mirror of https://github.com/zcash/halo2.git
2133 lines
441 KiB
HTML
2133 lines
441 KiB
HTML
<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Represents a univariate polynomial defined over a field and a particular basis."><meta name="keywords" content="rust, rustlang, rust-lang, Polynomial"><title>Polynomial in halo2_proofs::poly - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Regular-1f7d512b176f0f72.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Bold-124a1ca42af929b6.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-cd23e1e4557aa9dd.css" id="mainThemeStyle"><link rel="stylesheet" id="themeStyle" href="../../static.files/light-a21928845c7a186a.css"><link rel="stylesheet" disabled href="../../static.files/dark-90fc67ff25a42f29.css"><link rel="stylesheet" disabled href="../../static.files/ayu-d75a8bbde915b8ed.css"><script id="default-settings" ></script><script src="../../static.files/storage-d43fa987303ecbbb.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../static.files/main-458bffc4c06ccf37.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-13285aec31fa243e.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-2c020d218678b618.svg"><link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.10.0/dist/katex.min.css" integrity="sha384-9eLZqc9ds8eNjO3TmqPeYcDj8n+Qfa4nuSiGYa6DjLNcv9BtN69ZIulL9+8CqC9Y" crossorigin="anonymous">
|
||
<script src="https://cdn.jsdelivr.net/npm/katex@0.10.0/dist/katex.min.js" integrity="sha384-K3vbOmF2BtaVai+Qk37uypf7VrgBubhQreNQe9aGsz9lB63dIFiQVlJbr92dw2Lx" crossorigin="anonymous"></script>
|
||
<script src="https://cdn.jsdelivr.net/npm/katex@0.10.0/dist/contrib/auto-render.min.js" integrity="sha384-kmZOZB5ObwgQnS/DuDg6TScgOiWWBiVt0plIRkZCmE6rDZGrEOQeHM5PcHi+nyqe" crossorigin="anonymous"></script>
|
||
<script>
|
||
document.addEventListener("DOMContentLoaded", function() {
|
||
renderMathInElement(document.body, {
|
||
delimiters: [
|
||
{left: "$$", right: "$$", display: true},
|
||
{left: "\\(", right: "\\)", display: false},
|
||
{left: "$", right: "$", display: false},
|
||
{left: "\\[", right: "\\]", display: true}
|
||
]
|
||
});
|
||
});
|
||
</script>
|
||
</head><body class="rustdoc struct"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">☰</button><a class="sidebar-logo" href="../../halo2_proofs/index.html"><div class="logo-container"><img class="rust-logo" src="../../static.files/rust-logo-151179464ae7ed46.svg" alt="logo"></div></a><h2></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../../halo2_proofs/index.html"><div class="logo-container"><img class="rust-logo" src="../../static.files/rust-logo-151179464ae7ed46.svg" alt="logo"></div></a><h2 class="location"><a href="#">Polynomial</a></h2><div class="sidebar-elems"><section><h3><a href="#implementations">Methods</a></h3><ul class="block"><li><a href="#method.iter">iter</a></li><li><a href="#method.iter_mut">iter_mut</a></li><li><a href="#method.num_coeffs">num_coeffs</a></li><li><a href="#method.rotate">rotate</a></li></ul><h3><a href="#deref-methods-%5BF%5D">Methods from Deref<Target=[F]></a></h3><ul class="block"><li><a href="#method.align_to">align_to</a></li><li><a href="#method.align_to_mut">align_to_mut</a></li><li><a href="#method.array_chunks">array_chunks</a></li><li><a href="#method.array_chunks_mut">array_chunks_mut</a></li><li><a href="#method.array_windows">array_windows</a></li><li><a href="#method.as_chunks">as_chunks</a></li><li><a href="#method.as_chunks_mut">as_chunks_mut</a></li><li><a href="#method.as_chunks_unchecked">as_chunks_unchecked</a></li><li><a href="#method.as_chunks_unchecked_mut">as_chunks_unchecked_mut</a></li><li><a href="#method.as_mut_ptr">as_mut_ptr</a></li><li><a href="#method.as_mut_ptr_range">as_mut_ptr_range</a></li><li><a href="#method.as_ptr">as_ptr</a></li><li><a href="#method.as_ptr_range">as_ptr_range</a></li><li><a href="#method.as_rchunks">as_rchunks</a></li><li><a href="#method.as_rchunks_mut">as_rchunks_mut</a></li><li><a href="#method.as_simd">as_simd</a></li><li><a href="#method.as_simd_mut">as_simd_mut</a></li><li><a href="#method.binary_search">binary_search</a></li><li><a href="#method.binary_search_by">binary_search_by</a></li><li><a href="#method.binary_search_by_key">binary_search_by_key</a></li><li><a href="#method.chunks">chunks</a></li><li><a href="#method.chunks_exact">chunks_exact</a></li><li><a href="#method.chunks_exact_mut">chunks_exact_mut</a></li><li><a href="#method.chunks_mut">chunks_mut</a></li><li><a href="#method.clone_from_slice">clone_from_slice</a></li><li><a href="#method.concat">concat</a></li><li><a href="#method.connect">connect</a></li><li><a href="#method.contains">contains</a></li><li><a href="#method.copy_from_slice">copy_from_slice</a></li><li><a href="#method.copy_within">copy_within</a></li><li><a href="#method.ends_with">ends_with</a></li><li><a href="#method.eq_ignore_ascii_case">eq_ignore_ascii_case</a></li><li><a href="#method.escape_ascii">escape_ascii</a></li><li><a href="#method.fill">fill</a></li><li><a href="#method.fill_with">fill_with</a></li><li><a href="#method.first">first</a></li><li><a href="#method.first_mut">first_mut</a></li><li><a href="#method.flatten">flatten</a></li><li><a href="#method.flatten_mut">flatten_mut</a></li><li><a href="#method.get">get</a></li><li><a href="#method.get_many_mut">get_many_mut</a></li><li><a href="#method.get_many_unchecked_mut">get_many_unchecked_mut</a></li><li><a href="#method.get_mut">get_mut</a></li><li><a href="#method.get_unchecked">get_unchecked</a></li><li><a href="#method.get_unchecked_mut">get_unchecked_mut</a></li><li><a href="#method.group_by">group_by</a></li><li><a href="#method.group_by_mut">group_by_mut</a></li><li><a href="#method.is_ascii">is_ascii</a></li><li><a href="#method.is_empty">is_empty</a></li><li><a href="#method.is_sorted">is_sorted</a></li><li><a href="#method.is_sorted_by">is_sorted_by</a></li><li><a href="#method.is_sorted_by_key">is_sorted_by_key</a></li><li><a href="#method.iter-1">iter</a></li><li><a href="#method.iter_mut-1">iter_mut</a></li><li><a href="#method.join">join</a></li><li><a href="#method.last">last</a></li><li><a href="#method.last_mut">last_mut</a></li><li><a href="#method.len">len</a></li><li><a href="#method.make_ascii_lowercase">make_ascii_lowercase</a></li><li><a href="#method.make_ascii_uppercase">make_ascii_uppercase</a></li><li><a href="#method.partition_dedup">partition_dedup</a></li><li><a href="#method.partition_dedup_by">partition_dedup_by</a></li><li><a href="#method.partition_dedup_by_key">partition_dedup_by_key</a></li><li><a href="#method.partition_point">partition_point</a></li><li><a href="#method.rchunks">rchunks</a></li><li><a href="#method.rchunks_exact">rchunks_exact</a></li><li><a href="#method.rchunks_exact_mut">rchunks_exact_mut</a></li><li><a href="#method.rchunks_mut">rchunks_mut</a></li><li><a href="#method.repeat">repeat</a></li><li><a href="#method.reverse">reverse</a></li><li><a href="#method.rotate_left">rotate_left</a></li><li><a href="#method.rotate_right">rotate_right</a></li><li><a href="#method.rsplit">rsplit</a></li><li><a href="#method.rsplit_array_mut">rsplit_array_mut</a></li><li><a href="#method.rsplit_array_ref">rsplit_array_ref</a></li><li><a href="#method.rsplit_mut">rsplit_mut</a></li><li><a href="#method.rsplitn">rsplitn</a></li><li><a href="#method.rsplitn_mut">rsplitn_mut</a></li><li><a href="#method.select_nth_unstable">select_nth_unstable</a></li><li><a href="#method.select_nth_unstable_by">select_nth_unstable_by</a></li><li><a href="#method.select_nth_unstable_by_key">select_nth_unstable_by_key</a></li><li><a href="#method.sort">sort</a></li><li><a href="#method.sort_by">sort_by</a></li><li><a href="#method.sort_by_cached_key">sort_by_cached_key</a></li><li><a href="#method.sort_by_key">sort_by_key</a></li><li><a href="#method.sort_floats">sort_floats</a></li><li><a href="#method.sort_floats-1">sort_floats</a></li><li><a href="#method.sort_unstable">sort_unstable</a></li><li><a href="#method.sort_unstable_by">sort_unstable_by</a></li><li><a href="#method.sort_unstable_by_key">sort_unstable_by_key</a></li><li><a href="#method.split">split</a></li><li><a href="#method.split_array_mut">split_array_mut</a></li><li><a href="#method.split_array_ref">split_array_ref</a></li><li><a href="#method.split_at">split_at</a></li><li><a href="#method.split_at_mut">split_at_mut</a></li><li><a href="#method.split_at_mut_unchecked">split_at_mut_unchecked</a></li><li><a href="#method.split_at_unchecked">split_at_unchecked</a></li><li><a href="#method.split_first">split_first</a></li><li><a href="#method.split_first_mut">split_first_mut</a></li><li><a href="#method.split_inclusive">split_inclusive</a></li><li><a href="#method.split_inclusive_mut">split_inclusive_mut</a></li><li><a href="#method.split_last">split_last</a></li><li><a href="#method.split_last_mut">split_last_mut</a></li><li><a href="#method.split_mut">split_mut</a></li><li><a href="#method.splitn">splitn</a></li><li><a href="#method.splitn_mut">splitn_mut</a></li><li><a href="#method.starts_with">starts_with</a></li><li><a href="#method.strip_prefix">strip_prefix</a></li><li><a href="#method.strip_suffix">strip_suffix</a></li><li><a href="#method.swap">swap</a></li><li><a href="#method.swap_unchecked">swap_unchecked</a></li><li><a href="#method.swap_with_slice">swap_with_slice</a></li><li><a href="#method.take">take</a></li><li><a href="#method.take_first">take_first</a></li><li><a href="#method.take_first_mut">take_first_mut</a></li><li><a href="#method.take_last">take_last</a></li><li><a href="#method.take_last_mut">take_last_mut</a></li><li><a href="#method.take_mut">take_mut</a></li><li><a href="#method.to_ascii_lowercase">to_ascii_lowercase</a></li><li><a href="#method.to_ascii_uppercase">to_ascii_uppercase</a></li><li><a href="#method.to_vec">to_vec</a></li><li><a href="#method.to_vec_in">to_vec_in</a></li><li><a href="#method.trim_ascii">trim_ascii</a></li><li><a href="#method.trim_ascii_end">trim_ascii_end</a></li><li><a href="#method.trim_ascii_start">trim_ascii_start</a></li><li><a href="#method.windows">windows</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block"><li><a href="#impl-Add%3C%26%27a%20Polynomial%3CF%2C%20B%3E%3E-for-Polynomial%3CF%2C%20B%3E">Add<&'a Polynomial<F, B>></a></li><li><a href="#impl-Clone-for-Polynomial%3CF%2C%20B%3E">Clone</a></li><li><a href="#impl-Debug-for-Polynomial%3CF%2C%20B%3E">Debug</a></li><li><a href="#impl-Deref-for-Polynomial%3CF%2C%20B%3E">Deref</a></li><li><a href="#impl-DerefMut-for-Polynomial%3CF%2C%20B%3E">DerefMut</a></li><li><a href="#impl-Index%3CRangeFrom%3Cusize%3E%3E-for-Polynomial%3CF%2C%20B%3E">Index<RangeFrom<usize>></a></li><li><a href="#impl-Index%3CRangeFull%3E-for-Polynomial%3CF%2C%20B%3E">Index<RangeFull></a></li><li><a href="#impl-Index%3Cusize%3E-for-Polynomial%3CF%2C%20B%3E">Index<usize></a></li><li><a href="#impl-IndexMut%3CRangeFrom%3Cusize%3E%3E-for-Polynomial%3CF%2C%20B%3E">IndexMut<RangeFrom<usize>></a></li><li><a href="#impl-IndexMut%3CRangeFull%3E-for-Polynomial%3CF%2C%20B%3E">IndexMut<RangeFull></a></li><li><a href="#impl-IndexMut%3Cusize%3E-for-Polynomial%3CF%2C%20B%3E">IndexMut<usize></a></li><li><a href="#impl-Mul%3CF%3E-for-Polynomial%3CF%2C%20B%3E">Mul<F></a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block"><li><a href="#impl-RefUnwindSafe-for-Polynomial%3CF%2C%20B%3E">RefUnwindSafe</a></li><li><a href="#impl-Send-for-Polynomial%3CF%2C%20B%3E">Send</a></li><li><a href="#impl-Sync-for-Polynomial%3CF%2C%20B%3E">Sync</a></li><li><a href="#impl-Unpin-for-Polynomial%3CF%2C%20B%3E">Unpin</a></li><li><a href="#impl-UnwindSafe-for-Polynomial%3CF%2C%20B%3E">UnwindSafe</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block"><li><a href="#impl-Any-for-Polynomial%3CF%2C%20B%3E">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-Polynomial%3CF%2C%20B%3E">Borrow<T></a></li><li><a href="#impl-BorrowMut%3CT%3E-for-Polynomial%3CF%2C%20B%3E">BorrowMut<T></a></li><li><a href="#impl-Conv-for-Polynomial%3CF%2C%20B%3E">Conv</a></li><li><a href="#impl-FmtForward-for-Polynomial%3CF%2C%20B%3E">FmtForward</a></li><li><a href="#impl-From%3CT%3E-for-Polynomial%3CF%2C%20B%3E">From<T></a></li><li><a href="#impl-Instrument-for-Polynomial%3CF%2C%20B%3E">Instrument</a></li><li><a href="#impl-Into%3CU%3E-for-Polynomial%3CF%2C%20B%3E">Into<U></a></li><li><a href="#impl-Pipe-for-Polynomial%3CF%2C%20B%3E">Pipe</a></li><li><a href="#impl-Pointable-for-Polynomial%3CF%2C%20B%3E">Pointable</a></li><li><a href="#impl-Tap-for-Polynomial%3CF%2C%20B%3E">Tap</a></li><li><a href="#impl-ToOwned-for-Polynomial%3CF%2C%20B%3E">ToOwned</a></li><li><a href="#impl-TryConv-for-Polynomial%3CF%2C%20B%3E">TryConv</a></li><li><a href="#impl-TryFrom%3CU%3E-for-Polynomial%3CF%2C%20B%3E">TryFrom<U></a></li><li><a href="#impl-TryInto%3CU%3E-for-Polynomial%3CF%2C%20B%3E">TryInto<U></a></li><li><a href="#impl-VZip%3CV%3E-for-Polynomial%3CF%2C%20B%3E">VZip<V></a></li><li><a href="#impl-WithSubscriber-for-Polynomial%3CF%2C%20B%3E">WithSubscriber</a></li></ul></section><h2><a href="index.html">In halo2_proofs::poly</a></h2></div></nav><main><div class="width-limiter"><nav class="sub"><form class="search-form"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../static.files/wheel-5ec35bf9ca753509.svg"></a></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn">Struct <a href="../index.html">halo2_proofs</a>::<wbr><a href="index.html">poly</a>::<wbr><a class="struct" href="#">Polynomial</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../../static.files/clipboard-7571035ce49a181d.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="srclink" href="../../src/halo2_proofs/poly.rs.html#54-57">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>−</span>]</button></span></div><div class="item-decl"><pre class="rust struct"><code>pub struct Polynomial<F, B> { /* private fields */ }</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Represents a univariate polynomial defined over a field and a particular
|
||
basis.</p>
|
||
</div></details><h2 id="implementations" class="small-section-header">Implementations<a href="#implementations" class="anchor"></a></h2><div id="implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#115-133">source</a><a href="#impl-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<F, B> <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.iter" class="method has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#118-120">source</a><h4 class="code-header">pub fn <a href="#method.iter" class="fnname">iter</a>(&self) -> impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a><Item = <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>F></h4></section></summary><div class="docblock"><p>Iterate over the values, which are either in coefficient or evaluation
|
||
form depending on the basis <code>B</code>.</p>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.iter_mut" class="method has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#124-126">source</a><h4 class="code-header">pub fn <a href="#method.iter_mut" class="fnname">iter_mut</a>(&mut self) -> impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a><Item = <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>F></h4></section></summary><div class="docblock"><p>Iterate over the values mutably, which are either in coefficient or
|
||
evaluation form depending on the basis <code>B</code>.</p>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.num_coeffs" class="method has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#130-132">source</a><h4 class="code-header">pub fn <a href="#method.num_coeffs" class="fnname">num_coeffs</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></h4></section></summary><div class="docblock"><p>Gets the size of this polynomial in terms of the number of
|
||
coefficients used to describe it.</p>
|
||
</div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Polynomial%3CF%2C%20LagrangeCoeff%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#198-236">source</a><a href="#impl-Polynomial%3CF%2C%20LagrangeCoeff%3E" class="anchor"></a><h3 class="code-header">impl<F: <a class="trait" href="../arithmetic/trait.Field.html" title="trait halo2_proofs::arithmetic::Field">Field</a>> <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, <a class="struct" href="struct.LagrangeCoeff.html" title="struct halo2_proofs::poly::LagrangeCoeff">LagrangeCoeff</a>></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.rotate" class="method has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#200-211">source</a><h4 class="code-header">pub fn <a href="#method.rotate" class="fnname">rotate</a>(&self, rotation: <a class="struct" href="struct.Rotation.html" title="struct halo2_proofs::poly::Rotation">Rotation</a>) -> <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, <a class="struct" href="struct.LagrangeCoeff.html" title="struct halo2_proofs::poly::LagrangeCoeff">LagrangeCoeff</a>></h4></section></summary><div class="docblock"><p>Rotates the values in a Lagrange basis polynomial by <code>Rotation</code></p>
|
||
</div></details></div></details></div><h2 id="deref-methods-%5BF%5D" class="small-section-header"><span>Methods from <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html" title="trait core::ops::deref::Deref">Deref</a><Target = <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[F]</a>></span><a href="#deref-methods-%5BF%5D" class="anchor"></a></h2><div id="deref-methods-%5BF%5D-1"><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.flatten" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#4200">source</a><h4 class="code-header">pub fn <a href="#method.flatten" class="fnname">flatten</a>(&self) -> &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a> <a href="#" class="notable-traits" data-ty="&[T]">ⓘ</a></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_flatten</code>)</span></div></span></summary><div class="docblock"><p>Takes a <code>&[[T; N]]</code>, and flattens it to a <code>&[T]</code>.</p>
|
||
<h5 id="panics"><a href="#panics">Panics</a></h5>
|
||
<p>This panics if the length of the resulting slice would overflow a <code>usize</code>.</p>
|
||
<p>This is only possible when flattening a slice of arrays of zero-sized
|
||
types, and thus tends to be irrelevant in practice. If
|
||
<code>size_of::<T>() > 0</code>, this will never panic.</p>
|
||
<h5 id="examples"><a href="#examples">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_flatten)]
|
||
|
||
</span><span class="macro">assert_eq!</span>([[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>], [<span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]].flatten(), <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);
|
||
|
||
<span class="macro">assert_eq!</span>(
|
||
[[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>], [<span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]].flatten(),
|
||
[[<span class="number">1</span>, <span class="number">2</span>], [<span class="number">3</span>, <span class="number">4</span>], [<span class="number">5</span>, <span class="number">6</span>]].flatten(),
|
||
);
|
||
|
||
<span class="kw">let </span>slice_of_empty_arrays: <span class="kw-2">&</span>[[i32; <span class="number">0</span>]] = <span class="kw-2">&</span>[[], [], [], [], []];
|
||
<span class="macro">assert!</span>(slice_of_empty_arrays.flatten().is_empty());
|
||
|
||
<span class="kw">let </span>empty_slice_of_arrays: <span class="kw-2">&</span>[[u32; <span class="number">10</span>]] = <span class="kw-2">&</span>[];
|
||
<span class="macro">assert!</span>(empty_slice_of_arrays.flatten().is_empty());</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.flatten_mut" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#4238">source</a><h4 class="code-header">pub fn <a href="#method.flatten_mut" class="fnname">flatten_mut</a>(&mut self) -> &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a> <a href="#" class="notable-traits" data-ty="&mut [T]">ⓘ</a></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_flatten</code>)</span></div></span></summary><div class="docblock"><p>Takes a <code>&mut [[T; N]]</code>, and flattens it to a <code>&mut [T]</code>.</p>
|
||
<h5 id="panics-1"><a href="#panics-1">Panics</a></h5>
|
||
<p>This panics if the length of the resulting slice would overflow a <code>usize</code>.</p>
|
||
<p>This is only possible when flattening a slice of arrays of zero-sized
|
||
types, and thus tends to be irrelevant in practice. If
|
||
<code>size_of::<T>() > 0</code>, this will never panic.</p>
|
||
<h5 id="examples-1"><a href="#examples-1">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_flatten)]
|
||
|
||
</span><span class="kw">fn </span>add_5_to_all(slice: <span class="kw-2">&mut </span>[i32]) {
|
||
<span class="kw">for </span>i <span class="kw">in </span>slice {
|
||
<span class="kw-2">*</span>i += <span class="number">5</span>;
|
||
}
|
||
}
|
||
|
||
<span class="kw">let </span><span class="kw-2">mut </span>array = [[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>], [<span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>], [<span class="number">7</span>, <span class="number">8</span>, <span class="number">9</span>]];
|
||
add_5_to_all(array.flatten_mut());
|
||
<span class="macro">assert_eq!</span>(array, [[<span class="number">6</span>, <span class="number">7</span>, <span class="number">8</span>], [<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>], [<span class="number">12</span>, <span class="number">13</span>, <span class="number">14</span>]]);</code></pre></div>
|
||
</div></details></div><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.is_ascii" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.23.0">1.23.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/ascii.rs.html#15">source</a></span><h4 class="code-header">pub fn <a href="#method.is_ascii" class="fnname">is_ascii</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Checks if all bytes in this slice are within the ASCII range.</p>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.eq_ignore_ascii_case" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.23.0">1.23.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/ascii.rs.html#26">source</a></span><h4 class="code-header">pub fn <a href="#method.eq_ignore_ascii_case" class="fnname">eq_ignore_ascii_case</a>(&self, other: &[<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>]) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Checks that two slices are an ASCII case-insensitive match.</p>
|
||
<p>Same as <code>to_ascii_lowercase(a) == to_ascii_lowercase(b)</code>,
|
||
but without allocating and copying temporaries.</p>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.make_ascii_uppercase" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.23.0">1.23.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/ascii.rs.html#41">source</a></span><h4 class="code-header">pub fn <a href="#method.make_ascii_uppercase" class="fnname">make_ascii_uppercase</a>(&mut self)</h4></section></summary><div class="docblock"><p>Converts this slice to its ASCII upper case equivalent in-place.</p>
|
||
<p>ASCII letters ‘a’ to ‘z’ are mapped to ‘A’ to ‘Z’,
|
||
but non-ASCII letters are unchanged.</p>
|
||
<p>To return a new uppercased value without modifying the existing one, use
|
||
<a href="#method.to_ascii_uppercase"><code>to_ascii_uppercase</code></a>.</p>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.make_ascii_lowercase" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.23.0">1.23.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/ascii.rs.html#58">source</a></span><h4 class="code-header">pub fn <a href="#method.make_ascii_lowercase" class="fnname">make_ascii_lowercase</a>(&mut self)</h4></section></summary><div class="docblock"><p>Converts this slice to its ASCII lower case equivalent in-place.</p>
|
||
<p>ASCII letters ‘A’ to ‘Z’ are mapped to ‘a’ to ‘z’,
|
||
but non-ASCII letters are unchanged.</p>
|
||
<p>To return a new lowercased value without modifying the existing one, use
|
||
<a href="#method.to_ascii_lowercase"><code>to_ascii_lowercase</code></a>.</p>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.escape_ascii" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.60.0">1.60.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/ascii.rs.html#78">source</a></span><h4 class="code-header">pub fn <a href="#method.escape_ascii" class="fnname">escape_ascii</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/ascii/struct.EscapeAscii.html" title="struct core::slice::ascii::EscapeAscii">EscapeAscii</a><'_></h4></section></summary><div class="docblock"><p>Returns an iterator that produces an escaped version of this slice,
|
||
treating it as an ASCII string.</p>
|
||
<h5 id="examples-2"><a href="#examples-2">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code>
|
||
<span class="kw">let </span>s = <span class="string">b"0\t\r\n'\"\\\x9d"</span>;
|
||
<span class="kw">let </span>escaped = s.escape_ascii().to_string();
|
||
<span class="macro">assert_eq!</span>(escaped, <span class="string">"0\\t\\r\\n\\'\\\"\\\\\\x9d"</span>);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.trim_ascii_start" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/ascii.rs.html#97">source</a><h4 class="code-header">pub fn <a href="#method.trim_ascii_start" class="fnname">trim_ascii_start</a>(&self) -> &[<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>] <a href="#" class="notable-traits" data-ty="&[u8]">ⓘ</a></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>byte_slice_trim_ascii</code>)</span></div></span></summary><div class="docblock"><p>Returns a byte slice with leading ASCII whitespace bytes removed.</p>
|
||
<p>‘Whitespace’ refers to the definition used by
|
||
<code>u8::is_ascii_whitespace</code>.</p>
|
||
<h5 id="examples-3"><a href="#examples-3">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(byte_slice_trim_ascii)]
|
||
|
||
</span><span class="macro">assert_eq!</span>(<span class="string">b" \t hello world\n"</span>.trim_ascii_start(), <span class="string">b"hello world\n"</span>);
|
||
<span class="macro">assert_eq!</span>(<span class="string">b" "</span>.trim_ascii_start(), <span class="string">b""</span>);
|
||
<span class="macro">assert_eq!</span>(<span class="string">b""</span>.trim_ascii_start(), <span class="string">b""</span>);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.trim_ascii_end" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/ascii.rs.html#126">source</a><h4 class="code-header">pub fn <a href="#method.trim_ascii_end" class="fnname">trim_ascii_end</a>(&self) -> &[<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>] <a href="#" class="notable-traits" data-ty="&[u8]">ⓘ</a></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>byte_slice_trim_ascii</code>)</span></div></span></summary><div class="docblock"><p>Returns a byte slice with trailing ASCII whitespace bytes removed.</p>
|
||
<p>‘Whitespace’ refers to the definition used by
|
||
<code>u8::is_ascii_whitespace</code>.</p>
|
||
<h5 id="examples-4"><a href="#examples-4">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(byte_slice_trim_ascii)]
|
||
|
||
</span><span class="macro">assert_eq!</span>(<span class="string">b"\r hello world\n "</span>.trim_ascii_end(), <span class="string">b"\r hello world"</span>);
|
||
<span class="macro">assert_eq!</span>(<span class="string">b" "</span>.trim_ascii_end(), <span class="string">b""</span>);
|
||
<span class="macro">assert_eq!</span>(<span class="string">b""</span>.trim_ascii_end(), <span class="string">b""</span>);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.trim_ascii" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/ascii.rs.html#156">source</a><h4 class="code-header">pub fn <a href="#method.trim_ascii" class="fnname">trim_ascii</a>(&self) -> &[<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>] <a href="#" class="notable-traits" data-ty="&[u8]">ⓘ</a></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>byte_slice_trim_ascii</code>)</span></div></span></summary><div class="docblock"><p>Returns a byte slice with leading and trailing ASCII whitespace bytes
|
||
removed.</p>
|
||
<p>‘Whitespace’ refers to the definition used by
|
||
<code>u8::is_ascii_whitespace</code>.</p>
|
||
<h5 id="examples-5"><a href="#examples-5">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(byte_slice_trim_ascii)]
|
||
|
||
</span><span class="macro">assert_eq!</span>(<span class="string">b"\r hello world\n "</span>.trim_ascii(), <span class="string">b"hello world"</span>);
|
||
<span class="macro">assert_eq!</span>(<span class="string">b" "</span>.trim_ascii(), <span class="string">b""</span>);
|
||
<span class="macro">assert_eq!</span>(<span class="string">b""</span>.trim_ascii(), <span class="string">b""</span>);</code></pre></div>
|
||
</div></details></div><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.sort_floats" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#4304">source</a><h4 class="code-header">pub fn <a href="#method.sort_floats" class="fnname">sort_floats</a>(&mut self)</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>sort_floats</code>)</span></div></span></summary><div class="docblock"><p>Sorts the slice of floats.</p>
|
||
<p>This sort is in-place (i.e. does not allocate), <em>O</em>(<em>n</em> * log(<em>n</em>)) worst-case, and uses
|
||
the ordering defined by <a href="https://doc.rust-lang.org/nightly/std/primitive.f64.html#method.total_cmp" title="f64::total_cmp"><code>f64::total_cmp</code></a>.</p>
|
||
<h5 id="current-implementation"><a href="#current-implementation">Current implementation</a></h5>
|
||
<p>This uses the same sorting algorithm as <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.sort_unstable_by"><code>sort_unstable_by</code></a>.</p>
|
||
<h5 id="examples-6"><a href="#examples-6">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(sort_floats)]
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="number">2.6</span>, -<span class="number">5e-8</span>, f64::NAN, <span class="number">8.29</span>, f64::INFINITY, -<span class="number">1.0</span>, <span class="number">0.0</span>, -f64::INFINITY, -<span class="number">0.0</span>];
|
||
|
||
v.sort_floats();
|
||
<span class="kw">let </span>sorted = [-f64::INFINITY, -<span class="number">1.0</span>, -<span class="number">5e-8</span>, -<span class="number">0.0</span>, <span class="number">0.0</span>, <span class="number">2.6</span>, <span class="number">8.29</span>, f64::INFINITY, f64::NAN];
|
||
<span class="macro">assert_eq!</span>(<span class="kw-2">&</span>v[..<span class="number">8</span>], <span class="kw-2">&</span>sorted[..<span class="number">8</span>]);
|
||
<span class="macro">assert!</span>(v[<span class="number">8</span>].is_nan());</code></pre></div>
|
||
</div></details></div><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.len" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#130">source</a></span><h4 class="code-header">pub fn <a href="#method.len" class="fnname">len</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></h4></section></summary><div class="docblock"><p>Returns the number of elements in the slice.</p>
|
||
<h5 id="examples-7"><a href="#examples-7">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>a = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>];
|
||
<span class="macro">assert_eq!</span>(a.len(), <span class="number">3</span>);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.is_empty" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#146">source</a></span><h4 class="code-header">pub fn <a href="#method.is_empty" class="fnname">is_empty</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns <code>true</code> if the slice has a length of 0.</p>
|
||
<h5 id="examples-8"><a href="#examples-8">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>a = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>];
|
||
<span class="macro">assert!</span>(!a.is_empty());</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.first" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#165">source</a></span><h4 class="code-header">pub fn <a href="#method.first" class="fnname">first</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T></h4></section></summary><div class="docblock"><p>Returns the first element of the slice, or <code>None</code> if it is empty.</p>
|
||
<h5 id="examples-9"><a href="#examples-9">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>];
|
||
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">10</span>), v.first());
|
||
|
||
<span class="kw">let </span>w: <span class="kw-2">&</span>[i32] = <span class="kw-2">&</span>[];
|
||
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, w.first());</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.first_mut" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#185">source</a></span><h4 class="code-header">pub fn <a href="#method.first_mut" class="fnname">first_mut</a>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T></h4></section></summary><div class="docblock"><p>Returns a mutable pointer to the first element of the slice, or <code>None</code> if it is empty.</p>
|
||
<h5 id="examples-10"><a href="#examples-10">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
|
||
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>(first) = x.first_mut() {
|
||
<span class="kw-2">*</span>first = <span class="number">5</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">5</span>, <span class="number">1</span>, <span class="number">2</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.split_first" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.5.0">1.5.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#205">source</a></span><h4 class="code-header">pub fn <a href="#method.split_first" class="fnname">split_first</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T, &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)></h4></section></summary><div class="docblock"><p>Returns the first and all the rest of the elements of the slice, or <code>None</code> if it is empty.</p>
|
||
<h5 id="examples-11"><a href="#examples-11">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
|
||
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>((first, elements)) = x.split_first() {
|
||
<span class="macro">assert_eq!</span>(first, <span class="kw-2">&</span><span class="number">0</span>);
|
||
<span class="macro">assert_eq!</span>(elements, <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">2</span>]);
|
||
}</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.split_first_mut" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.5.0">1.5.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#227">source</a></span><h4 class="code-header">pub fn <a href="#method.split_first_mut" class="fnname">split_first_mut</a>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T, &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)></h4></section></summary><div class="docblock"><p>Returns the first and all the rest of the elements of the slice, or <code>None</code> if it is empty.</p>
|
||
<h5 id="examples-12"><a href="#examples-12">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
|
||
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>((first, elements)) = x.split_first_mut() {
|
||
<span class="kw-2">*</span>first = <span class="number">3</span>;
|
||
elements[<span class="number">0</span>] = <span class="number">4</span>;
|
||
elements[<span class="number">1</span>] = <span class="number">5</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.split_last" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.5.0">1.5.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#247">source</a></span><h4 class="code-header">pub fn <a href="#method.split_last" class="fnname">split_last</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T, &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)></h4></section></summary><div class="docblock"><p>Returns the last and all the rest of the elements of the slice, or <code>None</code> if it is empty.</p>
|
||
<h5 id="examples-13"><a href="#examples-13">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
|
||
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>((last, elements)) = x.split_last() {
|
||
<span class="macro">assert_eq!</span>(last, <span class="kw-2">&</span><span class="number">2</span>);
|
||
<span class="macro">assert_eq!</span>(elements, <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">1</span>]);
|
||
}</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.split_last_mut" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.5.0">1.5.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#269">source</a></span><h4 class="code-header">pub fn <a href="#method.split_last_mut" class="fnname">split_last_mut</a>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T, &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)></h4></section></summary><div class="docblock"><p>Returns the last and all the rest of the elements of the slice, or <code>None</code> if it is empty.</p>
|
||
<h5 id="examples-14"><a href="#examples-14">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
|
||
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>((last, elements)) = x.split_last_mut() {
|
||
<span class="kw-2">*</span>last = <span class="number">3</span>;
|
||
elements[<span class="number">0</span>] = <span class="number">4</span>;
|
||
elements[<span class="number">1</span>] = <span class="number">5</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">4</span>, <span class="number">5</span>, <span class="number">3</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.last" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#288">source</a></span><h4 class="code-header">pub fn <a href="#method.last" class="fnname">last</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T></h4></section></summary><div class="docblock"><p>Returns the last element of the slice, or <code>None</code> if it is empty.</p>
|
||
<h5 id="examples-15"><a href="#examples-15">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>];
|
||
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">30</span>), v.last());
|
||
|
||
<span class="kw">let </span>w: <span class="kw-2">&</span>[i32] = <span class="kw-2">&</span>[];
|
||
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, w.last());</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.last_mut" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#308">source</a></span><h4 class="code-header">pub fn <a href="#method.last_mut" class="fnname">last_mut</a>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T></h4></section></summary><div class="docblock"><p>Returns a mutable pointer to the last item in the slice.</p>
|
||
<h5 id="examples-16"><a href="#examples-16">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
|
||
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>(last) = x.last_mut() {
|
||
<span class="kw-2">*</span>last = <span class="number">10</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">10</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.get" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#333-335">source</a></span><h4 class="code-header">pub fn <a href="#method.get" class="fnname">get</a><I>(&self, index: I) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&<I as <a class="trait" href="https://doc.rust-lang.org/nightly/core/slice/index/trait.SliceIndex.html" title="trait core::slice::index::SliceIndex">SliceIndex</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/slice/index/trait.SliceIndex.html#associatedtype.Output" title="type core::slice::index::SliceIndex::Output">Output</a>><span class="where fmt-newline">where<br> I: <a class="trait" href="https://doc.rust-lang.org/nightly/core/slice/index/trait.SliceIndex.html" title="trait core::slice::index::SliceIndex">SliceIndex</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>>,</span></h4></section></summary><div class="docblock"><p>Returns a reference to an element or subslice depending on the type of
|
||
index.</p>
|
||
<ul>
|
||
<li>If given a position, returns a reference to the element at that
|
||
position or <code>None</code> if out of bounds.</li>
|
||
<li>If given a range, returns the subslice corresponding to that range,
|
||
or <code>None</code> if out of bounds.</li>
|
||
</ul>
|
||
<h5 id="examples-17"><a href="#examples-17">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>];
|
||
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">40</span>), v.get(<span class="number">1</span>));
|
||
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">40</span>][..]), v.get(<span class="number">0</span>..<span class="number">2</span>));
|
||
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, v.get(<span class="number">3</span>));
|
||
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, v.get(<span class="number">0</span>..<span class="number">4</span>));</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.get_mut" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#359-361">source</a></span><h4 class="code-header">pub fn <a href="#method.get_mut" class="fnname">get_mut</a><I>(<br> &mut self,<br> index: I<br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&mut <I as <a class="trait" href="https://doc.rust-lang.org/nightly/core/slice/index/trait.SliceIndex.html" title="trait core::slice::index::SliceIndex">SliceIndex</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/slice/index/trait.SliceIndex.html#associatedtype.Output" title="type core::slice::index::SliceIndex::Output">Output</a>><span class="where fmt-newline">where<br> I: <a class="trait" href="https://doc.rust-lang.org/nightly/core/slice/index/trait.SliceIndex.html" title="trait core::slice::index::SliceIndex">SliceIndex</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>>,</span></h4></section></summary><div class="docblock"><p>Returns a mutable reference to an element or subslice depending on the
|
||
type of index (see <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.get"><code>get</code></a>) or <code>None</code> if the index is out of bounds.</p>
|
||
<h5 id="examples-18"><a href="#examples-18">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
|
||
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>(elem) = x.get_mut(<span class="number">1</span>) {
|
||
<span class="kw-2">*</span>elem = <span class="number">42</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">42</span>, <span class="number">2</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.get_unchecked" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#392-394">source</a></span><h4 class="code-header">pub unsafe fn <a href="#method.get_unchecked" class="fnname">get_unchecked</a><I>(<br> &self,<br> index: I<br>) -> &<I as <a class="trait" href="https://doc.rust-lang.org/nightly/core/slice/index/trait.SliceIndex.html" title="trait core::slice::index::SliceIndex">SliceIndex</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/slice/index/trait.SliceIndex.html#associatedtype.Output" title="type core::slice::index::SliceIndex::Output">Output</a><span class="where fmt-newline">where<br> I: <a class="trait" href="https://doc.rust-lang.org/nightly/core/slice/index/trait.SliceIndex.html" title="trait core::slice::index::SliceIndex">SliceIndex</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>>,</span></h4></section></summary><div class="docblock"><p>Returns a reference to an element or subslice, without doing bounds
|
||
checking.</p>
|
||
<p>For a safe alternative see <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.get"><code>get</code></a>.</p>
|
||
<h5 id="safety"><a href="#safety">Safety</a></h5>
|
||
<p>Calling this method with an out-of-bounds index is <em><a href="https://doc.rust-lang.org/reference/behavior-considered-undefined.html">undefined behavior</a></em>
|
||
even if the resulting reference is not used.</p>
|
||
<h5 id="examples-19"><a href="#examples-19">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">4</span>];
|
||
|
||
<span class="kw">unsafe </span>{
|
||
<span class="macro">assert_eq!</span>(x.get_unchecked(<span class="number">1</span>), <span class="kw-2">&</span><span class="number">2</span>);
|
||
}</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.get_unchecked_mut" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#430-432">source</a></span><h4 class="code-header">pub unsafe fn <a href="#method.get_unchecked_mut" class="fnname">get_unchecked_mut</a><I>(<br> &mut self,<br> index: I<br>) -> &mut <I as <a class="trait" href="https://doc.rust-lang.org/nightly/core/slice/index/trait.SliceIndex.html" title="trait core::slice::index::SliceIndex">SliceIndex</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/slice/index/trait.SliceIndex.html#associatedtype.Output" title="type core::slice::index::SliceIndex::Output">Output</a><span class="where fmt-newline">where<br> I: <a class="trait" href="https://doc.rust-lang.org/nightly/core/slice/index/trait.SliceIndex.html" title="trait core::slice::index::SliceIndex">SliceIndex</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>>,</span></h4></section></summary><div class="docblock"><p>Returns a mutable reference to an element or subslice, without doing
|
||
bounds checking.</p>
|
||
<p>For a safe alternative see <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.get_mut"><code>get_mut</code></a>.</p>
|
||
<h5 id="safety-1"><a href="#safety-1">Safety</a></h5>
|
||
<p>Calling this method with an out-of-bounds index is <em><a href="https://doc.rust-lang.org/reference/behavior-considered-undefined.html">undefined behavior</a></em>
|
||
even if the resulting reference is not used.</p>
|
||
<h5 id="examples-20"><a href="#examples-20">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">4</span>];
|
||
|
||
<span class="kw">unsafe </span>{
|
||
<span class="kw">let </span>elem = x.get_unchecked_mut(<span class="number">1</span>);
|
||
<span class="kw-2">*</span>elem = <span class="number">13</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">13</span>, <span class="number">4</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.as_ptr" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#470">source</a></span><h4 class="code-header">pub fn <a href="#method.as_ptr" class="fnname">as_ptr</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.pointer.html">*const T</a></h4></section></summary><div class="docblock"><p>Returns a raw pointer to the slice’s buffer.</p>
|
||
<p>The caller must ensure that the slice outlives the pointer this
|
||
function returns, or else it will end up pointing to garbage.</p>
|
||
<p>The caller must also ensure that the memory the pointer (non-transitively) points to
|
||
is never written to (except inside an <code>UnsafeCell</code>) using this pointer or any pointer
|
||
derived from it. If you need to mutate the contents of the slice, use <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.as_mut_ptr"><code>as_mut_ptr</code></a>.</p>
|
||
<p>Modifying the container referenced by this slice may cause its buffer
|
||
to be reallocated, which would also make any pointers to it invalid.</p>
|
||
<h5 id="examples-21"><a href="#examples-21">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">4</span>];
|
||
<span class="kw">let </span>x_ptr = x.as_ptr();
|
||
|
||
<span class="kw">unsafe </span>{
|
||
<span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..x.len() {
|
||
<span class="macro">assert_eq!</span>(x.get_unchecked(i), <span class="kw-2">&*</span>x_ptr.add(i));
|
||
}
|
||
}</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.as_mut_ptr" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#500">source</a></span><h4 class="code-header">pub fn <a href="#method.as_mut_ptr" class="fnname">as_mut_ptr</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.pointer.html">*mut T</a></h4></section></summary><div class="docblock"><p>Returns an unsafe mutable pointer to the slice’s buffer.</p>
|
||
<p>The caller must ensure that the slice outlives the pointer this
|
||
function returns, or else it will end up pointing to garbage.</p>
|
||
<p>Modifying the container referenced by this slice may cause its buffer
|
||
to be reallocated, which would also make any pointers to it invalid.</p>
|
||
<h5 id="examples-22"><a href="#examples-22">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">4</span>];
|
||
<span class="kw">let </span>x_ptr = x.as_mut_ptr();
|
||
|
||
<span class="kw">unsafe </span>{
|
||
<span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..x.len() {
|
||
<span class="kw-2">*</span>x_ptr.add(i) += <span class="number">2</span>;
|
||
}
|
||
}
|
||
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">3</span>, <span class="number">4</span>, <span class="number">6</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.as_ptr_range" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.48.0">1.48.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#536">source</a></span><h4 class="code-header">pub fn <a href="#method.as_ptr_range" class="fnname">as_ptr_range</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/ops/range/struct.Range.html" title="struct core::ops::range::Range">Range</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.pointer.html">*const T</a>></h4></section></summary><div class="docblock"><p>Returns the two raw pointers spanning the slice.</p>
|
||
<p>The returned range is half-open, which means that the end pointer
|
||
points <em>one past</em> the last element of the slice. This way, an empty
|
||
slice is represented by two equal pointers, and the difference between
|
||
the two pointers represents the size of the slice.</p>
|
||
<p>See <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.as_ptr"><code>as_ptr</code></a> for warnings on using these pointers. The end pointer
|
||
requires extra caution, as it does not point to a valid element in the
|
||
slice.</p>
|
||
<p>This function is useful for interacting with foreign interfaces which
|
||
use two pointers to refer to a range of elements in memory, as is
|
||
common in C++.</p>
|
||
<p>It can also be useful to check if a pointer to an element refers to an
|
||
element of this slice:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>a = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>];
|
||
<span class="kw">let </span>x = <span class="kw-2">&</span>a[<span class="number">1</span>] <span class="kw">as </span><span class="kw-2">*const </span><span class="kw">_</span>;
|
||
<span class="kw">let </span>y = <span class="kw-2">&</span><span class="number">5 </span><span class="kw">as </span><span class="kw-2">*const </span><span class="kw">_</span>;
|
||
|
||
<span class="macro">assert!</span>(a.as_ptr_range().contains(<span class="kw-2">&</span>x));
|
||
<span class="macro">assert!</span>(!a.as_ptr_range().contains(<span class="kw-2">&</span>y));</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.as_mut_ptr_range" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.48.0">1.48.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#580">source</a></span><h4 class="code-header">pub fn <a href="#method.as_mut_ptr_range" class="fnname">as_mut_ptr_range</a>(&mut self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/ops/range/struct.Range.html" title="struct core::ops::range::Range">Range</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.pointer.html">*mut T</a>></h4></section></summary><div class="docblock"><p>Returns the two unsafe mutable pointers spanning the slice.</p>
|
||
<p>The returned range is half-open, which means that the end pointer
|
||
points <em>one past</em> the last element of the slice. This way, an empty
|
||
slice is represented by two equal pointers, and the difference between
|
||
the two pointers represents the size of the slice.</p>
|
||
<p>See <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.as_mut_ptr"><code>as_mut_ptr</code></a> for warnings on using these pointers. The end
|
||
pointer requires extra caution, as it does not point to a valid element
|
||
in the slice.</p>
|
||
<p>This function is useful for interacting with foreign interfaces which
|
||
use two pointers to refer to a range of elements in memory, as is
|
||
common in C++.</p>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.swap" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#609">source</a></span><h4 class="code-header">pub fn <a href="#method.swap" class="fnname">swap</a>(&mut self, a: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, b: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>)</h4></section></summary><div class="docblock"><p>Swaps two elements in the slice.</p>
|
||
<h5 id="arguments"><a href="#arguments">Arguments</a></h5>
|
||
<ul>
|
||
<li>a - The index of the first element</li>
|
||
<li>b - The index of the second element</li>
|
||
</ul>
|
||
<h5 id="panics-2"><a href="#panics-2">Panics</a></h5>
|
||
<p>Panics if <code>a</code> or <code>b</code> are out of bounds.</p>
|
||
<h5 id="examples-23"><a href="#examples-23">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="string">"a"</span>, <span class="string">"b"</span>, <span class="string">"c"</span>, <span class="string">"d"</span>, <span class="string">"e"</span>];
|
||
v.swap(<span class="number">2</span>, <span class="number">4</span>);
|
||
<span class="macro">assert!</span>(v == [<span class="string">"a"</span>, <span class="string">"b"</span>, <span class="string">"e"</span>, <span class="string">"d"</span>, <span class="string">"c"</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.swap_unchecked" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#652">source</a><h4 class="code-header">pub unsafe fn <a href="#method.swap_unchecked" class="fnname">swap_unchecked</a>(&mut self, a: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, b: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>)</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_swap_unchecked</code>)</span></div></span></summary><div class="docblock"><p>Swaps two elements in the slice, without doing bounds checking.</p>
|
||
<p>For a safe alternative see <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.swap"><code>swap</code></a>.</p>
|
||
<h5 id="arguments-1"><a href="#arguments-1">Arguments</a></h5>
|
||
<ul>
|
||
<li>a - The index of the first element</li>
|
||
<li>b - The index of the second element</li>
|
||
</ul>
|
||
<h5 id="safety-2"><a href="#safety-2">Safety</a></h5>
|
||
<p>Calling this method with an out-of-bounds index is <em><a href="https://doc.rust-lang.org/reference/behavior-considered-undefined.html">undefined behavior</a></em>.
|
||
The caller has to ensure that <code>a < self.len()</code> and <code>b < self.len()</code>.</p>
|
||
<h5 id="examples-24"><a href="#examples-24">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_swap_unchecked)]
|
||
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="string">"a"</span>, <span class="string">"b"</span>, <span class="string">"c"</span>, <span class="string">"d"</span>];
|
||
<span class="comment">// SAFETY: we know that 1 and 3 are both indices of the slice
|
||
</span><span class="kw">unsafe </span>{ v.swap_unchecked(<span class="number">1</span>, <span class="number">3</span>) };
|
||
<span class="macro">assert!</span>(v == [<span class="string">"a"</span>, <span class="string">"d"</span>, <span class="string">"c"</span>, <span class="string">"b"</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.reverse" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#677">source</a></span><h4 class="code-header">pub fn <a href="#method.reverse" class="fnname">reverse</a>(&mut self)</h4></section></summary><div class="docblock"><p>Reverses the order of elements in the slice, in place.</p>
|
||
<h5 id="examples-25"><a href="#examples-25">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>];
|
||
v.reverse();
|
||
<span class="macro">assert!</span>(v == [<span class="number">3</span>, <span class="number">2</span>, <span class="number">1</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.iter-1" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#735">source</a></span><h4 class="code-header">pub fn <a href="#method.iter-1" class="fnname">iter</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.Iter.html" title="struct core::slice::iter::Iter">Iter</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over the slice.</p>
|
||
<p>The iterator yields all items from start to end.</p>
|
||
<h5 id="examples-26"><a href="#examples-26">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">4</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iterator = x.iter();
|
||
|
||
<span class="macro">assert_eq!</span>(iterator.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">1</span>));
|
||
<span class="macro">assert_eq!</span>(iterator.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">2</span>));
|
||
<span class="macro">assert_eq!</span>(iterator.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">4</span>));
|
||
<span class="macro">assert_eq!</span>(iterator.next(), <span class="prelude-val">None</span>);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.iter_mut-1" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#754">source</a></span><h4 class="code-header">pub fn <a href="#method.iter_mut-1" class="fnname">iter_mut</a>(&mut self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.IterMut.html" title="struct core::slice::iter::IterMut">IterMut</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator that allows modifying each value.</p>
|
||
<p>The iterator yields all items from start to end.</p>
|
||
<h5 id="examples-27"><a href="#examples-27">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">4</span>];
|
||
<span class="kw">for </span>elem <span class="kw">in </span>x.iter_mut() {
|
||
<span class="kw-2">*</span>elem += <span class="number">2</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">3</span>, <span class="number">4</span>, <span class="number">6</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.windows" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#786">source</a></span><h4 class="code-header">pub fn <a href="#method.windows" class="fnname">windows</a>(&self, size: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.Windows.html" title="struct core::slice::iter::Windows">Windows</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over all contiguous windows of length
|
||
<code>size</code>. The windows overlap. If the slice is shorter than
|
||
<code>size</code>, the iterator returns no values.</p>
|
||
<h5 id="panics-3"><a href="#panics-3">Panics</a></h5>
|
||
<p>Panics if <code>size</code> is 0.</p>
|
||
<h5 id="examples-28"><a href="#examples-28">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="string">'r'</span>, <span class="string">'u'</span>, <span class="string">'s'</span>, <span class="string">'t'</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.windows(<span class="number">2</span>);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'r'</span>, <span class="string">'u'</span>]);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'u'</span>, <span class="string">'s'</span>]);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'s'</span>, <span class="string">'t'</span>]);
|
||
<span class="macro">assert!</span>(iter.next().is_none());</code></pre></div>
|
||
<p>If the slice is shorter than <code>size</code>:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="string">'f'</span>, <span class="string">'o'</span>, <span class="string">'o'</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.windows(<span class="number">4</span>);
|
||
<span class="macro">assert!</span>(iter.next().is_none());</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.chunks" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#820">source</a></span><h4 class="code-header">pub fn <a href="#method.chunks" class="fnname">chunks</a>(&self, chunk_size: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.Chunks.html" title="struct core::slice::iter::Chunks">Chunks</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over <code>chunk_size</code> elements of the slice at a time, starting at the
|
||
beginning of the slice.</p>
|
||
<p>The chunks are slices and do not overlap. If <code>chunk_size</code> does not divide the length of the
|
||
slice, then the last chunk will not have length <code>chunk_size</code>.</p>
|
||
<p>See <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.chunks_exact"><code>chunks_exact</code></a> for a variant of this iterator that returns chunks of always exactly
|
||
<code>chunk_size</code> elements, and <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.rchunks"><code>rchunks</code></a> for the same iterator but starting at the end of the
|
||
slice.</p>
|
||
<h5 id="panics-4"><a href="#panics-4">Panics</a></h5>
|
||
<p>Panics if <code>chunk_size</code> is 0.</p>
|
||
<h5 id="examples-29"><a href="#examples-29">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.chunks(<span class="number">2</span>);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'l'</span>, <span class="string">'o'</span>]);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'r'</span>, <span class="string">'e'</span>]);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'m'</span>]);
|
||
<span class="macro">assert!</span>(iter.next().is_none());</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.chunks_mut" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#858">source</a></span><h4 class="code-header">pub fn <a href="#method.chunks_mut" class="fnname">chunks_mut</a>(&mut self, chunk_size: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.ChunksMut.html" title="struct core::slice::iter::ChunksMut">ChunksMut</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over <code>chunk_size</code> elements of the slice at a time, starting at the
|
||
beginning of the slice.</p>
|
||
<p>The chunks are mutable slices, and do not overlap. If <code>chunk_size</code> does not divide the
|
||
length of the slice, then the last chunk will not have length <code>chunk_size</code>.</p>
|
||
<p>See <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.chunks_exact_mut"><code>chunks_exact_mut</code></a> for a variant of this iterator that returns chunks of always
|
||
exactly <code>chunk_size</code> elements, and <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.rchunks_mut"><code>rchunks_mut</code></a> for the same iterator but starting at
|
||
the end of the slice.</p>
|
||
<h5 id="panics-5"><a href="#panics-5">Panics</a></h5>
|
||
<p>Panics if <code>chunk_size</code> is 0.</p>
|
||
<h5 id="examples-30"><a href="#examples-30">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>count = <span class="number">1</span>;
|
||
|
||
<span class="kw">for </span>chunk <span class="kw">in </span>v.chunks_mut(<span class="number">2</span>) {
|
||
<span class="kw">for </span>elem <span class="kw">in </span>chunk.iter_mut() {
|
||
<span class="kw-2">*</span>elem += count;
|
||
}
|
||
count += <span class="number">1</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(v, <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">3</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.chunks_exact" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.31.0">1.31.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#895">source</a></span><h4 class="code-header">pub fn <a href="#method.chunks_exact" class="fnname">chunks_exact</a>(&self, chunk_size: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.ChunksExact.html" title="struct core::slice::iter::ChunksExact">ChunksExact</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over <code>chunk_size</code> elements of the slice at a time, starting at the
|
||
beginning of the slice.</p>
|
||
<p>The chunks are slices and do not overlap. If <code>chunk_size</code> does not divide the length of the
|
||
slice, then the last up to <code>chunk_size-1</code> elements will be omitted and can be retrieved
|
||
from the <code>remainder</code> function of the iterator.</p>
|
||
<p>Due to each chunk having exactly <code>chunk_size</code> elements, the compiler can often optimize the
|
||
resulting code better than in the case of <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.chunks"><code>chunks</code></a>.</p>
|
||
<p>See <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.chunks"><code>chunks</code></a> for a variant of this iterator that also returns the remainder as a smaller
|
||
chunk, and <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.rchunks_exact"><code>rchunks_exact</code></a> for the same iterator but starting at the end of the slice.</p>
|
||
<h5 id="panics-6"><a href="#panics-6">Panics</a></h5>
|
||
<p>Panics if <code>chunk_size</code> is 0.</p>
|
||
<h5 id="examples-31"><a href="#examples-31">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.chunks_exact(<span class="number">2</span>);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'l'</span>, <span class="string">'o'</span>]);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'r'</span>, <span class="string">'e'</span>]);
|
||
<span class="macro">assert!</span>(iter.next().is_none());
|
||
<span class="macro">assert_eq!</span>(iter.remainder(), <span class="kw-2">&</span>[<span class="string">'m'</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.chunks_exact_mut" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.31.0">1.31.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#937">source</a></span><h4 class="code-header">pub fn <a href="#method.chunks_exact_mut" class="fnname">chunks_exact_mut</a>(&mut self, chunk_size: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.ChunksExactMut.html" title="struct core::slice::iter::ChunksExactMut">ChunksExactMut</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over <code>chunk_size</code> elements of the slice at a time, starting at the
|
||
beginning of the slice.</p>
|
||
<p>The chunks are mutable slices, and do not overlap. If <code>chunk_size</code> does not divide the
|
||
length of the slice, then the last up to <code>chunk_size-1</code> elements will be omitted and can be
|
||
retrieved from the <code>into_remainder</code> function of the iterator.</p>
|
||
<p>Due to each chunk having exactly <code>chunk_size</code> elements, the compiler can often optimize the
|
||
resulting code better than in the case of <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.chunks_mut"><code>chunks_mut</code></a>.</p>
|
||
<p>See <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.chunks_mut"><code>chunks_mut</code></a> for a variant of this iterator that also returns the remainder as a
|
||
smaller chunk, and <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.rchunks_exact_mut"><code>rchunks_exact_mut</code></a> for the same iterator but starting at the end of
|
||
the slice.</p>
|
||
<h5 id="panics-7"><a href="#panics-7">Panics</a></h5>
|
||
<p>Panics if <code>chunk_size</code> is 0.</p>
|
||
<h5 id="examples-32"><a href="#examples-32">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>count = <span class="number">1</span>;
|
||
|
||
<span class="kw">for </span>chunk <span class="kw">in </span>v.chunks_exact_mut(<span class="number">2</span>) {
|
||
<span class="kw">for </span>elem <span class="kw">in </span>chunk.iter_mut() {
|
||
<span class="kw-2">*</span>elem += count;
|
||
}
|
||
count += <span class="number">1</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(v, <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">0</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.as_chunks_unchecked" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#972">source</a><h4 class="code-header">pub unsafe fn <a href="#method.as_chunks_unchecked" class="fnname">as_chunks_unchecked</a><const N: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>(&self) -> &[<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.array.html">[T; N]</a>]</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_as_chunks</code>)</span></div></span></summary><div class="docblock"><p>Splits the slice into a slice of <code>N</code>-element arrays,
|
||
assuming that there’s no remainder.</p>
|
||
<h5 id="safety-3"><a href="#safety-3">Safety</a></h5>
|
||
<p>This may only be called when</p>
|
||
<ul>
|
||
<li>The slice splits exactly into <code>N</code>-element chunks (aka <code>self.len() % N == 0</code>).</li>
|
||
<li><code>N != 0</code>.</li>
|
||
</ul>
|
||
<h5 id="examples-33"><a href="#examples-33">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_as_chunks)]
|
||
</span><span class="kw">let </span>slice: <span class="kw-2">&</span>[char] = <span class="kw-2">&</span>[<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>, <span class="string">'!'</span>];
|
||
<span class="kw">let </span>chunks: <span class="kw-2">&</span>[[char; <span class="number">1</span>]] =
|
||
<span class="comment">// SAFETY: 1-element chunks never have remainder
|
||
</span><span class="kw">unsafe </span>{ slice.as_chunks_unchecked() };
|
||
<span class="macro">assert_eq!</span>(chunks, <span class="kw-2">&</span>[[<span class="string">'l'</span>], [<span class="string">'o'</span>], [<span class="string">'r'</span>], [<span class="string">'e'</span>], [<span class="string">'m'</span>], [<span class="string">'!'</span>]]);
|
||
<span class="kw">let </span>chunks: <span class="kw-2">&</span>[[char; <span class="number">3</span>]] =
|
||
<span class="comment">// SAFETY: The slice length (6) is a multiple of 3
|
||
</span><span class="kw">unsafe </span>{ slice.as_chunks_unchecked() };
|
||
<span class="macro">assert_eq!</span>(chunks, <span class="kw-2">&</span>[[<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>], [<span class="string">'e'</span>, <span class="string">'m'</span>, <span class="string">'!'</span>]]);
|
||
|
||
<span class="comment">// These would be unsound:
|
||
// let chunks: &[[_; 5]] = slice.as_chunks_unchecked() // The slice length is not a multiple of 5
|
||
// let chunks: &[[_; 0]] = slice.as_chunks_unchecked() // Zero-length chunks are never allowed</span></code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.as_chunks" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1008">source</a><h4 class="code-header">pub fn <a href="#method.as_chunks" class="fnname">as_chunks</a><const N: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>(&self) -> (&[<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.array.html">[T; N]</a>], &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_as_chunks</code>)</span></div></span></summary><div class="docblock"><p>Splits the slice into a slice of <code>N</code>-element arrays,
|
||
starting at the beginning of the slice,
|
||
and a remainder slice with length strictly less than <code>N</code>.</p>
|
||
<h5 id="panics-8"><a href="#panics-8">Panics</a></h5>
|
||
<p>Panics if <code>N</code> is 0. This check will most probably get changed to a compile time
|
||
error before this method gets stabilized.</p>
|
||
<h5 id="examples-34"><a href="#examples-34">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_as_chunks)]
|
||
</span><span class="kw">let </span>slice = [<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>];
|
||
<span class="kw">let </span>(chunks, remainder) = slice.as_chunks();
|
||
<span class="macro">assert_eq!</span>(chunks, <span class="kw-2">&</span>[[<span class="string">'l'</span>, <span class="string">'o'</span>], [<span class="string">'r'</span>, <span class="string">'e'</span>]]);
|
||
<span class="macro">assert_eq!</span>(remainder, <span class="kw-2">&</span>[<span class="string">'m'</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.as_rchunks" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1039">source</a><h4 class="code-header">pub fn <a href="#method.as_rchunks" class="fnname">as_rchunks</a><const N: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>(&self) -> (&<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, &[<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.array.html">[T; N]</a>])</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_as_chunks</code>)</span></div></span></summary><div class="docblock"><p>Splits the slice into a slice of <code>N</code>-element arrays,
|
||
starting at the end of the slice,
|
||
and a remainder slice with length strictly less than <code>N</code>.</p>
|
||
<h5 id="panics-9"><a href="#panics-9">Panics</a></h5>
|
||
<p>Panics if <code>N</code> is 0. This check will most probably get changed to a compile time
|
||
error before this method gets stabilized.</p>
|
||
<h5 id="examples-35"><a href="#examples-35">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_as_chunks)]
|
||
</span><span class="kw">let </span>slice = [<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>];
|
||
<span class="kw">let </span>(remainder, chunks) = slice.as_rchunks();
|
||
<span class="macro">assert_eq!</span>(remainder, <span class="kw-2">&</span>[<span class="string">'l'</span>]);
|
||
<span class="macro">assert_eq!</span>(chunks, <span class="kw-2">&</span>[[<span class="string">'o'</span>, <span class="string">'r'</span>], [<span class="string">'e'</span>, <span class="string">'m'</span>]]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.array_chunks" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1078">source</a><h4 class="code-header">pub fn <a href="#method.array_chunks" class="fnname">array_chunks</a><const N: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.ArrayChunks.html" title="struct core::slice::iter::ArrayChunks">ArrayChunks</a><'_, T, N></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>array_chunks</code>)</span></div></span></summary><div class="docblock"><p>Returns an iterator over <code>N</code> elements of the slice at a time, starting at the
|
||
beginning of the slice.</p>
|
||
<p>The chunks are array references and do not overlap. If <code>N</code> does not divide the
|
||
length of the slice, then the last up to <code>N-1</code> elements will be omitted and can be
|
||
retrieved from the <code>remainder</code> function of the iterator.</p>
|
||
<p>This method is the const generic equivalent of <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.chunks_exact"><code>chunks_exact</code></a>.</p>
|
||
<h5 id="panics-10"><a href="#panics-10">Panics</a></h5>
|
||
<p>Panics if <code>N</code> is 0. This check will most probably get changed to a compile time
|
||
error before this method gets stabilized.</p>
|
||
<h5 id="examples-36"><a href="#examples-36">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(array_chunks)]
|
||
</span><span class="kw">let </span>slice = [<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.array_chunks();
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'l'</span>, <span class="string">'o'</span>]);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'r'</span>, <span class="string">'e'</span>]);
|
||
<span class="macro">assert!</span>(iter.next().is_none());
|
||
<span class="macro">assert_eq!</span>(iter.remainder(), <span class="kw-2">&</span>[<span class="string">'m'</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.as_chunks_unchecked_mut" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1115">source</a><h4 class="code-header">pub unsafe fn <a href="#method.as_chunks_unchecked_mut" class="fnname">as_chunks_unchecked_mut</a><const N: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>(<br> &mut self<br>) -> &mut [<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.array.html">[T; N]</a>]</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_as_chunks</code>)</span></div></span></summary><div class="docblock"><p>Splits the slice into a slice of <code>N</code>-element arrays,
|
||
assuming that there’s no remainder.</p>
|
||
<h5 id="safety-4"><a href="#safety-4">Safety</a></h5>
|
||
<p>This may only be called when</p>
|
||
<ul>
|
||
<li>The slice splits exactly into <code>N</code>-element chunks (aka <code>self.len() % N == 0</code>).</li>
|
||
<li><code>N != 0</code>.</li>
|
||
</ul>
|
||
<h5 id="examples-37"><a href="#examples-37">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_as_chunks)]
|
||
</span><span class="kw">let </span>slice: <span class="kw-2">&mut </span>[char] = <span class="kw-2">&mut </span>[<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>, <span class="string">'!'</span>];
|
||
<span class="kw">let </span>chunks: <span class="kw-2">&mut </span>[[char; <span class="number">1</span>]] =
|
||
<span class="comment">// SAFETY: 1-element chunks never have remainder
|
||
</span><span class="kw">unsafe </span>{ slice.as_chunks_unchecked_mut() };
|
||
chunks[<span class="number">0</span>] = [<span class="string">'L'</span>];
|
||
<span class="macro">assert_eq!</span>(chunks, <span class="kw-2">&</span>[[<span class="string">'L'</span>], [<span class="string">'o'</span>], [<span class="string">'r'</span>], [<span class="string">'e'</span>], [<span class="string">'m'</span>], [<span class="string">'!'</span>]]);
|
||
<span class="kw">let </span>chunks: <span class="kw-2">&mut </span>[[char; <span class="number">3</span>]] =
|
||
<span class="comment">// SAFETY: The slice length (6) is a multiple of 3
|
||
</span><span class="kw">unsafe </span>{ slice.as_chunks_unchecked_mut() };
|
||
chunks[<span class="number">1</span>] = [<span class="string">'a'</span>, <span class="string">'x'</span>, <span class="string">'?'</span>];
|
||
<span class="macro">assert_eq!</span>(slice, <span class="kw-2">&</span>[<span class="string">'L'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'a'</span>, <span class="string">'x'</span>, <span class="string">'?'</span>]);
|
||
|
||
<span class="comment">// These would be unsound:
|
||
// let chunks: &[[_; 5]] = slice.as_chunks_unchecked_mut() // The slice length is not a multiple of 5
|
||
// let chunks: &[[_; 0]] = slice.as_chunks_unchecked_mut() // Zero-length chunks are never allowed</span></code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.as_chunks_mut" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1157">source</a><h4 class="code-header">pub fn <a href="#method.as_chunks_mut" class="fnname">as_chunks_mut</a><const N: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>(&mut self) -> (&mut [<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.array.html">[T; N]</a>], &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_as_chunks</code>)</span></div></span></summary><div class="docblock"><p>Splits the slice into a slice of <code>N</code>-element arrays,
|
||
starting at the beginning of the slice,
|
||
and a remainder slice with length strictly less than <code>N</code>.</p>
|
||
<h5 id="panics-11"><a href="#panics-11">Panics</a></h5>
|
||
<p>Panics if <code>N</code> is 0. This check will most probably get changed to a compile time
|
||
error before this method gets stabilized.</p>
|
||
<h5 id="examples-38"><a href="#examples-38">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_as_chunks)]
|
||
</span><span class="kw">let </span>v = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>count = <span class="number">1</span>;
|
||
|
||
<span class="kw">let </span>(chunks, remainder) = v.as_chunks_mut();
|
||
remainder[<span class="number">0</span>] = <span class="number">9</span>;
|
||
<span class="kw">for </span>chunk <span class="kw">in </span>chunks {
|
||
<span class="kw-2">*</span>chunk = [count; <span class="number">2</span>];
|
||
count += <span class="number">1</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(v, <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">9</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.as_rchunks_mut" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1194">source</a><h4 class="code-header">pub fn <a href="#method.as_rchunks_mut" class="fnname">as_rchunks_mut</a><const N: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>(&mut self) -> (&mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, &mut [<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.array.html">[T; N]</a>])</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_as_chunks</code>)</span></div></span></summary><div class="docblock"><p>Splits the slice into a slice of <code>N</code>-element arrays,
|
||
starting at the end of the slice,
|
||
and a remainder slice with length strictly less than <code>N</code>.</p>
|
||
<h5 id="panics-12"><a href="#panics-12">Panics</a></h5>
|
||
<p>Panics if <code>N</code> is 0. This check will most probably get changed to a compile time
|
||
error before this method gets stabilized.</p>
|
||
<h5 id="examples-39"><a href="#examples-39">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_as_chunks)]
|
||
</span><span class="kw">let </span>v = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>count = <span class="number">1</span>;
|
||
|
||
<span class="kw">let </span>(remainder, chunks) = v.as_rchunks_mut();
|
||
remainder[<span class="number">0</span>] = <span class="number">9</span>;
|
||
<span class="kw">for </span>chunk <span class="kw">in </span>chunks {
|
||
<span class="kw-2">*</span>chunk = [count; <span class="number">2</span>];
|
||
count += <span class="number">1</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(v, <span class="kw-2">&</span>[<span class="number">9</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">2</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.array_chunks_mut" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1235">source</a><h4 class="code-header">pub fn <a href="#method.array_chunks_mut" class="fnname">array_chunks_mut</a><const N: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>(&mut self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.ArrayChunksMut.html" title="struct core::slice::iter::ArrayChunksMut">ArrayChunksMut</a><'_, T, N></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>array_chunks</code>)</span></div></span></summary><div class="docblock"><p>Returns an iterator over <code>N</code> elements of the slice at a time, starting at the
|
||
beginning of the slice.</p>
|
||
<p>The chunks are mutable array references and do not overlap. If <code>N</code> does not divide
|
||
the length of the slice, then the last up to <code>N-1</code> elements will be omitted and
|
||
can be retrieved from the <code>into_remainder</code> function of the iterator.</p>
|
||
<p>This method is the const generic equivalent of <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.chunks_exact_mut"><code>chunks_exact_mut</code></a>.</p>
|
||
<h5 id="panics-13"><a href="#panics-13">Panics</a></h5>
|
||
<p>Panics if <code>N</code> is 0. This check will most probably get changed to a compile time
|
||
error before this method gets stabilized.</p>
|
||
<h5 id="examples-40"><a href="#examples-40">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(array_chunks)]
|
||
</span><span class="kw">let </span>v = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>count = <span class="number">1</span>;
|
||
|
||
<span class="kw">for </span>chunk <span class="kw">in </span>v.array_chunks_mut() {
|
||
<span class="kw-2">*</span>chunk = [count; <span class="number">2</span>];
|
||
count += <span class="number">1</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(v, <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">0</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.array_windows" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1267">source</a><h4 class="code-header">pub fn <a href="#method.array_windows" class="fnname">array_windows</a><const N: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.ArrayWindows.html" title="struct core::slice::iter::ArrayWindows">ArrayWindows</a><'_, T, N></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>array_windows</code>)</span></div></span></summary><div class="docblock"><p>Returns an iterator over overlapping windows of <code>N</code> elements of a slice,
|
||
starting at the beginning of the slice.</p>
|
||
<p>This is the const generic equivalent of <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.windows"><code>windows</code></a>.</p>
|
||
<p>If <code>N</code> is greater than the size of the slice, it will return no windows.</p>
|
||
<h5 id="panics-14"><a href="#panics-14">Panics</a></h5>
|
||
<p>Panics if <code>N</code> is 0. This check will most probably get changed to a compile time
|
||
error before this method gets stabilized.</p>
|
||
<h5 id="examples-41"><a href="#examples-41">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(array_windows)]
|
||
</span><span class="kw">let </span>slice = [<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.array_windows();
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">1</span>]);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">2</span>]);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">2</span>, <span class="number">3</span>]);
|
||
<span class="macro">assert!</span>(iter.next().is_none());</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.rchunks" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.31.0">1.31.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1301">source</a></span><h4 class="code-header">pub fn <a href="#method.rchunks" class="fnname">rchunks</a>(&self, chunk_size: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.RChunks.html" title="struct core::slice::iter::RChunks">RChunks</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over <code>chunk_size</code> elements of the slice at a time, starting at the end
|
||
of the slice.</p>
|
||
<p>The chunks are slices and do not overlap. If <code>chunk_size</code> does not divide the length of the
|
||
slice, then the last chunk will not have length <code>chunk_size</code>.</p>
|
||
<p>See <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.rchunks_exact"><code>rchunks_exact</code></a> for a variant of this iterator that returns chunks of always exactly
|
||
<code>chunk_size</code> elements, and <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.chunks"><code>chunks</code></a> for the same iterator but starting at the beginning
|
||
of the slice.</p>
|
||
<h5 id="panics-15"><a href="#panics-15">Panics</a></h5>
|
||
<p>Panics if <code>chunk_size</code> is 0.</p>
|
||
<h5 id="examples-42"><a href="#examples-42">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.rchunks(<span class="number">2</span>);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'e'</span>, <span class="string">'m'</span>]);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'o'</span>, <span class="string">'r'</span>]);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'l'</span>]);
|
||
<span class="macro">assert!</span>(iter.next().is_none());</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.rchunks_mut" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.31.0">1.31.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1339">source</a></span><h4 class="code-header">pub fn <a href="#method.rchunks_mut" class="fnname">rchunks_mut</a>(&mut self, chunk_size: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.RChunksMut.html" title="struct core::slice::iter::RChunksMut">RChunksMut</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over <code>chunk_size</code> elements of the slice at a time, starting at the end
|
||
of the slice.</p>
|
||
<p>The chunks are mutable slices, and do not overlap. If <code>chunk_size</code> does not divide the
|
||
length of the slice, then the last chunk will not have length <code>chunk_size</code>.</p>
|
||
<p>See <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.rchunks_exact_mut"><code>rchunks_exact_mut</code></a> for a variant of this iterator that returns chunks of always
|
||
exactly <code>chunk_size</code> elements, and <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.chunks_mut"><code>chunks_mut</code></a> for the same iterator but starting at the
|
||
beginning of the slice.</p>
|
||
<h5 id="panics-16"><a href="#panics-16">Panics</a></h5>
|
||
<p>Panics if <code>chunk_size</code> is 0.</p>
|
||
<h5 id="examples-43"><a href="#examples-43">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>count = <span class="number">1</span>;
|
||
|
||
<span class="kw">for </span>chunk <span class="kw">in </span>v.rchunks_mut(<span class="number">2</span>) {
|
||
<span class="kw">for </span>elem <span class="kw">in </span>chunk.iter_mut() {
|
||
<span class="kw-2">*</span>elem += count;
|
||
}
|
||
count += <span class="number">1</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(v, <span class="kw-2">&</span>[<span class="number">3</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">1</span>, <span class="number">1</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.rchunks_exact" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.31.0">1.31.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1378">source</a></span><h4 class="code-header">pub fn <a href="#method.rchunks_exact" class="fnname">rchunks_exact</a>(&self, chunk_size: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.RChunksExact.html" title="struct core::slice::iter::RChunksExact">RChunksExact</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over <code>chunk_size</code> elements of the slice at a time, starting at the
|
||
end of the slice.</p>
|
||
<p>The chunks are slices and do not overlap. If <code>chunk_size</code> does not divide the length of the
|
||
slice, then the last up to <code>chunk_size-1</code> elements will be omitted and can be retrieved
|
||
from the <code>remainder</code> function of the iterator.</p>
|
||
<p>Due to each chunk having exactly <code>chunk_size</code> elements, the compiler can often optimize the
|
||
resulting code better than in the case of <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.rchunks"><code>rchunks</code></a>.</p>
|
||
<p>See <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.rchunks"><code>rchunks</code></a> for a variant of this iterator that also returns the remainder as a smaller
|
||
chunk, and <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.chunks_exact"><code>chunks_exact</code></a> for the same iterator but starting at the beginning of the
|
||
slice.</p>
|
||
<h5 id="panics-17"><a href="#panics-17">Panics</a></h5>
|
||
<p>Panics if <code>chunk_size</code> is 0.</p>
|
||
<h5 id="examples-44"><a href="#examples-44">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.rchunks_exact(<span class="number">2</span>);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'e'</span>, <span class="string">'m'</span>]);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'o'</span>, <span class="string">'r'</span>]);
|
||
<span class="macro">assert!</span>(iter.next().is_none());
|
||
<span class="macro">assert_eq!</span>(iter.remainder(), <span class="kw-2">&</span>[<span class="string">'l'</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.rchunks_exact_mut" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.31.0">1.31.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1421">source</a></span><h4 class="code-header">pub fn <a href="#method.rchunks_exact_mut" class="fnname">rchunks_exact_mut</a>(&mut self, chunk_size: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.RChunksExactMut.html" title="struct core::slice::iter::RChunksExactMut">RChunksExactMut</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over <code>chunk_size</code> elements of the slice at a time, starting at the end
|
||
of the slice.</p>
|
||
<p>The chunks are mutable slices, and do not overlap. If <code>chunk_size</code> does not divide the
|
||
length of the slice, then the last up to <code>chunk_size-1</code> elements will be omitted and can be
|
||
retrieved from the <code>into_remainder</code> function of the iterator.</p>
|
||
<p>Due to each chunk having exactly <code>chunk_size</code> elements, the compiler can often optimize the
|
||
resulting code better than in the case of <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.chunks_mut"><code>chunks_mut</code></a>.</p>
|
||
<p>See <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.rchunks_mut"><code>rchunks_mut</code></a> for a variant of this iterator that also returns the remainder as a
|
||
smaller chunk, and <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.chunks_exact_mut"><code>chunks_exact_mut</code></a> for the same iterator but starting at the beginning
|
||
of the slice.</p>
|
||
<h5 id="panics-18"><a href="#panics-18">Panics</a></h5>
|
||
<p>Panics if <code>chunk_size</code> is 0.</p>
|
||
<h5 id="examples-45"><a href="#examples-45">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>count = <span class="number">1</span>;
|
||
|
||
<span class="kw">for </span>chunk <span class="kw">in </span>v.rchunks_exact_mut(<span class="number">2</span>) {
|
||
<span class="kw">for </span>elem <span class="kw">in </span>chunk.iter_mut() {
|
||
<span class="kw-2">*</span>elem += count;
|
||
}
|
||
count += <span class="number">1</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(v, <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">1</span>, <span class="number">1</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.group_by" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1464-1466">source</a><h4 class="code-header">pub fn <a href="#method.group_by" class="fnname">group_by</a><F>(&self, pred: F) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.GroupBy.html" title="struct core::slice::iter::GroupBy">GroupBy</a><'_, T, F><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,</span></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_group_by</code>)</span></div></span></summary><div class="docblock"><p>Returns an iterator over the slice producing non-overlapping runs
|
||
of elements using the predicate to separate them.</p>
|
||
<p>The predicate is called on two elements following themselves,
|
||
it means the predicate is called on <code>slice[0]</code> and <code>slice[1]</code>
|
||
then on <code>slice[1]</code> and <code>slice[2]</code> and so on.</p>
|
||
<h5 id="examples-46"><a href="#examples-46">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_group_by)]
|
||
|
||
</span><span class="kw">let </span>slice = <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">3</span>, <span class="number">3</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">2</span>];
|
||
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.group_by(|a, b| a == b);
|
||
|
||
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>][..]));
|
||
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">3</span>, <span class="number">3</span>][..]));
|
||
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">2</span>, <span class="number">2</span>, <span class="number">2</span>][..]));
|
||
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">None</span>);</code></pre></div>
|
||
<p>This method can be used to extract the sorted subslices:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_group_by)]
|
||
|
||
</span><span class="kw">let </span>slice = <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>];
|
||
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.group_by(|a, b| a <= b);
|
||
|
||
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>][..]));
|
||
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">2</span>, <span class="number">3</span>][..]));
|
||
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>][..]));
|
||
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">None</span>);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.group_by_mut" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1509-1511">source</a><h4 class="code-header">pub fn <a href="#method.group_by_mut" class="fnname">group_by_mut</a><F>(&mut self, pred: F) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.GroupByMut.html" title="struct core::slice::iter::GroupByMut">GroupByMut</a><'_, T, F><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,</span></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_group_by</code>)</span></div></span></summary><div class="docblock"><p>Returns an iterator over the slice producing non-overlapping mutable
|
||
runs of elements using the predicate to separate them.</p>
|
||
<p>The predicate is called on two elements following themselves,
|
||
it means the predicate is called on <code>slice[0]</code> and <code>slice[1]</code>
|
||
then on <code>slice[1]</code> and <code>slice[2]</code> and so on.</p>
|
||
<h5 id="examples-47"><a href="#examples-47">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_group_by)]
|
||
|
||
</span><span class="kw">let </span>slice = <span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">3</span>, <span class="number">3</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">2</span>];
|
||
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.group_by_mut(|a, b| a == b);
|
||
|
||
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>][..]));
|
||
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&mut </span>[<span class="number">3</span>, <span class="number">3</span>][..]));
|
||
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&mut </span>[<span class="number">2</span>, <span class="number">2</span>, <span class="number">2</span>][..]));
|
||
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">None</span>);</code></pre></div>
|
||
<p>This method can be used to extract the sorted subslices:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_group_by)]
|
||
|
||
</span><span class="kw">let </span>slice = <span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>];
|
||
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.group_by_mut(|a, b| a <= b);
|
||
|
||
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>][..]));
|
||
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&mut </span>[<span class="number">2</span>, <span class="number">3</span>][..]));
|
||
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&mut </span>[<span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>][..]));
|
||
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">None</span>);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.split_at" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1554">source</a></span><h4 class="code-header">pub fn <a href="#method.split_at" class="fnname">split_at</a>(&self, mid: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> (&<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)</h4></section></summary><div class="docblock"><p>Divides one slice into two at an index.</p>
|
||
<p>The first will contain all indices from <code>[0, mid)</code> (excluding
|
||
the index <code>mid</code> itself) and the second will contain all
|
||
indices from <code>[mid, len)</code> (excluding the index <code>len</code> itself).</p>
|
||
<h5 id="panics-19"><a href="#panics-19">Panics</a></h5>
|
||
<p>Panics if <code>mid > len</code>.</p>
|
||
<h5 id="examples-48"><a href="#examples-48">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>];
|
||
|
||
{
|
||
<span class="kw">let </span>(left, right) = v.split_at(<span class="number">0</span>);
|
||
<span class="macro">assert_eq!</span>(left, []);
|
||
<span class="macro">assert_eq!</span>(right, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);
|
||
}
|
||
|
||
{
|
||
<span class="kw">let </span>(left, right) = v.split_at(<span class="number">2</span>);
|
||
<span class="macro">assert_eq!</span>(left, [<span class="number">1</span>, <span class="number">2</span>]);
|
||
<span class="macro">assert_eq!</span>(right, [<span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);
|
||
}
|
||
|
||
{
|
||
<span class="kw">let </span>(left, right) = v.split_at(<span class="number">6</span>);
|
||
<span class="macro">assert_eq!</span>(left, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);
|
||
<span class="macro">assert_eq!</span>(right, []);
|
||
}</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.split_at_mut" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1587">source</a></span><h4 class="code-header">pub fn <a href="#method.split_at_mut" class="fnname">split_at_mut</a>(&mut self, mid: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> (&mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)</h4></section></summary><div class="docblock"><p>Divides one mutable slice into two at an index.</p>
|
||
<p>The first will contain all indices from <code>[0, mid)</code> (excluding
|
||
the index <code>mid</code> itself) and the second will contain all
|
||
indices from <code>[mid, len)</code> (excluding the index <code>len</code> itself).</p>
|
||
<h5 id="panics-20"><a href="#panics-20">Panics</a></h5>
|
||
<p>Panics if <code>mid > len</code>.</p>
|
||
<h5 id="examples-49"><a href="#examples-49">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="number">1</span>, <span class="number">0</span>, <span class="number">3</span>, <span class="number">0</span>, <span class="number">5</span>, <span class="number">6</span>];
|
||
<span class="kw">let </span>(left, right) = v.split_at_mut(<span class="number">2</span>);
|
||
<span class="macro">assert_eq!</span>(left, [<span class="number">1</span>, <span class="number">0</span>]);
|
||
<span class="macro">assert_eq!</span>(right, [<span class="number">3</span>, <span class="number">0</span>, <span class="number">5</span>, <span class="number">6</span>]);
|
||
left[<span class="number">1</span>] = <span class="number">2</span>;
|
||
right[<span class="number">1</span>] = <span class="number">4</span>;
|
||
<span class="macro">assert_eq!</span>(v, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.split_at_unchecked" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1640">source</a><h4 class="code-header">pub unsafe fn <a href="#method.split_at_unchecked" class="fnname">split_at_unchecked</a>(&self, mid: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> (&<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_split_at_unchecked</code>)</span></div></span></summary><div class="docblock"><p>Divides one slice into two at an index, without doing bounds checking.</p>
|
||
<p>The first will contain all indices from <code>[0, mid)</code> (excluding
|
||
the index <code>mid</code> itself) and the second will contain all
|
||
indices from <code>[mid, len)</code> (excluding the index <code>len</code> itself).</p>
|
||
<p>For a safe alternative see <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_at"><code>split_at</code></a>.</p>
|
||
<h5 id="safety-5"><a href="#safety-5">Safety</a></h5>
|
||
<p>Calling this method with an out-of-bounds index is <em><a href="https://doc.rust-lang.org/reference/behavior-considered-undefined.html">undefined behavior</a></em>
|
||
even if the resulting reference is not used. The caller has to ensure that
|
||
<code>0 <= mid <= self.len()</code>.</p>
|
||
<h5 id="examples-50"><a href="#examples-50">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_split_at_unchecked)]
|
||
|
||
</span><span class="kw">let </span>v = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>];
|
||
|
||
<span class="kw">unsafe </span>{
|
||
<span class="kw">let </span>(left, right) = v.split_at_unchecked(<span class="number">0</span>);
|
||
<span class="macro">assert_eq!</span>(left, []);
|
||
<span class="macro">assert_eq!</span>(right, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);
|
||
}
|
||
|
||
<span class="kw">unsafe </span>{
|
||
<span class="kw">let </span>(left, right) = v.split_at_unchecked(<span class="number">2</span>);
|
||
<span class="macro">assert_eq!</span>(left, [<span class="number">1</span>, <span class="number">2</span>]);
|
||
<span class="macro">assert_eq!</span>(right, [<span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);
|
||
}
|
||
|
||
<span class="kw">unsafe </span>{
|
||
<span class="kw">let </span>(left, right) = v.split_at_unchecked(<span class="number">6</span>);
|
||
<span class="macro">assert_eq!</span>(left, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);
|
||
<span class="macro">assert_eq!</span>(right, []);
|
||
}</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.split_at_mut_unchecked" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1689">source</a><h4 class="code-header">pub unsafe fn <a href="#method.split_at_mut_unchecked" class="fnname">split_at_mut_unchecked</a>(<br> &mut self,<br> mid: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a><br>) -> (&mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_split_at_unchecked</code>)</span></div></span></summary><div class="docblock"><p>Divides one mutable slice into two at an index, without doing bounds checking.</p>
|
||
<p>The first will contain all indices from <code>[0, mid)</code> (excluding
|
||
the index <code>mid</code> itself) and the second will contain all
|
||
indices from <code>[mid, len)</code> (excluding the index <code>len</code> itself).</p>
|
||
<p>For a safe alternative see <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_at_mut"><code>split_at_mut</code></a>.</p>
|
||
<h5 id="safety-6"><a href="#safety-6">Safety</a></h5>
|
||
<p>Calling this method with an out-of-bounds index is <em><a href="https://doc.rust-lang.org/reference/behavior-considered-undefined.html">undefined behavior</a></em>
|
||
even if the resulting reference is not used. The caller has to ensure that
|
||
<code>0 <= mid <= self.len()</code>.</p>
|
||
<h5 id="examples-51"><a href="#examples-51">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_split_at_unchecked)]
|
||
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="number">1</span>, <span class="number">0</span>, <span class="number">3</span>, <span class="number">0</span>, <span class="number">5</span>, <span class="number">6</span>];
|
||
<span class="comment">// scoped to restrict the lifetime of the borrows
|
||
</span><span class="kw">unsafe </span>{
|
||
<span class="kw">let </span>(left, right) = v.split_at_mut_unchecked(<span class="number">2</span>);
|
||
<span class="macro">assert_eq!</span>(left, [<span class="number">1</span>, <span class="number">0</span>]);
|
||
<span class="macro">assert_eq!</span>(right, [<span class="number">3</span>, <span class="number">0</span>, <span class="number">5</span>, <span class="number">6</span>]);
|
||
left[<span class="number">1</span>] = <span class="number">2</span>;
|
||
right[<span class="number">1</span>] = <span class="number">4</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(v, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.split_array_ref" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1745">source</a><h4 class="code-header">pub fn <a href="#method.split_array_ref" class="fnname">split_array_ref</a><const N: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>(&self) -> (&<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.array.html">[T; N]</a>, &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>split_array</code>)</span></div></span></summary><div class="docblock"><p>Divides one slice into an array and a remainder slice at an index.</p>
|
||
<p>The array will contain all indices from <code>[0, N)</code> (excluding
|
||
the index <code>N</code> itself) and the slice will contain all
|
||
indices from <code>[N, len)</code> (excluding the index <code>len</code> itself).</p>
|
||
<h5 id="panics-21"><a href="#panics-21">Panics</a></h5>
|
||
<p>Panics if <code>N > len</code>.</p>
|
||
<h5 id="examples-52"><a href="#examples-52">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(split_array)]
|
||
|
||
</span><span class="kw">let </span>v = <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>][..];
|
||
|
||
{
|
||
<span class="kw">let </span>(left, right) = v.split_array_ref::<<span class="number">0</span>>();
|
||
<span class="macro">assert_eq!</span>(left, <span class="kw-2">&</span>[]);
|
||
<span class="macro">assert_eq!</span>(right, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);
|
||
}
|
||
|
||
{
|
||
<span class="kw">let </span>(left, right) = v.split_array_ref::<<span class="number">2</span>>();
|
||
<span class="macro">assert_eq!</span>(left, <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">2</span>]);
|
||
<span class="macro">assert_eq!</span>(right, [<span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);
|
||
}
|
||
|
||
{
|
||
<span class="kw">let </span>(left, right) = v.split_array_ref::<<span class="number">6</span>>();
|
||
<span class="macro">assert_eq!</span>(left, <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);
|
||
<span class="macro">assert_eq!</span>(right, []);
|
||
}</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.split_array_mut" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1778">source</a><h4 class="code-header">pub fn <a href="#method.split_array_mut" class="fnname">split_array_mut</a><const N: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>(&mut self) -> (&mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.array.html">[T; N]</a>, &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>split_array</code>)</span></div></span></summary><div class="docblock"><p>Divides one mutable slice into an array and a remainder slice at an index.</p>
|
||
<p>The array will contain all indices from <code>[0, N)</code> (excluding
|
||
the index <code>N</code> itself) and the slice will contain all
|
||
indices from <code>[N, len)</code> (excluding the index <code>len</code> itself).</p>
|
||
<h5 id="panics-22"><a href="#panics-22">Panics</a></h5>
|
||
<p>Panics if <code>N > len</code>.</p>
|
||
<h5 id="examples-53"><a href="#examples-53">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(split_array)]
|
||
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>v = <span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">0</span>, <span class="number">3</span>, <span class="number">0</span>, <span class="number">5</span>, <span class="number">6</span>][..];
|
||
<span class="kw">let </span>(left, right) = v.split_array_mut::<<span class="number">2</span>>();
|
||
<span class="macro">assert_eq!</span>(left, <span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">0</span>]);
|
||
<span class="macro">assert_eq!</span>(right, [<span class="number">3</span>, <span class="number">0</span>, <span class="number">5</span>, <span class="number">6</span>]);
|
||
left[<span class="number">1</span>] = <span class="number">2</span>;
|
||
right[<span class="number">1</span>] = <span class="number">4</span>;
|
||
<span class="macro">assert_eq!</span>(v, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.rsplit_array_ref" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1823">source</a><h4 class="code-header">pub fn <a href="#method.rsplit_array_ref" class="fnname">rsplit_array_ref</a><const N: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>(&self) -> (&<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.array.html">[T; N]</a>)</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>split_array</code>)</span></div></span></summary><div class="docblock"><p>Divides one slice into an array and a remainder slice at an index from
|
||
the end.</p>
|
||
<p>The slice will contain all indices from <code>[0, len - N)</code> (excluding
|
||
the index <code>len - N</code> itself) and the array will contain all
|
||
indices from <code>[len - N, len)</code> (excluding the index <code>len</code> itself).</p>
|
||
<h5 id="panics-23"><a href="#panics-23">Panics</a></h5>
|
||
<p>Panics if <code>N > len</code>.</p>
|
||
<h5 id="examples-54"><a href="#examples-54">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(split_array)]
|
||
|
||
</span><span class="kw">let </span>v = <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>][..];
|
||
|
||
{
|
||
<span class="kw">let </span>(left, right) = v.rsplit_array_ref::<<span class="number">0</span>>();
|
||
<span class="macro">assert_eq!</span>(left, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);
|
||
<span class="macro">assert_eq!</span>(right, <span class="kw-2">&</span>[]);
|
||
}
|
||
|
||
{
|
||
<span class="kw">let </span>(left, right) = v.rsplit_array_ref::<<span class="number">2</span>>();
|
||
<span class="macro">assert_eq!</span>(left, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>]);
|
||
<span class="macro">assert_eq!</span>(right, <span class="kw-2">&</span>[<span class="number">5</span>, <span class="number">6</span>]);
|
||
}
|
||
|
||
{
|
||
<span class="kw">let </span>(left, right) = v.rsplit_array_ref::<<span class="number">6</span>>();
|
||
<span class="macro">assert_eq!</span>(left, []);
|
||
<span class="macro">assert_eq!</span>(right, <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);
|
||
}</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.rsplit_array_mut" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1857">source</a><h4 class="code-header">pub fn <a href="#method.rsplit_array_mut" class="fnname">rsplit_array_mut</a><const N: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>(&mut self) -> (&mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.array.html">[T; N]</a>)</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>split_array</code>)</span></div></span></summary><div class="docblock"><p>Divides one mutable slice into an array and a remainder slice at an
|
||
index from the end.</p>
|
||
<p>The slice will contain all indices from <code>[0, len - N)</code> (excluding
|
||
the index <code>N</code> itself) and the array will contain all
|
||
indices from <code>[len - N, len)</code> (excluding the index <code>len</code> itself).</p>
|
||
<h5 id="panics-24"><a href="#panics-24">Panics</a></h5>
|
||
<p>Panics if <code>N > len</code>.</p>
|
||
<h5 id="examples-55"><a href="#examples-55">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(split_array)]
|
||
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>v = <span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">0</span>, <span class="number">3</span>, <span class="number">0</span>, <span class="number">5</span>, <span class="number">6</span>][..];
|
||
<span class="kw">let </span>(left, right) = v.rsplit_array_mut::<<span class="number">4</span>>();
|
||
<span class="macro">assert_eq!</span>(left, [<span class="number">1</span>, <span class="number">0</span>]);
|
||
<span class="macro">assert_eq!</span>(right, <span class="kw-2">&mut </span>[<span class="number">3</span>, <span class="number">0</span>, <span class="number">5</span>, <span class="number">6</span>]);
|
||
left[<span class="number">1</span>] = <span class="number">2</span>;
|
||
right[<span class="number">1</span>] = <span class="number">4</span>;
|
||
<span class="macro">assert_eq!</span>(v, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.split" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1906-1908">source</a></span><h4 class="code-header">pub fn <a href="#method.split" class="fnname">split</a><F>(&self, pred: F) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.Split.html" title="struct core::slice::iter::Split">Split</a><'_, T, F><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,</span></h4></section></summary><div class="docblock"><p>Returns an iterator over subslices separated by elements that match
|
||
<code>pred</code>. The matched element is not contained in the subslices.</p>
|
||
<h5 id="examples-56"><a href="#examples-56">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">33</span>, <span class="number">20</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.split(|num| num % <span class="number">3 </span>== <span class="number">0</span>);
|
||
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">40</span>]);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">20</span>]);
|
||
<span class="macro">assert!</span>(iter.next().is_none());</code></pre></div>
|
||
<p>If the first element is matched, an empty slice will be the first item
|
||
returned by the iterator. Similarly, if the last element in the slice
|
||
is matched, an empty slice will be the last item returned by the
|
||
iterator:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">33</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.split(|num| num % <span class="number">3 </span>== <span class="number">0</span>);
|
||
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">40</span>]);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[]);
|
||
<span class="macro">assert!</span>(iter.next().is_none());</code></pre></div>
|
||
<p>If two matched elements are directly adjacent, an empty slice will be
|
||
present between them:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="number">10</span>, <span class="number">6</span>, <span class="number">33</span>, <span class="number">20</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.split(|num| num % <span class="number">3 </span>== <span class="number">0</span>);
|
||
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">10</span>]);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[]);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">20</span>]);
|
||
<span class="macro">assert!</span>(iter.next().is_none());</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.split_mut" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1928-1930">source</a></span><h4 class="code-header">pub fn <a href="#method.split_mut" class="fnname">split_mut</a><F>(&mut self, pred: F) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.SplitMut.html" title="struct core::slice::iter::SplitMut">SplitMut</a><'_, T, F><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,</span></h4></section></summary><div class="docblock"><p>Returns an iterator over mutable subslices separated by elements that
|
||
match <code>pred</code>. The matched element is not contained in the subslices.</p>
|
||
<h5 id="examples-57"><a href="#examples-57">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>, <span class="number">20</span>, <span class="number">60</span>, <span class="number">50</span>];
|
||
|
||
<span class="kw">for </span>group <span class="kw">in </span>v.split_mut(|num| <span class="kw-2">*</span>num % <span class="number">3 </span>== <span class="number">0</span>) {
|
||
group[<span class="number">0</span>] = <span class="number">1</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(v, [<span class="number">1</span>, <span class="number">40</span>, <span class="number">30</span>, <span class="number">1</span>, <span class="number">60</span>, <span class="number">1</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.split_inclusive" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.51.0">1.51.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1964-1966">source</a></span><h4 class="code-header">pub fn <a href="#method.split_inclusive" class="fnname">split_inclusive</a><F>(&self, pred: F) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.SplitInclusive.html" title="struct core::slice::iter::SplitInclusive">SplitInclusive</a><'_, T, F><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,</span></h4></section></summary><div class="docblock"><p>Returns an iterator over subslices separated by elements that match
|
||
<code>pred</code>. The matched element is contained in the end of the previous
|
||
subslice as a terminator.</p>
|
||
<h5 id="examples-58"><a href="#examples-58">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">33</span>, <span class="number">20</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.split_inclusive(|num| num % <span class="number">3 </span>== <span class="number">0</span>);
|
||
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">40</span>, <span class="number">33</span>]);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">20</span>]);
|
||
<span class="macro">assert!</span>(iter.next().is_none());</code></pre></div>
|
||
<p>If the last element of the slice is matched,
|
||
that element will be considered the terminator of the preceding slice.
|
||
That slice will be the last item returned by the iterator.</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="number">3</span>, <span class="number">10</span>, <span class="number">40</span>, <span class="number">33</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.split_inclusive(|num| num % <span class="number">3 </span>== <span class="number">0</span>);
|
||
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">3</span>]);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">40</span>, <span class="number">33</span>]);
|
||
<span class="macro">assert!</span>(iter.next().is_none());</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.split_inclusive_mut" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.51.0">1.51.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#1988-1990">source</a></span><h4 class="code-header">pub fn <a href="#method.split_inclusive_mut" class="fnname">split_inclusive_mut</a><F>(&mut self, pred: F) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.SplitInclusiveMut.html" title="struct core::slice::iter::SplitInclusiveMut">SplitInclusiveMut</a><'_, T, F><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,</span></h4></section></summary><div class="docblock"><p>Returns an iterator over mutable subslices separated by elements that
|
||
match <code>pred</code>. The matched element is contained in the previous
|
||
subslice as a terminator.</p>
|
||
<h5 id="examples-59"><a href="#examples-59">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>, <span class="number">20</span>, <span class="number">60</span>, <span class="number">50</span>];
|
||
|
||
<span class="kw">for </span>group <span class="kw">in </span>v.split_inclusive_mut(|num| <span class="kw-2">*</span>num % <span class="number">3 </span>== <span class="number">0</span>) {
|
||
<span class="kw">let </span>terminator_idx = group.len()-<span class="number">1</span>;
|
||
group[terminator_idx] = <span class="number">1</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(v, [<span class="number">10</span>, <span class="number">40</span>, <span class="number">1</span>, <span class="number">20</span>, <span class="number">1</span>, <span class="number">1</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.rsplit" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.27.0">1.27.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2024-2026">source</a></span><h4 class="code-header">pub fn <a href="#method.rsplit" class="fnname">rsplit</a><F>(&self, pred: F) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.RSplit.html" title="struct core::slice::iter::RSplit">RSplit</a><'_, T, F><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,</span></h4></section></summary><div class="docblock"><p>Returns an iterator over subslices separated by elements that match
|
||
<code>pred</code>, starting at the end of the slice and working backwards.
|
||
The matched element is not contained in the subslices.</p>
|
||
<h5 id="examples-60"><a href="#examples-60">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="number">11</span>, <span class="number">22</span>, <span class="number">33</span>, <span class="number">0</span>, <span class="number">44</span>, <span class="number">55</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.rsplit(|num| <span class="kw-2">*</span>num == <span class="number">0</span>);
|
||
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">44</span>, <span class="number">55</span>]);
|
||
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">11</span>, <span class="number">22</span>, <span class="number">33</span>]);
|
||
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">None</span>);</code></pre></div>
|
||
<p>As with <code>split()</code>, if the first or last element is matched, an empty
|
||
slice will be the first (or last) item returned by the iterator.</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>it = v.rsplit(|n| <span class="kw-2">*</span>n % <span class="number">2 </span>== <span class="number">0</span>);
|
||
<span class="macro">assert_eq!</span>(it.next().unwrap(), <span class="kw-2">&</span>[]);
|
||
<span class="macro">assert_eq!</span>(it.next().unwrap(), <span class="kw-2">&</span>[<span class="number">3</span>, <span class="number">5</span>]);
|
||
<span class="macro">assert_eq!</span>(it.next().unwrap(), <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">1</span>]);
|
||
<span class="macro">assert_eq!</span>(it.next().unwrap(), <span class="kw-2">&</span>[]);
|
||
<span class="macro">assert_eq!</span>(it.next(), <span class="prelude-val">None</span>);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.rsplit_mut" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.27.0">1.27.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2050-2052">source</a></span><h4 class="code-header">pub fn <a href="#method.rsplit_mut" class="fnname">rsplit_mut</a><F>(&mut self, pred: F) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.RSplitMut.html" title="struct core::slice::iter::RSplitMut">RSplitMut</a><'_, T, F><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,</span></h4></section></summary><div class="docblock"><p>Returns an iterator over mutable subslices separated by elements that
|
||
match <code>pred</code>, starting at the end of the slice and working
|
||
backwards. The matched element is not contained in the subslices.</p>
|
||
<h5 id="examples-61"><a href="#examples-61">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="number">100</span>, <span class="number">400</span>, <span class="number">300</span>, <span class="number">200</span>, <span class="number">600</span>, <span class="number">500</span>];
|
||
|
||
<span class="kw">let </span><span class="kw-2">mut </span>count = <span class="number">0</span>;
|
||
<span class="kw">for </span>group <span class="kw">in </span>v.rsplit_mut(|num| <span class="kw-2">*</span>num % <span class="number">3 </span>== <span class="number">0</span>) {
|
||
count += <span class="number">1</span>;
|
||
group[<span class="number">0</span>] = count;
|
||
}
|
||
<span class="macro">assert_eq!</span>(v, [<span class="number">3</span>, <span class="number">400</span>, <span class="number">300</span>, <span class="number">2</span>, <span class="number">600</span>, <span class="number">1</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.splitn" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2078-2080">source</a></span><h4 class="code-header">pub fn <a href="#method.splitn" class="fnname">splitn</a><F>(&self, n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, pred: F) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.SplitN.html" title="struct core::slice::iter::SplitN">SplitN</a><'_, T, F><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,</span></h4></section></summary><div class="docblock"><p>Returns an iterator over subslices separated by elements that match
|
||
<code>pred</code>, limited to returning at most <code>n</code> items. The matched element is
|
||
not contained in the subslices.</p>
|
||
<p>The last element returned, if any, will contain the remainder of the
|
||
slice.</p>
|
||
<h5 id="examples-62"><a href="#examples-62">Examples</a></h5>
|
||
<p>Print the slice split once by numbers divisible by 3 (i.e., <code>[10, 40]</code>,
|
||
<code>[20, 60, 50]</code>):</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>, <span class="number">20</span>, <span class="number">60</span>, <span class="number">50</span>];
|
||
|
||
<span class="kw">for </span>group <span class="kw">in </span>v.splitn(<span class="number">2</span>, |num| <span class="kw-2">*</span>num % <span class="number">3 </span>== <span class="number">0</span>) {
|
||
<span class="macro">println!</span>(<span class="string">"{group:?}"</span>);
|
||
}</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.splitn_mut" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2104-2106">source</a></span><h4 class="code-header">pub fn <a href="#method.splitn_mut" class="fnname">splitn_mut</a><F>(&mut self, n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, pred: F) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.SplitNMut.html" title="struct core::slice::iter::SplitNMut">SplitNMut</a><'_, T, F><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,</span></h4></section></summary><div class="docblock"><p>Returns an iterator over mutable subslices separated by elements that match
|
||
<code>pred</code>, limited to returning at most <code>n</code> items. The matched element is
|
||
not contained in the subslices.</p>
|
||
<p>The last element returned, if any, will contain the remainder of the
|
||
slice.</p>
|
||
<h5 id="examples-63"><a href="#examples-63">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>, <span class="number">20</span>, <span class="number">60</span>, <span class="number">50</span>];
|
||
|
||
<span class="kw">for </span>group <span class="kw">in </span>v.splitn_mut(<span class="number">2</span>, |num| <span class="kw-2">*</span>num % <span class="number">3 </span>== <span class="number">0</span>) {
|
||
group[<span class="number">0</span>] = <span class="number">1</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(v, [<span class="number">1</span>, <span class="number">40</span>, <span class="number">30</span>, <span class="number">1</span>, <span class="number">60</span>, <span class="number">50</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.rsplitn" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2133-2135">source</a></span><h4 class="code-header">pub fn <a href="#method.rsplitn" class="fnname">rsplitn</a><F>(&self, n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, pred: F) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.RSplitN.html" title="struct core::slice::iter::RSplitN">RSplitN</a><'_, T, F><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,</span></h4></section></summary><div class="docblock"><p>Returns an iterator over subslices separated by elements that match
|
||
<code>pred</code> limited to returning at most <code>n</code> items. This starts at the end of
|
||
the slice and works backwards. The matched element is not contained in
|
||
the subslices.</p>
|
||
<p>The last element returned, if any, will contain the remainder of the
|
||
slice.</p>
|
||
<h5 id="examples-64"><a href="#examples-64">Examples</a></h5>
|
||
<p>Print the slice split once, starting from the end, by numbers divisible
|
||
by 3 (i.e., <code>[50]</code>, <code>[10, 40, 30, 20]</code>):</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>, <span class="number">20</span>, <span class="number">60</span>, <span class="number">50</span>];
|
||
|
||
<span class="kw">for </span>group <span class="kw">in </span>v.rsplitn(<span class="number">2</span>, |num| <span class="kw-2">*</span>num % <span class="number">3 </span>== <span class="number">0</span>) {
|
||
<span class="macro">println!</span>(<span class="string">"{group:?}"</span>);
|
||
}</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.rsplitn_mut" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2160-2162">source</a></span><h4 class="code-header">pub fn <a href="#method.rsplitn_mut" class="fnname">rsplitn_mut</a><F>(&mut self, n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, pred: F) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/iter/struct.RSplitNMut.html" title="struct core::slice::iter::RSplitNMut">RSplitNMut</a><'_, T, F><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,</span></h4></section></summary><div class="docblock"><p>Returns an iterator over subslices separated by elements that match
|
||
<code>pred</code> limited to returning at most <code>n</code> items. This starts at the end of
|
||
the slice and works backwards. The matched element is not contained in
|
||
the subslices.</p>
|
||
<p>The last element returned, if any, will contain the remainder of the
|
||
slice.</p>
|
||
<h5 id="examples-65"><a href="#examples-65">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>s = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>, <span class="number">20</span>, <span class="number">60</span>, <span class="number">50</span>];
|
||
|
||
<span class="kw">for </span>group <span class="kw">in </span>s.rsplitn_mut(<span class="number">2</span>, |num| <span class="kw-2">*</span>num % <span class="number">3 </span>== <span class="number">0</span>) {
|
||
group[<span class="number">0</span>] = <span class="number">1</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(s, [<span class="number">1</span>, <span class="number">40</span>, <span class="number">30</span>, <span class="number">20</span>, <span class="number">60</span>, <span class="number">1</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.contains" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2195-2197">source</a></span><h4 class="code-header">pub fn <a href="#method.contains" class="fnname">contains</a>(&self, x: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a><span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a><T>,</span></h4></section></summary><div class="docblock"><p>Returns <code>true</code> if the slice contains an element with the given value.</p>
|
||
<p>This operation is <em>O</em>(<em>n</em>).</p>
|
||
<p>Note that if you have a sorted slice, <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.binary_search"><code>binary_search</code></a> may be faster.</p>
|
||
<h5 id="examples-66"><a href="#examples-66">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>];
|
||
<span class="macro">assert!</span>(v.contains(<span class="kw-2">&</span><span class="number">30</span>));
|
||
<span class="macro">assert!</span>(!v.contains(<span class="kw-2">&</span><span class="number">50</span>));</code></pre></div>
|
||
<p>If you do not have a <code>&T</code>, but some other value that you can compare
|
||
with one (for example, <code>String</code> implements <code>PartialEq<str></code>), you can
|
||
use <code>iter().any</code>:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = [String::from(<span class="string">"hello"</span>), String::from(<span class="string">"world"</span>)]; <span class="comment">// slice of `String`
|
||
</span><span class="macro">assert!</span>(v.iter().any(|e| e == <span class="string">"hello"</span>)); <span class="comment">// search with `&str`
|
||
</span><span class="macro">assert!</span>(!v.iter().any(|e| e == <span class="string">"hi"</span>));</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.starts_with" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2224-2226">source</a></span><h4 class="code-header">pub fn <a href="#method.starts_with" class="fnname">starts_with</a>(&self, needle: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a><span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a><T>,</span></h4></section></summary><div class="docblock"><p>Returns <code>true</code> if <code>needle</code> is a prefix of the slice.</p>
|
||
<h5 id="examples-67"><a href="#examples-67">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>];
|
||
<span class="macro">assert!</span>(v.starts_with(<span class="kw-2">&</span>[<span class="number">10</span>]));
|
||
<span class="macro">assert!</span>(v.starts_with(<span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">40</span>]));
|
||
<span class="macro">assert!</span>(!v.starts_with(<span class="kw-2">&</span>[<span class="number">50</span>]));
|
||
<span class="macro">assert!</span>(!v.starts_with(<span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">50</span>]));</code></pre></div>
|
||
<p>Always returns <code>true</code> if <code>needle</code> is an empty slice:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = <span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>];
|
||
<span class="macro">assert!</span>(v.starts_with(<span class="kw-2">&</span>[]));
|
||
<span class="kw">let </span>v: <span class="kw-2">&</span>[u8] = <span class="kw-2">&</span>[];
|
||
<span class="macro">assert!</span>(v.starts_with(<span class="kw-2">&</span>[]));</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.ends_with" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2254-2256">source</a></span><h4 class="code-header">pub fn <a href="#method.ends_with" class="fnname">ends_with</a>(&self, needle: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a><span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a><T>,</span></h4></section></summary><div class="docblock"><p>Returns <code>true</code> if <code>needle</code> is a suffix of the slice.</p>
|
||
<h5 id="examples-68"><a href="#examples-68">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>];
|
||
<span class="macro">assert!</span>(v.ends_with(<span class="kw-2">&</span>[<span class="number">30</span>]));
|
||
<span class="macro">assert!</span>(v.ends_with(<span class="kw-2">&</span>[<span class="number">40</span>, <span class="number">30</span>]));
|
||
<span class="macro">assert!</span>(!v.ends_with(<span class="kw-2">&</span>[<span class="number">50</span>]));
|
||
<span class="macro">assert!</span>(!v.ends_with(<span class="kw-2">&</span>[<span class="number">50</span>, <span class="number">30</span>]));</code></pre></div>
|
||
<p>Always returns <code>true</code> if <code>needle</code> is an empty slice:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = <span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>];
|
||
<span class="macro">assert!</span>(v.ends_with(<span class="kw-2">&</span>[]));
|
||
<span class="kw">let </span>v: <span class="kw-2">&</span>[u8] = <span class="kw-2">&</span>[];
|
||
<span class="macro">assert!</span>(v.ends_with(<span class="kw-2">&</span>[]));</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.strip_prefix" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.51.0">1.51.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2284-2286">source</a></span><h4 class="code-header">pub fn <a href="#method.strip_prefix" class="fnname">strip_prefix</a><P>(&self, prefix: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>P) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>><span class="where fmt-newline">where<br> P: <a class="trait" href="https://doc.rust-lang.org/nightly/core/slice/trait.SlicePattern.html" title="trait core::slice::SlicePattern">SlicePattern</a><Item = T> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a><T>,</span></h4></section></summary><div class="docblock"><p>Returns a subslice with the prefix removed.</p>
|
||
<p>If the slice starts with <code>prefix</code>, returns the subslice after the prefix, wrapped in <code>Some</code>.
|
||
If <code>prefix</code> is empty, simply returns the original slice.</p>
|
||
<p>If the slice does not start with <code>prefix</code>, returns <code>None</code>.</p>
|
||
<h5 id="examples-69"><a href="#examples-69">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = <span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>];
|
||
<span class="macro">assert_eq!</span>(v.strip_prefix(<span class="kw-2">&</span>[<span class="number">10</span>]), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">40</span>, <span class="number">30</span>][..]));
|
||
<span class="macro">assert_eq!</span>(v.strip_prefix(<span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">40</span>]), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">30</span>][..]));
|
||
<span class="macro">assert_eq!</span>(v.strip_prefix(<span class="kw-2">&</span>[<span class="number">50</span>]), <span class="prelude-val">None</span>);
|
||
<span class="macro">assert_eq!</span>(v.strip_prefix(<span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">50</span>]), <span class="prelude-val">None</span>);
|
||
|
||
<span class="kw">let </span>prefix : <span class="kw-2">&</span>str = <span class="string">"he"</span>;
|
||
<span class="macro">assert_eq!</span>(<span class="string">b"hello"</span>.strip_prefix(prefix.as_bytes()),
|
||
<span class="prelude-val">Some</span>(<span class="string">b"llo"</span>.as_ref()));</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.strip_suffix" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.51.0">1.51.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2318-2320">source</a></span><h4 class="code-header">pub fn <a href="#method.strip_suffix" class="fnname">strip_suffix</a><P>(&self, suffix: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>P) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>><span class="where fmt-newline">where<br> P: <a class="trait" href="https://doc.rust-lang.org/nightly/core/slice/trait.SlicePattern.html" title="trait core::slice::SlicePattern">SlicePattern</a><Item = T> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a><T>,</span></h4></section></summary><div class="docblock"><p>Returns a subslice with the suffix removed.</p>
|
||
<p>If the slice ends with <code>suffix</code>, returns the subslice before the suffix, wrapped in <code>Some</code>.
|
||
If <code>suffix</code> is empty, simply returns the original slice.</p>
|
||
<p>If the slice does not end with <code>suffix</code>, returns <code>None</code>.</p>
|
||
<h5 id="examples-70"><a href="#examples-70">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = <span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>];
|
||
<span class="macro">assert_eq!</span>(v.strip_suffix(<span class="kw-2">&</span>[<span class="number">30</span>]), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">40</span>][..]));
|
||
<span class="macro">assert_eq!</span>(v.strip_suffix(<span class="kw-2">&</span>[<span class="number">40</span>, <span class="number">30</span>]), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">10</span>][..]));
|
||
<span class="macro">assert_eq!</span>(v.strip_suffix(<span class="kw-2">&</span>[<span class="number">50</span>]), <span class="prelude-val">None</span>);
|
||
<span class="macro">assert_eq!</span>(v.strip_suffix(<span class="kw-2">&</span>[<span class="number">50</span>, <span class="number">30</span>]), <span class="prelude-val">None</span>);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.binary_search" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2402-2404">source</a></span><h4 class="code-header">pub fn <a href="#method.binary_search" class="fnname">binary_search</a>(&self, x: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>><span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html" title="trait core::cmp::Ord">Ord</a>,</span></h4></section></summary><div class="docblock"><p>Binary searches this slice for a given element.
|
||
This behaves similarly to <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.contains"><code>contains</code></a> if this slice is sorted.</p>
|
||
<p>If the value is found then <a href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html#variant.Ok" title="Result::Ok"><code>Result::Ok</code></a> is returned, containing the
|
||
index of the matching element. If there are multiple matches, then any
|
||
one of the matches could be returned. The index is chosen
|
||
deterministically, but is subject to change in future versions of Rust.
|
||
If the value is not found then <a href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html#variant.Err" title="Result::Err"><code>Result::Err</code></a> is returned, containing
|
||
the index where a matching element could be inserted while maintaining
|
||
sorted order.</p>
|
||
<p>See also <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.binary_search_by"><code>binary_search_by</code></a>, <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.binary_search_by_key"><code>binary_search_by_key</code></a>, and <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.partition_point"><code>partition_point</code></a>.</p>
|
||
<h5 id="examples-71"><a href="#examples-71">Examples</a></h5>
|
||
<p>Looks up a series of four elements. The first is found, with a
|
||
uniquely determined position; the second and third are not
|
||
found; the fourth could match any position in <code>[1, 4]</code>.</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>s = [<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>, <span class="number">13</span>, <span class="number">21</span>, <span class="number">34</span>, <span class="number">55</span>];
|
||
|
||
<span class="macro">assert_eq!</span>(s.binary_search(<span class="kw-2">&</span><span class="number">13</span>), <span class="prelude-val">Ok</span>(<span class="number">9</span>));
|
||
<span class="macro">assert_eq!</span>(s.binary_search(<span class="kw-2">&</span><span class="number">4</span>), <span class="prelude-val">Err</span>(<span class="number">7</span>));
|
||
<span class="macro">assert_eq!</span>(s.binary_search(<span class="kw-2">&</span><span class="number">100</span>), <span class="prelude-val">Err</span>(<span class="number">13</span>));
|
||
<span class="kw">let </span>r = s.binary_search(<span class="kw-2">&</span><span class="number">1</span>);
|
||
<span class="macro">assert!</span>(<span class="kw">match </span>r { <span class="prelude-val">Ok</span>(<span class="number">1</span>..=<span class="number">4</span>) => <span class="bool-val">true</span>, <span class="kw">_ </span>=> <span class="bool-val">false</span>, });</code></pre></div>
|
||
<p>If you want to find that whole <em>range</em> of matching items, rather than
|
||
an arbitrary matching one, that can be done using <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.partition_point"><code>partition_point</code></a>:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>s = [<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>, <span class="number">13</span>, <span class="number">21</span>, <span class="number">34</span>, <span class="number">55</span>];
|
||
|
||
<span class="kw">let </span>low = s.partition_point(|x| x < <span class="kw-2">&</span><span class="number">1</span>);
|
||
<span class="macro">assert_eq!</span>(low, <span class="number">1</span>);
|
||
<span class="kw">let </span>high = s.partition_point(|x| x <= <span class="kw-2">&</span><span class="number">1</span>);
|
||
<span class="macro">assert_eq!</span>(high, <span class="number">5</span>);
|
||
<span class="kw">let </span>r = s.binary_search(<span class="kw-2">&</span><span class="number">1</span>);
|
||
<span class="macro">assert!</span>((low..high).contains(<span class="kw-2">&</span>r.unwrap()));
|
||
|
||
<span class="macro">assert!</span>(s[..low].iter().all(|<span class="kw-2">&</span>x| x < <span class="number">1</span>));
|
||
<span class="macro">assert!</span>(s[low..high].iter().all(|<span class="kw-2">&</span>x| x == <span class="number">1</span>));
|
||
<span class="macro">assert!</span>(s[high..].iter().all(|<span class="kw-2">&</span>x| x > <span class="number">1</span>));
|
||
|
||
<span class="comment">// For something not found, the "range" of equal items is empty
|
||
</span><span class="macro">assert_eq!</span>(s.partition_point(|x| x < <span class="kw-2">&</span><span class="number">11</span>), <span class="number">9</span>);
|
||
<span class="macro">assert_eq!</span>(s.partition_point(|x| x <= <span class="kw-2">&</span><span class="number">11</span>), <span class="number">9</span>);
|
||
<span class="macro">assert_eq!</span>(s.binary_search(<span class="kw-2">&</span><span class="number">11</span>), <span class="prelude-val">Err</span>(<span class="number">9</span>));</code></pre></div>
|
||
<p>If you want to insert an item to a sorted vector, while maintaining
|
||
sort order, consider using <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.partition_point"><code>partition_point</code></a>:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>s = <span class="macro">vec!</span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>, <span class="number">13</span>, <span class="number">21</span>, <span class="number">34</span>, <span class="number">55</span>];
|
||
<span class="kw">let </span>num = <span class="number">42</span>;
|
||
<span class="kw">let </span>idx = s.partition_point(|<span class="kw-2">&</span>x| x < num);
|
||
<span class="comment">// The above is equivalent to `let idx = s.binary_search(&num).unwrap_or_else(|x| x);`
|
||
</span>s.insert(idx, num);
|
||
<span class="macro">assert_eq!</span>(s, [<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>, <span class="number">13</span>, <span class="number">21</span>, <span class="number">34</span>, <span class="number">42</span>, <span class="number">55</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.binary_search_by" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2453-2455">source</a></span><h4 class="code-header">pub fn <a href="#method.binary_search_by" class="fnname">binary_search_by</a><'a, F>(&'a self, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a </a>T) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering">Ordering</a>,</span></h4></section></summary><div class="docblock"><p>Binary searches this slice with a comparator function.
|
||
This behaves similarly to <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.contains"><code>contains</code></a> if this slice is sorted.</p>
|
||
<p>The comparator function should implement an order consistent
|
||
with the sort order of the underlying slice, returning an
|
||
order code that indicates whether its argument is <code>Less</code>,
|
||
<code>Equal</code> or <code>Greater</code> the desired target.</p>
|
||
<p>If the value is found then <a href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html#variant.Ok" title="Result::Ok"><code>Result::Ok</code></a> is returned, containing the
|
||
index of the matching element. If there are multiple matches, then any
|
||
one of the matches could be returned. The index is chosen
|
||
deterministically, but is subject to change in future versions of Rust.
|
||
If the value is not found then <a href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html#variant.Err" title="Result::Err"><code>Result::Err</code></a> is returned, containing
|
||
the index where a matching element could be inserted while maintaining
|
||
sorted order.</p>
|
||
<p>See also <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.binary_search"><code>binary_search</code></a>, <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.binary_search_by_key"><code>binary_search_by_key</code></a>, and <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.partition_point"><code>partition_point</code></a>.</p>
|
||
<h5 id="examples-72"><a href="#examples-72">Examples</a></h5>
|
||
<p>Looks up a series of four elements. The first is found, with a
|
||
uniquely determined position; the second and third are not
|
||
found; the fourth could match any position in <code>[1, 4]</code>.</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>s = [<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>, <span class="number">13</span>, <span class="number">21</span>, <span class="number">34</span>, <span class="number">55</span>];
|
||
|
||
<span class="kw">let </span>seek = <span class="number">13</span>;
|
||
<span class="macro">assert_eq!</span>(s.binary_search_by(|probe| probe.cmp(<span class="kw-2">&</span>seek)), <span class="prelude-val">Ok</span>(<span class="number">9</span>));
|
||
<span class="kw">let </span>seek = <span class="number">4</span>;
|
||
<span class="macro">assert_eq!</span>(s.binary_search_by(|probe| probe.cmp(<span class="kw-2">&</span>seek)), <span class="prelude-val">Err</span>(<span class="number">7</span>));
|
||
<span class="kw">let </span>seek = <span class="number">100</span>;
|
||
<span class="macro">assert_eq!</span>(s.binary_search_by(|probe| probe.cmp(<span class="kw-2">&</span>seek)), <span class="prelude-val">Err</span>(<span class="number">13</span>));
|
||
<span class="kw">let </span>seek = <span class="number">1</span>;
|
||
<span class="kw">let </span>r = s.binary_search_by(|probe| probe.cmp(<span class="kw-2">&</span>seek));
|
||
<span class="macro">assert!</span>(<span class="kw">match </span>r { <span class="prelude-val">Ok</span>(<span class="number">1</span>..=<span class="number">4</span>) => <span class="bool-val">true</span>, <span class="kw">_ </span>=> <span class="bool-val">false</span>, });</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.binary_search_by_key" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.10.0">1.10.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2542-2545">source</a></span><h4 class="code-header">pub fn <a href="#method.binary_search_by_key" class="fnname">binary_search_by_key</a><'a, B, F>(<br> &'a self,<br> b: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>B,<br> f: F<br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a </a>T) -> B,<br> B: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html" title="trait core::cmp::Ord">Ord</a>,</span></h4></section></summary><div class="docblock"><p>Binary searches this slice with a key extraction function.
|
||
This behaves similarly to <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.contains"><code>contains</code></a> if this slice is sorted.</p>
|
||
<p>Assumes that the slice is sorted by the key, for instance with
|
||
<a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.sort_by_key"><code>sort_by_key</code></a> using the same key extraction function.</p>
|
||
<p>If the value is found then <a href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html#variant.Ok" title="Result::Ok"><code>Result::Ok</code></a> is returned, containing the
|
||
index of the matching element. If there are multiple matches, then any
|
||
one of the matches could be returned. The index is chosen
|
||
deterministically, but is subject to change in future versions of Rust.
|
||
If the value is not found then <a href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html#variant.Err" title="Result::Err"><code>Result::Err</code></a> is returned, containing
|
||
the index where a matching element could be inserted while maintaining
|
||
sorted order.</p>
|
||
<p>See also <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.binary_search"><code>binary_search</code></a>, <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.binary_search_by"><code>binary_search_by</code></a>, and <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.partition_point"><code>partition_point</code></a>.</p>
|
||
<h5 id="examples-73"><a href="#examples-73">Examples</a></h5>
|
||
<p>Looks up a series of four elements in a slice of pairs sorted by
|
||
their second elements. The first is found, with a uniquely
|
||
determined position; the second and third are not found; the
|
||
fourth could match any position in <code>[1, 4]</code>.</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>s = [(<span class="number">0</span>, <span class="number">0</span>), (<span class="number">2</span>, <span class="number">1</span>), (<span class="number">4</span>, <span class="number">1</span>), (<span class="number">5</span>, <span class="number">1</span>), (<span class="number">3</span>, <span class="number">1</span>),
|
||
(<span class="number">1</span>, <span class="number">2</span>), (<span class="number">2</span>, <span class="number">3</span>), (<span class="number">4</span>, <span class="number">5</span>), (<span class="number">5</span>, <span class="number">8</span>), (<span class="number">3</span>, <span class="number">13</span>),
|
||
(<span class="number">1</span>, <span class="number">21</span>), (<span class="number">2</span>, <span class="number">34</span>), (<span class="number">4</span>, <span class="number">55</span>)];
|
||
|
||
<span class="macro">assert_eq!</span>(s.binary_search_by_key(<span class="kw-2">&</span><span class="number">13</span>, |<span class="kw-2">&</span>(a, b)| b), <span class="prelude-val">Ok</span>(<span class="number">9</span>));
|
||
<span class="macro">assert_eq!</span>(s.binary_search_by_key(<span class="kw-2">&</span><span class="number">4</span>, |<span class="kw-2">&</span>(a, b)| b), <span class="prelude-val">Err</span>(<span class="number">7</span>));
|
||
<span class="macro">assert_eq!</span>(s.binary_search_by_key(<span class="kw-2">&</span><span class="number">100</span>, |<span class="kw-2">&</span>(a, b)| b), <span class="prelude-val">Err</span>(<span class="number">13</span>));
|
||
<span class="kw">let </span>r = s.binary_search_by_key(<span class="kw-2">&</span><span class="number">1</span>, |<span class="kw-2">&</span>(a, b)| b);
|
||
<span class="macro">assert!</span>(<span class="kw">match </span>r { <span class="prelude-val">Ok</span>(<span class="number">1</span>..=<span class="number">4</span>) => <span class="bool-val">true</span>, <span class="kw">_ </span>=> <span class="bool-val">false</span>, });</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.sort_unstable" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.20.0">1.20.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2578-2580">source</a></span><h4 class="code-header">pub fn <a href="#method.sort_unstable" class="fnname">sort_unstable</a>(&mut self)<span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html" title="trait core::cmp::Ord">Ord</a>,</span></h4></section></summary><div class="docblock"><p>Sorts the slice, but might not preserve the order of equal elements.</p>
|
||
<p>This sort is unstable (i.e., may reorder equal elements), in-place
|
||
(i.e., does not allocate), and <em>O</em>(<em>n</em> * log(<em>n</em>)) worst-case.</p>
|
||
<h5 id="current-implementation-1"><a href="#current-implementation-1">Current implementation</a></h5>
|
||
<p>The current algorithm is based on <a href="https://github.com/orlp/pdqsort">pattern-defeating quicksort</a> by Orson Peters,
|
||
which combines the fast average case of randomized quicksort with the fast worst case of
|
||
heapsort, while achieving linear time on slices with certain patterns. It uses some
|
||
randomization to avoid degenerate cases, but with a fixed seed to always provide
|
||
deterministic behavior.</p>
|
||
<p>It is typically faster than stable sorting, except in a few special cases, e.g., when the
|
||
slice consists of several concatenated sorted sequences.</p>
|
||
<h5 id="examples-74"><a href="#examples-74">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [-<span class="number">5</span>, <span class="number">4</span>, <span class="number">1</span>, -<span class="number">3</span>, <span class="number">2</span>];
|
||
|
||
v.sort_unstable();
|
||
<span class="macro">assert!</span>(v == [-<span class="number">5</span>, -<span class="number">3</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">4</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.sort_unstable_by" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.20.0">1.20.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2633-2635">source</a></span><h4 class="code-header">pub fn <a href="#method.sort_unstable_by" class="fnname">sort_unstable_by</a><F>(&mut self, compare: F)<span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering">Ordering</a>,</span></h4></section></summary><div class="docblock"><p>Sorts the slice with a comparator function, but might not preserve the order of equal
|
||
elements.</p>
|
||
<p>This sort is unstable (i.e., may reorder equal elements), in-place
|
||
(i.e., does not allocate), and <em>O</em>(<em>n</em> * log(<em>n</em>)) worst-case.</p>
|
||
<p>The comparator function must define a total ordering for the elements in the slice. If
|
||
the ordering is not total, the order of the elements is unspecified. An order is a
|
||
total order if it is (for all <code>a</code>, <code>b</code> and <code>c</code>):</p>
|
||
<ul>
|
||
<li>total and antisymmetric: exactly one of <code>a < b</code>, <code>a == b</code> or <code>a > b</code> is true, and</li>
|
||
<li>transitive, <code>a < b</code> and <code>b < c</code> implies <code>a < c</code>. The same must hold for both <code>==</code> and <code>></code>.</li>
|
||
</ul>
|
||
<p>For example, while <a href="https://doc.rust-lang.org/nightly/std/primitive.f64.html" title="f64"><code>f64</code></a> doesn’t implement <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html" title="Ord"><code>Ord</code></a> because <code>NaN != NaN</code>, we can use
|
||
<code>partial_cmp</code> as our sort function when we know the slice doesn’t contain a <code>NaN</code>.</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>floats = [<span class="number">5f64</span>, <span class="number">4.0</span>, <span class="number">1.0</span>, <span class="number">3.0</span>, <span class="number">2.0</span>];
|
||
floats.sort_unstable_by(|a, b| a.partial_cmp(b).unwrap());
|
||
<span class="macro">assert_eq!</span>(floats, [<span class="number">1.0</span>, <span class="number">2.0</span>, <span class="number">3.0</span>, <span class="number">4.0</span>, <span class="number">5.0</span>]);</code></pre></div>
|
||
<h5 id="current-implementation-2"><a href="#current-implementation-2">Current implementation</a></h5>
|
||
<p>The current algorithm is based on <a href="https://github.com/orlp/pdqsort">pattern-defeating quicksort</a> by Orson Peters,
|
||
which combines the fast average case of randomized quicksort with the fast worst case of
|
||
heapsort, while achieving linear time on slices with certain patterns. It uses some
|
||
randomization to avoid degenerate cases, but with a fixed seed to always provide
|
||
deterministic behavior.</p>
|
||
<p>It is typically faster than stable sorting, except in a few special cases, e.g., when the
|
||
slice consists of several concatenated sorted sequences.</p>
|
||
<h5 id="examples-75"><a href="#examples-75">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="number">5</span>, <span class="number">4</span>, <span class="number">1</span>, <span class="number">3</span>, <span class="number">2</span>];
|
||
v.sort_unstable_by(|a, b| a.cmp(b));
|
||
<span class="macro">assert!</span>(v == [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>]);
|
||
|
||
<span class="comment">// reverse sorting
|
||
</span>v.sort_unstable_by(|a, b| b.cmp(a));
|
||
<span class="macro">assert!</span>(v == [<span class="number">5</span>, <span class="number">4</span>, <span class="number">3</span>, <span class="number">2</span>, <span class="number">1</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.sort_unstable_by_key" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.20.0">1.20.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2671-2674">source</a></span><h4 class="code-header">pub fn <a href="#method.sort_unstable_by_key" class="fnname">sort_unstable_by_key</a><K, F>(&mut self, f: F)<span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> K,<br> K: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html" title="trait core::cmp::Ord">Ord</a>,</span></h4></section></summary><div class="docblock"><p>Sorts the slice with a key extraction function, but might not preserve the order of equal
|
||
elements.</p>
|
||
<p>This sort is unstable (i.e., may reorder equal elements), in-place
|
||
(i.e., does not allocate), and <em>O</em>(m * <em>n</em> * log(<em>n</em>)) worst-case, where the key function is
|
||
<em>O</em>(<em>m</em>).</p>
|
||
<h5 id="current-implementation-3"><a href="#current-implementation-3">Current implementation</a></h5>
|
||
<p>The current algorithm is based on <a href="https://github.com/orlp/pdqsort">pattern-defeating quicksort</a> by Orson Peters,
|
||
which combines the fast average case of randomized quicksort with the fast worst case of
|
||
heapsort, while achieving linear time on slices with certain patterns. It uses some
|
||
randomization to avoid degenerate cases, but with a fixed seed to always provide
|
||
deterministic behavior.</p>
|
||
<p>Due to its key calling strategy, <a href="#method.sort_unstable_by_key"><code>sort_unstable_by_key</code></a>
|
||
is likely to be slower than <a href="#method.sort_by_cached_key"><code>sort_by_cached_key</code></a> in
|
||
cases where the key function is expensive.</p>
|
||
<h5 id="examples-76"><a href="#examples-76">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [-<span class="number">5i32</span>, <span class="number">4</span>, <span class="number">1</span>, -<span class="number">3</span>, <span class="number">2</span>];
|
||
|
||
v.sort_unstable_by_key(|k| k.abs());
|
||
<span class="macro">assert!</span>(v == [<span class="number">1</span>, <span class="number">2</span>, -<span class="number">3</span>, <span class="number">4</span>, -<span class="number">5</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.select_nth_unstable" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.49.0">1.49.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2718-2720">source</a></span><h4 class="code-header">pub fn <a href="#method.select_nth_unstable" class="fnname">select_nth_unstable</a>(<br> &mut self,<br> index: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a><br>) -> (&mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T, &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)<span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html" title="trait core::cmp::Ord">Ord</a>,</span></h4></section></summary><div class="docblock"><p>Reorder the slice such that the element at <code>index</code> is at its final sorted position.</p>
|
||
<p>This reordering has the additional property that any value at position <code>i < index</code> will be
|
||
less than or equal to any value at a position <code>j > index</code>. Additionally, this reordering is
|
||
unstable (i.e. any number of equal elements may end up at position <code>index</code>), in-place
|
||
(i.e. does not allocate), and <em>O</em>(<em>n</em>) worst-case. This function is also/ known as “kth
|
||
element” in other libraries. It returns a triplet of the following from the reordered slice:
|
||
the subslice prior to <code>index</code>, the element at <code>index</code>, and the subslice after <code>index</code>;
|
||
accordingly, the values in those two subslices will respectively all be less-than-or-equal-to
|
||
and greater-than-or-equal-to the value of the element at <code>index</code>.</p>
|
||
<h5 id="current-implementation-4"><a href="#current-implementation-4">Current implementation</a></h5>
|
||
<p>The current algorithm is based on the quickselect portion of the same quicksort algorithm
|
||
used for <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.sort_unstable"><code>sort_unstable</code></a>.</p>
|
||
<h5 id="panics-25"><a href="#panics-25">Panics</a></h5>
|
||
<p>Panics when <code>index >= len()</code>, meaning it always panics on empty slices.</p>
|
||
<h5 id="examples-77"><a href="#examples-77">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [-<span class="number">5i32</span>, <span class="number">4</span>, <span class="number">1</span>, -<span class="number">3</span>, <span class="number">2</span>];
|
||
|
||
<span class="comment">// Find the median
|
||
</span>v.select_nth_unstable(<span class="number">2</span>);
|
||
|
||
<span class="comment">// We are only guaranteed the slice will be one of the following, based on the way we sort
|
||
// about the specified index.
|
||
</span><span class="macro">assert!</span>(v == [-<span class="number">3</span>, -<span class="number">5</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">4</span>] ||
|
||
v == [-<span class="number">5</span>, -<span class="number">3</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">4</span>] ||
|
||
v == [-<span class="number">3</span>, -<span class="number">5</span>, <span class="number">1</span>, <span class="number">4</span>, <span class="number">2</span>] ||
|
||
v == [-<span class="number">5</span>, -<span class="number">3</span>, <span class="number">1</span>, <span class="number">4</span>, <span class="number">2</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.select_nth_unstable_by" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.49.0">1.49.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2766-2772">source</a></span><h4 class="code-header">pub fn <a href="#method.select_nth_unstable_by" class="fnname">select_nth_unstable_by</a><F>(<br> &mut self,<br> index: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>,<br> compare: F<br>) -> (&mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T, &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)<span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering">Ordering</a>,</span></h4></section></summary><div class="docblock"><p>Reorder the slice with a comparator function such that the element at <code>index</code> is at its
|
||
final sorted position.</p>
|
||
<p>This reordering has the additional property that any value at position <code>i < index</code> will be
|
||
less than or equal to any value at a position <code>j > index</code> using the comparator function.
|
||
Additionally, this reordering is unstable (i.e. any number of equal elements may end up at
|
||
position <code>index</code>), in-place (i.e. does not allocate), and <em>O</em>(<em>n</em>) worst-case. This function
|
||
is also known as “kth element” in other libraries. It returns a triplet of the following from
|
||
the slice reordered according to the provided comparator function: the subslice prior to
|
||
<code>index</code>, the element at <code>index</code>, and the subslice after <code>index</code>; accordingly, the values in
|
||
those two subslices will respectively all be less-than-or-equal-to and greater-than-or-equal-to
|
||
the value of the element at <code>index</code>.</p>
|
||
<h5 id="current-implementation-5"><a href="#current-implementation-5">Current implementation</a></h5>
|
||
<p>The current algorithm is based on the quickselect portion of the same quicksort algorithm
|
||
used for <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.sort_unstable"><code>sort_unstable</code></a>.</p>
|
||
<h5 id="panics-26"><a href="#panics-26">Panics</a></h5>
|
||
<p>Panics when <code>index >= len()</code>, meaning it always panics on empty slices.</p>
|
||
<h5 id="examples-78"><a href="#examples-78">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [-<span class="number">5i32</span>, <span class="number">4</span>, <span class="number">1</span>, -<span class="number">3</span>, <span class="number">2</span>];
|
||
|
||
<span class="comment">// Find the median as if the slice were sorted in descending order.
|
||
</span>v.select_nth_unstable_by(<span class="number">2</span>, |a, b| b.cmp(a));
|
||
|
||
<span class="comment">// We are only guaranteed the slice will be one of the following, based on the way we sort
|
||
// about the specified index.
|
||
</span><span class="macro">assert!</span>(v == [<span class="number">2</span>, <span class="number">4</span>, <span class="number">1</span>, -<span class="number">5</span>, -<span class="number">3</span>] ||
|
||
v == [<span class="number">2</span>, <span class="number">4</span>, <span class="number">1</span>, -<span class="number">3</span>, -<span class="number">5</span>] ||
|
||
v == [<span class="number">4</span>, <span class="number">2</span>, <span class="number">1</span>, -<span class="number">5</span>, -<span class="number">3</span>] ||
|
||
v == [<span class="number">4</span>, <span class="number">2</span>, <span class="number">1</span>, -<span class="number">3</span>, -<span class="number">5</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.select_nth_unstable_by_key" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.49.0">1.49.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2818-2825">source</a></span><h4 class="code-header">pub fn <a href="#method.select_nth_unstable_by_key" class="fnname">select_nth_unstable_by_key</a><K, F>(<br> &mut self,<br> index: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>,<br> f: F<br>) -> (&mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T, &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)<span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> K,<br> K: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html" title="trait core::cmp::Ord">Ord</a>,</span></h4></section></summary><div class="docblock"><p>Reorder the slice with a key extraction function such that the element at <code>index</code> is at its
|
||
final sorted position.</p>
|
||
<p>This reordering has the additional property that any value at position <code>i < index</code> will be
|
||
less than or equal to any value at a position <code>j > index</code> using the key extraction function.
|
||
Additionally, this reordering is unstable (i.e. any number of equal elements may end up at
|
||
position <code>index</code>), in-place (i.e. does not allocate), and <em>O</em>(<em>n</em>) worst-case. This function
|
||
is also known as “kth element” in other libraries. It returns a triplet of the following from
|
||
the slice reordered according to the provided key extraction function: the subslice prior to
|
||
<code>index</code>, the element at <code>index</code>, and the subslice after <code>index</code>; accordingly, the values in
|
||
those two subslices will respectively all be less-than-or-equal-to and greater-than-or-equal-to
|
||
the value of the element at <code>index</code>.</p>
|
||
<h5 id="current-implementation-6"><a href="#current-implementation-6">Current implementation</a></h5>
|
||
<p>The current algorithm is based on the quickselect portion of the same quicksort algorithm
|
||
used for <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.sort_unstable"><code>sort_unstable</code></a>.</p>
|
||
<h5 id="panics-27"><a href="#panics-27">Panics</a></h5>
|
||
<p>Panics when <code>index >= len()</code>, meaning it always panics on empty slices.</p>
|
||
<h5 id="examples-79"><a href="#examples-79">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [-<span class="number">5i32</span>, <span class="number">4</span>, <span class="number">1</span>, -<span class="number">3</span>, <span class="number">2</span>];
|
||
|
||
<span class="comment">// Return the median as if the array were sorted according to absolute value.
|
||
</span>v.select_nth_unstable_by_key(<span class="number">2</span>, |a| a.abs());
|
||
|
||
<span class="comment">// We are only guaranteed the slice will be one of the following, based on the way we sort
|
||
// about the specified index.
|
||
</span><span class="macro">assert!</span>(v == [<span class="number">1</span>, <span class="number">2</span>, -<span class="number">3</span>, <span class="number">4</span>, -<span class="number">5</span>] ||
|
||
v == [<span class="number">1</span>, <span class="number">2</span>, -<span class="number">3</span>, -<span class="number">5</span>, <span class="number">4</span>] ||
|
||
v == [<span class="number">2</span>, <span class="number">1</span>, -<span class="number">3</span>, <span class="number">4</span>, -<span class="number">5</span>] ||
|
||
v == [<span class="number">2</span>, <span class="number">1</span>, -<span class="number">3</span>, -<span class="number">5</span>, <span class="number">4</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.partition_dedup" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2852-2854">source</a><h4 class="code-header">pub fn <a href="#method.partition_dedup" class="fnname">partition_dedup</a>(&mut self) -> (&mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)<span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a><T>,</span></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_partition_dedup</code>)</span></div></span></summary><div class="docblock"><p>Moves all consecutive repeated elements to the end of the slice according to the
|
||
<a href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="PartialEq"><code>PartialEq</code></a> trait implementation.</p>
|
||
<p>Returns two slices. The first contains no consecutive repeated elements.
|
||
The second contains all the duplicates in no specified order.</p>
|
||
<p>If the slice is sorted, the first returned slice contains no duplicates.</p>
|
||
<h5 id="examples-80"><a href="#examples-80">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_partition_dedup)]
|
||
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>slice = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">3</span>, <span class="number">2</span>, <span class="number">1</span>, <span class="number">1</span>];
|
||
|
||
<span class="kw">let </span>(dedup, duplicates) = slice.partition_dedup();
|
||
|
||
<span class="macro">assert_eq!</span>(dedup, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">2</span>, <span class="number">1</span>]);
|
||
<span class="macro">assert_eq!</span>(duplicates, [<span class="number">2</span>, <span class="number">3</span>, <span class="number">1</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.partition_dedup_by" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#2886-2888">source</a><h4 class="code-header">pub fn <a href="#method.partition_dedup_by" class="fnname">partition_dedup_by</a><F>(&mut self, same_bucket: F) -> (&mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)<span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,</span></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_partition_dedup</code>)</span></div></span></summary><div class="docblock"><p>Moves all but the first of consecutive elements to the end of the slice satisfying
|
||
a given equality relation.</p>
|
||
<p>Returns two slices. The first contains no consecutive repeated elements.
|
||
The second contains all the duplicates in no specified order.</p>
|
||
<p>The <code>same_bucket</code> function is passed references to two elements from the slice and
|
||
must determine if the elements compare equal. The elements are passed in opposite order
|
||
from their order in the slice, so if <code>same_bucket(a, b)</code> returns <code>true</code>, <code>a</code> is moved
|
||
at the end of the slice.</p>
|
||
<p>If the slice is sorted, the first returned slice contains no duplicates.</p>
|
||
<h5 id="examples-81"><a href="#examples-81">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_partition_dedup)]
|
||
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>slice = [<span class="string">"foo"</span>, <span class="string">"Foo"</span>, <span class="string">"BAZ"</span>, <span class="string">"Bar"</span>, <span class="string">"bar"</span>, <span class="string">"baz"</span>, <span class="string">"BAZ"</span>];
|
||
|
||
<span class="kw">let </span>(dedup, duplicates) = slice.partition_dedup_by(|a, b| a.eq_ignore_ascii_case(b));
|
||
|
||
<span class="macro">assert_eq!</span>(dedup, [<span class="string">"foo"</span>, <span class="string">"BAZ"</span>, <span class="string">"Bar"</span>, <span class="string">"baz"</span>]);
|
||
<span class="macro">assert_eq!</span>(duplicates, [<span class="string">"bar"</span>, <span class="string">"Foo"</span>, <span class="string">"BAZ"</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.partition_dedup_by_key" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3012-3015">source</a><h4 class="code-header">pub fn <a href="#method.partition_dedup_by_key" class="fnname">partition_dedup_by_key</a><K, F>(&mut self, key: F) -> (&mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)<span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T) -> K,<br> K: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a><K>,</span></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_partition_dedup</code>)</span></div></span></summary><div class="docblock"><p>Moves all but the first of consecutive elements to the end of the slice that resolve
|
||
to the same key.</p>
|
||
<p>Returns two slices. The first contains no consecutive repeated elements.
|
||
The second contains all the duplicates in no specified order.</p>
|
||
<p>If the slice is sorted, the first returned slice contains no duplicates.</p>
|
||
<h5 id="examples-82"><a href="#examples-82">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_partition_dedup)]
|
||
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>slice = [<span class="number">10</span>, <span class="number">20</span>, <span class="number">21</span>, <span class="number">30</span>, <span class="number">30</span>, <span class="number">20</span>, <span class="number">11</span>, <span class="number">13</span>];
|
||
|
||
<span class="kw">let </span>(dedup, duplicates) = slice.partition_dedup_by_key(|i| <span class="kw-2">*</span>i / <span class="number">10</span>);
|
||
|
||
<span class="macro">assert_eq!</span>(dedup, [<span class="number">10</span>, <span class="number">20</span>, <span class="number">30</span>, <span class="number">20</span>, <span class="number">11</span>]);
|
||
<span class="macro">assert_eq!</span>(duplicates, [<span class="number">21</span>, <span class="number">30</span>, <span class="number">13</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.rotate_left" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.26.0">1.26.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3051">source</a></span><h4 class="code-header">pub fn <a href="#method.rotate_left" class="fnname">rotate_left</a>(&mut self, mid: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>)</h4></section></summary><div class="docblock"><p>Rotates the slice in-place such that the first <code>mid</code> elements of the
|
||
slice move to the end while the last <code>self.len() - mid</code> elements move to
|
||
the front. After calling <code>rotate_left</code>, the element previously at index
|
||
<code>mid</code> will become the first element in the slice.</p>
|
||
<h5 id="panics-28"><a href="#panics-28">Panics</a></h5>
|
||
<p>This function will panic if <code>mid</code> is greater than the length of the
|
||
slice. Note that <code>mid == self.len()</code> does <em>not</em> panic and is a no-op
|
||
rotation.</p>
|
||
<h5 id="complexity"><a href="#complexity">Complexity</a></h5>
|
||
<p>Takes linear (in <code>self.len()</code>) time.</p>
|
||
<h5 id="examples-83"><a href="#examples-83">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>a = [<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>, <span class="string">'d'</span>, <span class="string">'e'</span>, <span class="string">'f'</span>];
|
||
a.rotate_left(<span class="number">2</span>);
|
||
<span class="macro">assert_eq!</span>(a, [<span class="string">'c'</span>, <span class="string">'d'</span>, <span class="string">'e'</span>, <span class="string">'f'</span>, <span class="string">'a'</span>, <span class="string">'b'</span>]);</code></pre></div>
|
||
<p>Rotating a subslice:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>a = [<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>, <span class="string">'d'</span>, <span class="string">'e'</span>, <span class="string">'f'</span>];
|
||
a[<span class="number">1</span>..<span class="number">5</span>].rotate_left(<span class="number">1</span>);
|
||
<span class="macro">assert_eq!</span>(a, [<span class="string">'a'</span>, <span class="string">'c'</span>, <span class="string">'d'</span>, <span class="string">'e'</span>, <span class="string">'b'</span>, <span class="string">'f'</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.rotate_right" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.26.0">1.26.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3094">source</a></span><h4 class="code-header">pub fn <a href="#method.rotate_right" class="fnname">rotate_right</a>(&mut self, k: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>)</h4></section></summary><div class="docblock"><p>Rotates the slice in-place such that the first <code>self.len() - k</code>
|
||
elements of the slice move to the end while the last <code>k</code> elements move
|
||
to the front. After calling <code>rotate_right</code>, the element previously at
|
||
index <code>self.len() - k</code> will become the first element in the slice.</p>
|
||
<h5 id="panics-29"><a href="#panics-29">Panics</a></h5>
|
||
<p>This function will panic if <code>k</code> is greater than the length of the
|
||
slice. Note that <code>k == self.len()</code> does <em>not</em> panic and is a no-op
|
||
rotation.</p>
|
||
<h5 id="complexity-1"><a href="#complexity-1">Complexity</a></h5>
|
||
<p>Takes linear (in <code>self.len()</code>) time.</p>
|
||
<h5 id="examples-84"><a href="#examples-84">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>a = [<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>, <span class="string">'d'</span>, <span class="string">'e'</span>, <span class="string">'f'</span>];
|
||
a.rotate_right(<span class="number">2</span>);
|
||
<span class="macro">assert_eq!</span>(a, [<span class="string">'e'</span>, <span class="string">'f'</span>, <span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>, <span class="string">'d'</span>]);</code></pre></div>
|
||
<p>Rotate a subslice:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>a = [<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>, <span class="string">'d'</span>, <span class="string">'e'</span>, <span class="string">'f'</span>];
|
||
a[<span class="number">1</span>..<span class="number">5</span>].rotate_right(<span class="number">1</span>);
|
||
<span class="macro">assert_eq!</span>(a, [<span class="string">'a'</span>, <span class="string">'e'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>, <span class="string">'d'</span>, <span class="string">'f'</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fill" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.50.0">1.50.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3117-3119">source</a></span><h4 class="code-header">pub fn <a href="#method.fill" class="fnname">fill</a>(&mut self, value: T)<span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</span></h4></section></summary><div class="docblock"><p>Fills <code>self</code> with elements by cloning <code>value</code>.</p>
|
||
<h5 id="examples-85"><a href="#examples-85">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>buf = <span class="macro">vec!</span>[<span class="number">0</span>; <span class="number">10</span>];
|
||
buf.fill(<span class="number">1</span>);
|
||
<span class="macro">assert_eq!</span>(buf, <span class="macro">vec!</span>[<span class="number">1</span>; <span class="number">10</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fill_with" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.51.0">1.51.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3141-3143">source</a></span><h4 class="code-header">pub fn <a href="#method.fill_with" class="fnname">fill_with</a><F>(&mut self, f: F)<span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>() -> T,</span></h4></section></summary><div class="docblock"><p>Fills <code>self</code> with elements returned by calling a closure repeatedly.</p>
|
||
<p>This method uses a closure to create new values. If you’d rather
|
||
<a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="Clone"><code>Clone</code></a> a given value, use <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.fill"><code>fill</code></a>. If you want to use the <a href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html" title="Default"><code>Default</code></a>
|
||
trait to generate values, you can pass <a href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html#tymethod.default" title="Default::default"><code>Default::default</code></a> as the
|
||
argument.</p>
|
||
<h5 id="examples-86"><a href="#examples-86">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>buf = <span class="macro">vec!</span>[<span class="number">1</span>; <span class="number">10</span>];
|
||
buf.fill_with(Default::default);
|
||
<span class="macro">assert_eq!</span>(buf, <span class="macro">vec!</span>[<span class="number">0</span>; <span class="number">10</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.clone_from_slice" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.7.0">1.7.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3204-3206">source</a></span><h4 class="code-header">pub fn <a href="#method.clone_from_slice" class="fnname">clone_from_slice</a>(&mut self, src: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)<span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</span></h4></section></summary><div class="docblock"><p>Copies the elements from <code>src</code> into <code>self</code>.</p>
|
||
<p>The length of <code>src</code> must be the same as <code>self</code>.</p>
|
||
<h5 id="panics-30"><a href="#panics-30">Panics</a></h5>
|
||
<p>This function will panic if the two slices have different lengths.</p>
|
||
<h5 id="examples-87"><a href="#examples-87">Examples</a></h5>
|
||
<p>Cloning two elements from a slice into another:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>src = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>dst = [<span class="number">0</span>, <span class="number">0</span>];
|
||
|
||
<span class="comment">// Because the slices have to be the same length,
|
||
// we slice the source slice from four elements
|
||
// to two. It will panic if we don't do this.
|
||
</span>dst.clone_from_slice(<span class="kw-2">&</span>src[<span class="number">2</span>..]);
|
||
|
||
<span class="macro">assert_eq!</span>(src, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>]);
|
||
<span class="macro">assert_eq!</span>(dst, [<span class="number">3</span>, <span class="number">4</span>]);</code></pre></div>
|
||
<p>Rust enforces that there can only be one mutable reference with no
|
||
immutable references to a particular piece of data in a particular
|
||
scope. Because of this, attempting to use <code>clone_from_slice</code> on a
|
||
single slice will result in a compile failure:</p>
|
||
|
||
<div class="example-wrap compile_fail"><div class='tooltip'>ⓘ</div><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>slice = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>];
|
||
|
||
slice[..<span class="number">2</span>].clone_from_slice(<span class="kw-2">&</span>slice[<span class="number">3</span>..]); <span class="comment">// compile fail!</span></code></pre></div>
|
||
<p>To work around this, we can use <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_at_mut"><code>split_at_mut</code></a> to create two distinct
|
||
sub-slices from a slice:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>slice = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>];
|
||
|
||
{
|
||
<span class="kw">let </span>(left, right) = slice.split_at_mut(<span class="number">2</span>);
|
||
left.clone_from_slice(<span class="kw-2">&</span>right[<span class="number">1</span>..]);
|
||
}
|
||
|
||
<span class="macro">assert_eq!</span>(slice, [<span class="number">4</span>, <span class="number">5</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.copy_from_slice" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.9.0">1.9.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3268-3270">source</a></span><h4 class="code-header">pub fn <a href="#method.copy_from_slice" class="fnname">copy_from_slice</a>(&mut self, src: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)<span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Copy.html" title="trait core::marker::Copy">Copy</a>,</span></h4></section></summary><div class="docblock"><p>Copies all elements from <code>src</code> into <code>self</code>, using a memcpy.</p>
|
||
<p>The length of <code>src</code> must be the same as <code>self</code>.</p>
|
||
<p>If <code>T</code> does not implement <code>Copy</code>, use <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.clone_from_slice"><code>clone_from_slice</code></a>.</p>
|
||
<h5 id="panics-31"><a href="#panics-31">Panics</a></h5>
|
||
<p>This function will panic if the two slices have different lengths.</p>
|
||
<h5 id="examples-88"><a href="#examples-88">Examples</a></h5>
|
||
<p>Copying two elements from a slice into another:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>src = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>dst = [<span class="number">0</span>, <span class="number">0</span>];
|
||
|
||
<span class="comment">// Because the slices have to be the same length,
|
||
// we slice the source slice from four elements
|
||
// to two. It will panic if we don't do this.
|
||
</span>dst.copy_from_slice(<span class="kw-2">&</span>src[<span class="number">2</span>..]);
|
||
|
||
<span class="macro">assert_eq!</span>(src, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>]);
|
||
<span class="macro">assert_eq!</span>(dst, [<span class="number">3</span>, <span class="number">4</span>]);</code></pre></div>
|
||
<p>Rust enforces that there can only be one mutable reference with no
|
||
immutable references to a particular piece of data in a particular
|
||
scope. Because of this, attempting to use <code>copy_from_slice</code> on a
|
||
single slice will result in a compile failure:</p>
|
||
|
||
<div class="example-wrap compile_fail"><div class='tooltip'>ⓘ</div><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>slice = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>];
|
||
|
||
slice[..<span class="number">2</span>].copy_from_slice(<span class="kw-2">&</span>slice[<span class="number">3</span>..]); <span class="comment">// compile fail!</span></code></pre></div>
|
||
<p>To work around this, we can use <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_at_mut"><code>split_at_mut</code></a> to create two distinct
|
||
sub-slices from a slice:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>slice = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>];
|
||
|
||
{
|
||
<span class="kw">let </span>(left, right) = slice.split_at_mut(<span class="number">2</span>);
|
||
left.copy_from_slice(<span class="kw-2">&</span>right[<span class="number">1</span>..]);
|
||
}
|
||
|
||
<span class="macro">assert_eq!</span>(slice, [<span class="number">4</span>, <span class="number">5</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.copy_within" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.37.0">1.37.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3322-3324">source</a></span><h4 class="code-header">pub fn <a href="#method.copy_within" class="fnname">copy_within</a><R>(&mut self, src: R, dest: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>)<span class="where fmt-newline">where<br> R: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/range/trait.RangeBounds.html" title="trait core::ops::range::RangeBounds">RangeBounds</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>,<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Copy.html" title="trait core::marker::Copy">Copy</a>,</span></h4></section></summary><div class="docblock"><p>Copies elements from one part of the slice to another part of itself,
|
||
using a memmove.</p>
|
||
<p><code>src</code> is the range within <code>self</code> to copy from. <code>dest</code> is the starting
|
||
index of the range within <code>self</code> to copy to, which will have the same
|
||
length as <code>src</code>. The two ranges may overlap. The ends of the two ranges
|
||
must be less than or equal to <code>self.len()</code>.</p>
|
||
<h5 id="panics-32"><a href="#panics-32">Panics</a></h5>
|
||
<p>This function will panic if either range exceeds the end of the slice,
|
||
or if the end of <code>src</code> is before the start.</p>
|
||
<h5 id="examples-89"><a href="#examples-89">Examples</a></h5>
|
||
<p>Copying four bytes within a slice:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>bytes = <span class="kw-2">*</span><span class="string">b"Hello, World!"</span>;
|
||
|
||
bytes.copy_within(<span class="number">1</span>..<span class="number">5</span>, <span class="number">8</span>);
|
||
|
||
<span class="macro">assert_eq!</span>(<span class="kw-2">&</span>bytes, <span class="string">b"Hello, Wello!"</span>);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.swap_with_slice" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.27.0">1.27.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3389">source</a></span><h4 class="code-header">pub fn <a href="#method.swap_with_slice" class="fnname">swap_with_slice</a>(&mut self, other: &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)</h4></section></summary><div class="docblock"><p>Swaps all elements in <code>self</code> with those in <code>other</code>.</p>
|
||
<p>The length of <code>other</code> must be the same as <code>self</code>.</p>
|
||
<h5 id="panics-33"><a href="#panics-33">Panics</a></h5>
|
||
<p>This function will panic if the two slices have different lengths.</p>
|
||
<h5 id="example"><a href="#example">Example</a></h5>
|
||
<p>Swapping two elements across slices:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>slice1 = [<span class="number">0</span>, <span class="number">0</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>slice2 = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>];
|
||
|
||
slice1.swap_with_slice(<span class="kw-2">&mut </span>slice2[<span class="number">2</span>..]);
|
||
|
||
<span class="macro">assert_eq!</span>(slice1, [<span class="number">3</span>, <span class="number">4</span>]);
|
||
<span class="macro">assert_eq!</span>(slice2, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">0</span>, <span class="number">0</span>]);</code></pre></div>
|
||
<p>Rust enforces that there can only be one mutable reference to a
|
||
particular piece of data in a particular scope. Because of this,
|
||
attempting to use <code>swap_with_slice</code> on a single slice will result in
|
||
a compile failure:</p>
|
||
|
||
<div class="example-wrap compile_fail"><div class='tooltip'>ⓘ</div><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>slice = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>];
|
||
slice[..<span class="number">2</span>].swap_with_slice(<span class="kw-2">&mut </span>slice[<span class="number">3</span>..]); <span class="comment">// compile fail!</span></code></pre></div>
|
||
<p>To work around this, we can use <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_at_mut"><code>split_at_mut</code></a> to create two distinct
|
||
mutable sub-slices from a slice:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>slice = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>];
|
||
|
||
{
|
||
<span class="kw">let </span>(left, right) = slice.split_at_mut(<span class="number">2</span>);
|
||
left.swap_with_slice(<span class="kw-2">&mut </span>right[<span class="number">1</span>..]);
|
||
}
|
||
|
||
<span class="macro">assert_eq!</span>(slice, [<span class="number">4</span>, <span class="number">5</span>, <span class="number">3</span>, <span class="number">1</span>, <span class="number">2</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.align_to" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.30.0">1.30.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3499">source</a></span><h4 class="code-header">pub unsafe fn <a href="#method.align_to" class="fnname">align_to</a><U>(&self) -> (&<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[U]</a>, &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)</h4></section></summary><div class="docblock"><p>Transmute the slice to a slice of another type, ensuring alignment of the types is
|
||
maintained.</p>
|
||
<p>This method splits the slice into three distinct slices: prefix, correctly aligned middle
|
||
slice of a new type, and the suffix slice. The method may make the middle slice the greatest
|
||
length possible for a given type and input slice, but only your algorithm’s performance
|
||
should depend on that, not its correctness. It is permissible for all of the input data to
|
||
be returned as the prefix or suffix slice.</p>
|
||
<p>This method has no purpose when either input element <code>T</code> or output element <code>U</code> are
|
||
zero-sized and will return the original slice without splitting anything.</p>
|
||
<h5 id="safety-7"><a href="#safety-7">Safety</a></h5>
|
||
<p>This method is essentially a <code>transmute</code> with respect to the elements in the returned
|
||
middle slice, so all the usual caveats pertaining to <code>transmute::<T, U></code> also apply here.</p>
|
||
<h5 id="examples-90"><a href="#examples-90">Examples</a></h5>
|
||
<p>Basic usage:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">unsafe </span>{
|
||
<span class="kw">let </span>bytes: [u8; <span class="number">7</span>] = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">7</span>];
|
||
<span class="kw">let </span>(prefix, shorts, suffix) = bytes.align_to::<u16>();
|
||
<span class="comment">// less_efficient_algorithm_for_bytes(prefix);
|
||
// more_efficient_algorithm_for_aligned_shorts(shorts);
|
||
// less_efficient_algorithm_for_bytes(suffix);
|
||
</span>}</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.align_to_mut" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.30.0">1.30.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3560">source</a></span><h4 class="code-header">pub unsafe fn <a href="#method.align_to_mut" class="fnname">align_to_mut</a><U>(&mut self) -> (&mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[U]</a>, &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)</h4></section></summary><div class="docblock"><p>Transmute the mutable slice to a mutable slice of another type, ensuring alignment of the
|
||
types is maintained.</p>
|
||
<p>This method splits the slice into three distinct slices: prefix, correctly aligned middle
|
||
slice of a new type, and the suffix slice. The method may make the middle slice the greatest
|
||
length possible for a given type and input slice, but only your algorithm’s performance
|
||
should depend on that, not its correctness. It is permissible for all of the input data to
|
||
be returned as the prefix or suffix slice.</p>
|
||
<p>This method has no purpose when either input element <code>T</code> or output element <code>U</code> are
|
||
zero-sized and will return the original slice without splitting anything.</p>
|
||
<h5 id="safety-8"><a href="#safety-8">Safety</a></h5>
|
||
<p>This method is essentially a <code>transmute</code> with respect to the elements in the returned
|
||
middle slice, so all the usual caveats pertaining to <code>transmute::<T, U></code> also apply here.</p>
|
||
<h5 id="examples-91"><a href="#examples-91">Examples</a></h5>
|
||
<p>Basic usage:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">unsafe </span>{
|
||
<span class="kw">let </span><span class="kw-2">mut </span>bytes: [u8; <span class="number">7</span>] = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">7</span>];
|
||
<span class="kw">let </span>(prefix, shorts, suffix) = bytes.align_to_mut::<u16>();
|
||
<span class="comment">// less_efficient_algorithm_for_bytes(prefix);
|
||
// more_efficient_algorithm_for_aligned_shorts(shorts);
|
||
// less_efficient_algorithm_for_bytes(suffix);
|
||
</span>}</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.as_simd" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3655-3659">source</a><h4 class="code-header">pub fn <a href="#method.as_simd" class="fnname">as_simd</a><const LANES: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>(&self) -> (&<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, &[<a class="struct" href="https://doc.rust-lang.org/nightly/core/core_simd/vector/struct.Simd.html" title="struct core::core_simd::vector::Simd">Simd</a><T, LANES>], &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)<span class="where fmt-newline">where<br> <a class="struct" href="https://doc.rust-lang.org/nightly/core/core_simd/vector/struct.Simd.html" title="struct core::core_simd::vector::Simd">Simd</a><T, LANES>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.AsRef.html" title="trait core::convert::AsRef">AsRef</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.array.html">[T; LANES]</a>>,<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/core_simd/vector/trait.SimdElement.html" title="trait core::core_simd::vector::SimdElement">SimdElement</a>,<br> <a class="struct" href="https://doc.rust-lang.org/nightly/core/core_simd/lane_count/struct.LaneCount.html" title="struct core::core_simd::lane_count::LaneCount">LaneCount</a><LANES>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/core_simd/lane_count/trait.SupportedLaneCount.html" title="trait core::core_simd::lane_count::SupportedLaneCount">SupportedLaneCount</a>,</span></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>portable_simd</code>)</span></div></span></summary><div class="docblock"><p>Split a slice into a prefix, a middle of aligned SIMD types, and a suffix.</p>
|
||
<p>This is a safe wrapper around <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.align_to" title="slice::align_to"><code>slice::align_to</code></a>, so has the same weak
|
||
postconditions as that method. You’re only assured that
|
||
<code>self.len() == prefix.len() + middle.len() * LANES + suffix.len()</code>.</p>
|
||
<p>Notably, all of the following are possible:</p>
|
||
<ul>
|
||
<li><code>prefix.len() >= LANES</code>.</li>
|
||
<li><code>middle.is_empty()</code> despite <code>self.len() >= 3 * LANES</code>.</li>
|
||
<li><code>suffix.len() >= LANES</code>.</li>
|
||
</ul>
|
||
<p>That said, this is a safe method, so if you’re only writing safe code,
|
||
then this can at most cause incorrect logic, not unsoundness.</p>
|
||
<h5 id="panics-34"><a href="#panics-34">Panics</a></h5>
|
||
<p>This will panic if the size of the SIMD type is different from
|
||
<code>LANES</code> times that of the scalar.</p>
|
||
<p>At the time of writing, the trait restrictions on <code>Simd<T, LANES></code> keeps
|
||
that from ever happening, as only power-of-two numbers of lanes are
|
||
supported. It’s possible that, in the future, those restrictions might
|
||
be lifted in a way that would make it possible to see panics from this
|
||
method for something like <code>LANES == 3</code>.</p>
|
||
<h5 id="examples-92"><a href="#examples-92">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(portable_simd)]
|
||
</span><span class="kw">use </span>core::simd::SimdFloat;
|
||
|
||
<span class="kw">let </span>short = <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>];
|
||
<span class="kw">let </span>(prefix, middle, suffix) = short.as_simd::<<span class="number">4</span>>();
|
||
<span class="macro">assert_eq!</span>(middle, []); <span class="comment">// Not enough elements for anything in the middle
|
||
|
||
// They might be split in any possible way between prefix and suffix
|
||
</span><span class="kw">let </span>it = prefix.iter().chain(suffix).copied();
|
||
<span class="macro">assert_eq!</span>(it.collect::<Vec<<span class="kw">_</span>>>(), <span class="macro">vec!</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>]);
|
||
|
||
<span class="kw">fn </span>basic_simd_sum(x: <span class="kw-2">&</span>[f32]) -> f32 {
|
||
<span class="kw">use </span>std::ops::Add;
|
||
<span class="kw">use </span>std::simd::f32x4;
|
||
<span class="kw">let </span>(prefix, middle, suffix) = x.as_simd();
|
||
<span class="kw">let </span>sums = f32x4::from_array([
|
||
prefix.iter().copied().sum(),
|
||
<span class="number">0.0</span>,
|
||
<span class="number">0.0</span>,
|
||
suffix.iter().copied().sum(),
|
||
]);
|
||
<span class="kw">let </span>sums = middle.iter().copied().fold(sums, f32x4::add);
|
||
sums.reduce_sum()
|
||
}
|
||
|
||
<span class="kw">let </span>numbers: Vec<f32> = (<span class="number">1</span>..<span class="number">101</span>).map(|x| x <span class="kw">as _</span>).collect();
|
||
<span class="macro">assert_eq!</span>(basic_simd_sum(<span class="kw-2">&</span>numbers[<span class="number">1</span>..<span class="number">99</span>]), <span class="number">4949.0</span>);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.as_simd_mut" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3700-3704">source</a><h4 class="code-header">pub fn <a href="#method.as_simd_mut" class="fnname">as_simd_mut</a><const LANES: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>(<br> &mut self<br>) -> (&mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, &mut [<a class="struct" href="https://doc.rust-lang.org/nightly/core/core_simd/vector/struct.Simd.html" title="struct core::core_simd::vector::Simd">Simd</a><T, LANES>], &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>)<span class="where fmt-newline">where<br> <a class="struct" href="https://doc.rust-lang.org/nightly/core/core_simd/vector/struct.Simd.html" title="struct core::core_simd::vector::Simd">Simd</a><T, LANES>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.AsMut.html" title="trait core::convert::AsMut">AsMut</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.array.html">[T; LANES]</a>>,<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/core_simd/vector/trait.SimdElement.html" title="trait core::core_simd::vector::SimdElement">SimdElement</a>,<br> <a class="struct" href="https://doc.rust-lang.org/nightly/core/core_simd/lane_count/struct.LaneCount.html" title="struct core::core_simd::lane_count::LaneCount">LaneCount</a><LANES>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/core_simd/lane_count/trait.SupportedLaneCount.html" title="trait core::core_simd::lane_count::SupportedLaneCount">SupportedLaneCount</a>,</span></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>portable_simd</code>)</span></div></span></summary><div class="docblock"><p>Split a mutable slice into a mutable prefix, a middle of aligned SIMD types,
|
||
and a mutable suffix.</p>
|
||
<p>This is a safe wrapper around <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.align_to_mut" title="slice::align_to_mut"><code>slice::align_to_mut</code></a>, so has the same weak
|
||
postconditions as that method. You’re only assured that
|
||
<code>self.len() == prefix.len() + middle.len() * LANES + suffix.len()</code>.</p>
|
||
<p>Notably, all of the following are possible:</p>
|
||
<ul>
|
||
<li><code>prefix.len() >= LANES</code>.</li>
|
||
<li><code>middle.is_empty()</code> despite <code>self.len() >= 3 * LANES</code>.</li>
|
||
<li><code>suffix.len() >= LANES</code>.</li>
|
||
</ul>
|
||
<p>That said, this is a safe method, so if you’re only writing safe code,
|
||
then this can at most cause incorrect logic, not unsoundness.</p>
|
||
<p>This is the mutable version of <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.as_simd" title="slice::as_simd"><code>slice::as_simd</code></a>; see that for examples.</p>
|
||
<h5 id="panics-35"><a href="#panics-35">Panics</a></h5>
|
||
<p>This will panic if the size of the SIMD type is different from
|
||
<code>LANES</code> times that of the scalar.</p>
|
||
<p>At the time of writing, the trait restrictions on <code>Simd<T, LANES></code> keeps
|
||
that from ever happening, as only power-of-two numbers of lanes are
|
||
supported. It’s possible that, in the future, those restrictions might
|
||
be lifted in a way that would make it possible to see panics from this
|
||
method for something like <code>LANES == 3</code>.</p>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.is_sorted" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3740-3742">source</a><h4 class="code-header">pub fn <a href="#method.is_sorted" class="fnname">is_sorted</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a><span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html" title="trait core::cmp::PartialOrd">PartialOrd</a><T>,</span></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>is_sorted</code>)</span></div></span></summary><div class="docblock"><p>Checks if the elements of this slice are sorted.</p>
|
||
<p>That is, for each element <code>a</code> and its following element <code>b</code>, <code>a <= b</code> must hold. If the
|
||
slice yields exactly zero or one element, <code>true</code> is returned.</p>
|
||
<p>Note that if <code>Self::Item</code> is only <code>PartialOrd</code>, but not <code>Ord</code>, the above definition
|
||
implies that this function returns <code>false</code> if any two consecutive items are not
|
||
comparable.</p>
|
||
<h5 id="examples-93"><a href="#examples-93">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(is_sorted)]
|
||
</span><span class="kw">let </span>empty: [i32; <span class="number">0</span>] = [];
|
||
|
||
<span class="macro">assert!</span>([<span class="number">1</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">9</span>].is_sorted());
|
||
<span class="macro">assert!</span>(![<span class="number">1</span>, <span class="number">3</span>, <span class="number">2</span>, <span class="number">4</span>].is_sorted());
|
||
<span class="macro">assert!</span>([<span class="number">0</span>].is_sorted());
|
||
<span class="macro">assert!</span>(empty.is_sorted());
|
||
<span class="macro">assert!</span>(![<span class="number">0.0</span>, <span class="number">1.0</span>, f32::NAN].is_sorted());</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.is_sorted_by" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3756-3758">source</a><h4 class="code-header">pub fn <a href="#method.is_sorted_by" class="fnname">is_sorted_by</a><'a, F>(&'a self, compare: F) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a </a>T, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a </a>T) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering">Ordering</a>>,</span></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>is_sorted</code>)</span></div></span></summary><div class="docblock"><p>Checks if the elements of this slice are sorted using the given comparator function.</p>
|
||
<p>Instead of using <code>PartialOrd::partial_cmp</code>, this function uses the given <code>compare</code>
|
||
function to determine the ordering of two elements. Apart from that, it’s equivalent to
|
||
<a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.is_sorted"><code>is_sorted</code></a>; see its documentation for more information.</p>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.is_sorted_by_key" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3782-3785">source</a><h4 class="code-header">pub fn <a href="#method.is_sorted_by_key" class="fnname">is_sorted_by_key</a><'a, F, K>(&'a self, f: F) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a </a>T) -> K,<br> K: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html" title="trait core::cmp::PartialOrd">PartialOrd</a><K>,</span></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>is_sorted</code>)</span></div></span></summary><div class="docblock"><p>Checks if the elements of this slice are sorted using the given key extraction function.</p>
|
||
<p>Instead of comparing the slice’s elements directly, this function compares the keys of the
|
||
elements, as determined by <code>f</code>. Apart from that, it’s equivalent to <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.is_sorted"><code>is_sorted</code></a>; see its
|
||
documentation for more information.</p>
|
||
<h5 id="examples-94"><a href="#examples-94">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(is_sorted)]
|
||
|
||
</span><span class="macro">assert!</span>([<span class="string">"c"</span>, <span class="string">"bb"</span>, <span class="string">"aaa"</span>].is_sorted_by_key(|s| s.len()));
|
||
<span class="macro">assert!</span>(![-<span class="number">2i32</span>, -<span class="number">1</span>, <span class="number">0</span>, <span class="number">3</span>].is_sorted_by_key(|n| n.abs()));</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.partition_point" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.52.0">1.52.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3841-3843">source</a></span><h4 class="code-header">pub fn <a href="#method.partition_point" class="fnname">partition_point</a><P>(&self, pred: P) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a><span class="where fmt-newline">where<br> P: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,</span></h4></section></summary><div class="docblock"><p>Returns the index of the partition point according to the given predicate
|
||
(the index of the first element of the second partition).</p>
|
||
<p>The slice is assumed to be partitioned according to the given predicate.
|
||
This means that all elements for which the predicate returns true are at the start of the slice
|
||
and all elements for which the predicate returns false are at the end.
|
||
For example, [7, 15, 3, 5, 4, 12, 6] is a partitioned under the predicate x % 2 != 0
|
||
(all odd numbers are at the start, all even at the end).</p>
|
||
<p>If this slice is not partitioned, the returned result is unspecified and meaningless,
|
||
as this method performs a kind of binary search.</p>
|
||
<p>See also <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.binary_search"><code>binary_search</code></a>, <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.binary_search_by"><code>binary_search_by</code></a>, and <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.binary_search_by_key"><code>binary_search_by_key</code></a>.</p>
|
||
<h5 id="examples-95"><a href="#examples-95">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">7</span>];
|
||
<span class="kw">let </span>i = v.partition_point(|<span class="kw-2">&</span>x| x < <span class="number">5</span>);
|
||
|
||
<span class="macro">assert_eq!</span>(i, <span class="number">4</span>);
|
||
<span class="macro">assert!</span>(v[..i].iter().all(|<span class="kw-2">&</span>x| x < <span class="number">5</span>));
|
||
<span class="macro">assert!</span>(v[i..].iter().all(|<span class="kw-2">&</span>x| !(x < <span class="number">5</span>)));</code></pre></div>
|
||
<p>If all elements of the slice match the predicate, including if the slice
|
||
is empty, then the length of the slice will be returned:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>a = [<span class="number">2</span>, <span class="number">4</span>, <span class="number">8</span>];
|
||
<span class="macro">assert_eq!</span>(a.partition_point(|x| x < <span class="kw-2">&</span><span class="number">100</span>), a.len());
|
||
<span class="kw">let </span>a: [i32; <span class="number">0</span>] = [];
|
||
<span class="macro">assert_eq!</span>(a.partition_point(|x| x < <span class="kw-2">&</span><span class="number">100</span>), <span class="number">0</span>);</code></pre></div>
|
||
<p>If you want to insert an item to a sorted vector, while maintaining
|
||
sort order:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>s = <span class="macro">vec!</span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>, <span class="number">13</span>, <span class="number">21</span>, <span class="number">34</span>, <span class="number">55</span>];
|
||
<span class="kw">let </span>num = <span class="number">42</span>;
|
||
<span class="kw">let </span>idx = s.partition_point(|<span class="kw-2">&</span>x| x < num);
|
||
s.insert(idx, num);
|
||
<span class="macro">assert_eq!</span>(s, [<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>, <span class="number">13</span>, <span class="number">21</span>, <span class="number">34</span>, <span class="number">42</span>, <span class="number">55</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.take" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3899">source</a><h4 class="code-header">pub fn <a href="#method.take" class="fnname">take</a><R, 'a>(self: &mut &'a <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, range: R) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&'a <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>><span class="where fmt-newline">where<br> R: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/range/trait.OneSidedRange.html" title="trait core::ops::range::OneSidedRange">OneSidedRange</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>,</span></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_take</code>)</span></div></span></summary><div class="docblock"><p>Removes the subslice corresponding to the given range
|
||
and returns a reference to it.</p>
|
||
<p>Returns <code>None</code> and does not modify the slice if the given
|
||
range is out of bounds.</p>
|
||
<p>Note that this method only accepts one-sided ranges such as
|
||
<code>2..</code> or <code>..6</code>, but not <code>2..6</code>.</p>
|
||
<h5 id="examples-96"><a href="#examples-96">Examples</a></h5>
|
||
<p>Taking the first three elements of a slice:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_take)]
|
||
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>slice: <span class="kw-2">&</span>[<span class="kw">_</span>] = <span class="kw-2">&</span>[<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>, <span class="string">'d'</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>first_three = slice.take(..<span class="number">3</span>).unwrap();
|
||
|
||
<span class="macro">assert_eq!</span>(slice, <span class="kw-2">&</span>[<span class="string">'d'</span>]);
|
||
<span class="macro">assert_eq!</span>(first_three, <span class="kw-2">&</span>[<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>]);</code></pre></div>
|
||
<p>Taking the last two elements of a slice:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_take)]
|
||
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>slice: <span class="kw-2">&</span>[<span class="kw">_</span>] = <span class="kw-2">&</span>[<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>, <span class="string">'d'</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>tail = slice.take(<span class="number">2</span>..).unwrap();
|
||
|
||
<span class="macro">assert_eq!</span>(slice, <span class="kw-2">&</span>[<span class="string">'a'</span>, <span class="string">'b'</span>]);
|
||
<span class="macro">assert_eq!</span>(tail, <span class="kw-2">&</span>[<span class="string">'c'</span>, <span class="string">'d'</span>]);</code></pre></div>
|
||
<p>Getting <code>None</code> when <code>range</code> is out of bounds:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_take)]
|
||
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>slice: <span class="kw-2">&</span>[<span class="kw">_</span>] = <span class="kw-2">&</span>[<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>, <span class="string">'d'</span>];
|
||
|
||
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, slice.take(<span class="number">5</span>..));
|
||
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, slice.take(..<span class="number">5</span>));
|
||
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, slice.take(..=<span class="number">4</span>));
|
||
<span class="kw">let </span>expected: <span class="kw-2">&</span>[char] = <span class="kw-2">&</span>[<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>, <span class="string">'d'</span>];
|
||
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(expected), slice.take(..<span class="number">4</span>));</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.take_mut" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#3968-3971">source</a><h4 class="code-header">pub fn <a href="#method.take_mut" class="fnname">take_mut</a><R, 'a>(self: &mut &'a mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>, range: R) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&'a mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>><span class="where fmt-newline">where<br> R: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/range/trait.OneSidedRange.html" title="trait core::ops::range::OneSidedRange">OneSidedRange</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>,</span></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_take</code>)</span></div></span></summary><div class="docblock"><p>Removes the subslice corresponding to the given range
|
||
and returns a mutable reference to it.</p>
|
||
<p>Returns <code>None</code> and does not modify the slice if the given
|
||
range is out of bounds.</p>
|
||
<p>Note that this method only accepts one-sided ranges such as
|
||
<code>2..</code> or <code>..6</code>, but not <code>2..6</code>.</p>
|
||
<h5 id="examples-97"><a href="#examples-97">Examples</a></h5>
|
||
<p>Taking the first three elements of a slice:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_take)]
|
||
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>slice: <span class="kw-2">&mut </span>[<span class="kw">_</span>] = <span class="kw-2">&mut </span>[<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>, <span class="string">'d'</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>first_three = slice.take_mut(..<span class="number">3</span>).unwrap();
|
||
|
||
<span class="macro">assert_eq!</span>(slice, <span class="kw-2">&mut </span>[<span class="string">'d'</span>]);
|
||
<span class="macro">assert_eq!</span>(first_three, <span class="kw-2">&mut </span>[<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>]);</code></pre></div>
|
||
<p>Taking the last two elements of a slice:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_take)]
|
||
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>slice: <span class="kw-2">&mut </span>[<span class="kw">_</span>] = <span class="kw-2">&mut </span>[<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>, <span class="string">'d'</span>];
|
||
<span class="kw">let </span><span class="kw-2">mut </span>tail = slice.take_mut(<span class="number">2</span>..).unwrap();
|
||
|
||
<span class="macro">assert_eq!</span>(slice, <span class="kw-2">&mut </span>[<span class="string">'a'</span>, <span class="string">'b'</span>]);
|
||
<span class="macro">assert_eq!</span>(tail, <span class="kw-2">&mut </span>[<span class="string">'c'</span>, <span class="string">'d'</span>]);</code></pre></div>
|
||
<p>Getting <code>None</code> when <code>range</code> is out of bounds:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_take)]
|
||
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>slice: <span class="kw-2">&mut </span>[<span class="kw">_</span>] = <span class="kw-2">&mut </span>[<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>, <span class="string">'d'</span>];
|
||
|
||
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, slice.take_mut(<span class="number">5</span>..));
|
||
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, slice.take_mut(..<span class="number">5</span>));
|
||
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, slice.take_mut(..=<span class="number">4</span>));
|
||
<span class="kw">let </span>expected: <span class="kw-2">&mut </span>[<span class="kw">_</span>] = <span class="kw-2">&mut </span>[<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>, <span class="string">'d'</span>];
|
||
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(expected), slice.take_mut(..<span class="number">4</span>));</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.take_first" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#4007">source</a><h4 class="code-header">pub fn <a href="#method.take_first" class="fnname">take_first</a><'a>(self: &mut &'a <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a </a>T></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_take</code>)</span></div></span></summary><div class="docblock"><p>Removes the first element of the slice and returns a reference
|
||
to it.</p>
|
||
<p>Returns <code>None</code> if the slice is empty.</p>
|
||
<h5 id="examples-98"><a href="#examples-98">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_take)]
|
||
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>slice: <span class="kw-2">&</span>[<span class="kw">_</span>] = <span class="kw-2">&</span>[<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>];
|
||
<span class="kw">let </span>first = slice.take_first().unwrap();
|
||
|
||
<span class="macro">assert_eq!</span>(slice, <span class="kw-2">&</span>[<span class="string">'b'</span>, <span class="string">'c'</span>]);
|
||
<span class="macro">assert_eq!</span>(first, <span class="kw-2">&</span><span class="string">'a'</span>);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.take_first_mut" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#4032">source</a><h4 class="code-header">pub fn <a href="#method.take_first_mut" class="fnname">take_first_mut</a><'a>(self: &mut &'a mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>T></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_take</code>)</span></div></span></summary><div class="docblock"><p>Removes the first element of the slice and returns a mutable
|
||
reference to it.</p>
|
||
<p>Returns <code>None</code> if the slice is empty.</p>
|
||
<h5 id="examples-99"><a href="#examples-99">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_take)]
|
||
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>slice: <span class="kw-2">&mut </span>[<span class="kw">_</span>] = <span class="kw-2">&mut </span>[<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>];
|
||
<span class="kw">let </span>first = slice.take_first_mut().unwrap();
|
||
<span class="kw-2">*</span>first = <span class="string">'d'</span>;
|
||
|
||
<span class="macro">assert_eq!</span>(slice, <span class="kw-2">&</span>[<span class="string">'b'</span>, <span class="string">'c'</span>]);
|
||
<span class="macro">assert_eq!</span>(first, <span class="kw-2">&</span><span class="string">'d'</span>);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.take_last" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#4056">source</a><h4 class="code-header">pub fn <a href="#method.take_last" class="fnname">take_last</a><'a>(self: &mut &'a <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a </a>T></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_take</code>)</span></div></span></summary><div class="docblock"><p>Removes the last element of the slice and returns a reference
|
||
to it.</p>
|
||
<p>Returns <code>None</code> if the slice is empty.</p>
|
||
<h5 id="examples-100"><a href="#examples-100">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_take)]
|
||
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>slice: <span class="kw-2">&</span>[<span class="kw">_</span>] = <span class="kw-2">&</span>[<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>];
|
||
<span class="kw">let </span>last = slice.take_last().unwrap();
|
||
|
||
<span class="macro">assert_eq!</span>(slice, <span class="kw-2">&</span>[<span class="string">'a'</span>, <span class="string">'b'</span>]);
|
||
<span class="macro">assert_eq!</span>(last, <span class="kw-2">&</span><span class="string">'c'</span>);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.take_last_mut" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#4081">source</a><h4 class="code-header">pub fn <a href="#method.take_last_mut" class="fnname">take_last_mut</a><'a>(self: &mut &'a mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>T></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_take</code>)</span></div></span></summary><div class="docblock"><p>Removes the last element of the slice and returns a mutable
|
||
reference to it.</p>
|
||
<p>Returns <code>None</code> if the slice is empty.</p>
|
||
<h5 id="examples-101"><a href="#examples-101">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_take)]
|
||
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>slice: <span class="kw-2">&mut </span>[<span class="kw">_</span>] = <span class="kw-2">&mut </span>[<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>];
|
||
<span class="kw">let </span>last = slice.take_last_mut().unwrap();
|
||
<span class="kw-2">*</span>last = <span class="string">'d'</span>;
|
||
|
||
<span class="macro">assert_eq!</span>(slice, <span class="kw-2">&</span>[<span class="string">'a'</span>, <span class="string">'b'</span>]);
|
||
<span class="macro">assert_eq!</span>(last, <span class="kw-2">&</span><span class="string">'d'</span>);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.get_many_unchecked_mut" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#4115-4118">source</a><h4 class="code-header">pub unsafe fn <a href="#method.get_many_unchecked_mut" class="fnname">get_many_unchecked_mut</a><const N: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>(<br> &mut self,<br> indices: [<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.array.html">N</a>]<br>) -> [<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.array.html">N</a>]</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>get_many_mut</code>)</span></div></span></summary><div class="docblock"><p>Returns mutable references to many indices at once, without doing any checks.</p>
|
||
<p>For a safe alternative see <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.get_many_mut"><code>get_many_mut</code></a>.</p>
|
||
<h5 id="safety-9"><a href="#safety-9">Safety</a></h5>
|
||
<p>Calling this method with overlapping or out-of-bounds indices is <em><a href="https://doc.rust-lang.org/reference/behavior-considered-undefined.html">undefined behavior</a></em>
|
||
even if the resulting references are not used.</p>
|
||
<h5 id="examples-102"><a href="#examples-102">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(get_many_mut)]
|
||
|
||
</span><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">4</span>];
|
||
|
||
<span class="kw">unsafe </span>{
|
||
<span class="kw">let </span>[a, b] = x.get_many_unchecked_mut([<span class="number">0</span>, <span class="number">2</span>]);
|
||
<span class="kw-2">*</span>a <span class="kw-2">*</span>= <span class="number">10</span>;
|
||
<span class="kw-2">*</span>b <span class="kw-2">*</span>= <span class="number">100</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">2</span>, <span class="number">400</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.get_many_mut" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#4157-4160">source</a><h4 class="code-header">pub fn <a href="#method.get_many_mut" class="fnname">get_many_mut</a><const N: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>(<br> &mut self,<br> indices: [<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.array.html">N</a>]<br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><[<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.array.html">N</a>], <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/struct.GetManyMutError.html" title="struct core::slice::GetManyMutError">GetManyMutError</a><N>></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>get_many_mut</code>)</span></div></span></summary><div class="docblock"><p>Returns mutable references to many indices at once.</p>
|
||
<p>Returns an error if any index is out-of-bounds, or if the same index was
|
||
passed more than once.</p>
|
||
<h5 id="examples-103"><a href="#examples-103">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(get_many_mut)]
|
||
|
||
</span><span class="kw">let </span>v = <span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>];
|
||
<span class="kw">if let </span><span class="prelude-val">Ok</span>([a, b]) = v.get_many_mut([<span class="number">0</span>, <span class="number">2</span>]) {
|
||
<span class="kw-2">*</span>a = <span class="number">413</span>;
|
||
<span class="kw-2">*</span>b = <span class="number">612</span>;
|
||
}
|
||
<span class="macro">assert_eq!</span>(v, <span class="kw-2">&</span>[<span class="number">413</span>, <span class="number">2</span>, <span class="number">612</span>]);</code></pre></div>
|
||
</div></details></div><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.sort_floats-1" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/slice/mod.rs.html#4275">source</a><h4 class="code-header">pub fn <a href="#method.sort_floats-1" class="fnname">sort_floats</a>(&mut self)</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>sort_floats</code>)</span></div></span></summary><div class="docblock"><p>Sorts the slice of floats.</p>
|
||
<p>This sort is in-place (i.e. does not allocate), <em>O</em>(<em>n</em> * log(<em>n</em>)) worst-case, and uses
|
||
the ordering defined by <a href="https://doc.rust-lang.org/nightly/std/primitive.f32.html#method.total_cmp" title="f32::total_cmp"><code>f32::total_cmp</code></a>.</p>
|
||
<h5 id="current-implementation-7"><a href="#current-implementation-7">Current implementation</a></h5>
|
||
<p>This uses the same sorting algorithm as <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.sort_unstable_by"><code>sort_unstable_by</code></a>.</p>
|
||
<h5 id="examples-104"><a href="#examples-104">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(sort_floats)]
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="number">2.6</span>, -<span class="number">5e-8</span>, f32::NAN, <span class="number">8.29</span>, f32::INFINITY, -<span class="number">1.0</span>, <span class="number">0.0</span>, -f32::INFINITY, -<span class="number">0.0</span>];
|
||
|
||
v.sort_floats();
|
||
<span class="kw">let </span>sorted = [-f32::INFINITY, -<span class="number">1.0</span>, -<span class="number">5e-8</span>, -<span class="number">0.0</span>, <span class="number">0.0</span>, <span class="number">2.6</span>, <span class="number">8.29</span>, f32::INFINITY, f32::NAN];
|
||
<span class="macro">assert_eq!</span>(<span class="kw-2">&</span>v[..<span class="number">8</span>], <span class="kw-2">&</span>sorted[..<span class="number">8</span>]);
|
||
<span class="macro">assert!</span>(v[<span class="number">8</span>].is_nan());</code></pre></div>
|
||
</div></details></div><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.sort" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/alloc/slice.rs.html#202-204">source</a></span><h4 class="code-header">pub fn <a href="#method.sort" class="fnname">sort</a>(&mut self)<span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html" title="trait core::cmp::Ord">Ord</a>,</span></h4></section></summary><div class="docblock"><p>Sorts the slice.</p>
|
||
<p>This sort is stable (i.e., does not reorder equal elements) and <em>O</em>(<em>n</em> * log(<em>n</em>)) worst-case.</p>
|
||
<p>When applicable, unstable sorting is preferred because it is generally faster than stable
|
||
sorting and it doesn’t allocate auxiliary memory.
|
||
See <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.sort_unstable"><code>sort_unstable</code></a>.</p>
|
||
<h5 id="current-implementation-8"><a href="#current-implementation-8">Current implementation</a></h5>
|
||
<p>The current algorithm is an adaptive, iterative merge sort inspired by
|
||
<a href="https://en.wikipedia.org/wiki/Timsort">timsort</a>.
|
||
It is designed to be very fast in cases where the slice is nearly sorted, or consists of
|
||
two or more sorted sequences concatenated one after another.</p>
|
||
<p>Also, it allocates temporary storage half the size of <code>self</code>, but for short slices a
|
||
non-allocating insertion sort is used instead.</p>
|
||
<h5 id="examples-105"><a href="#examples-105">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [-<span class="number">5</span>, <span class="number">4</span>, <span class="number">1</span>, -<span class="number">3</span>, <span class="number">2</span>];
|
||
|
||
v.sort();
|
||
<span class="macro">assert!</span>(v == [-<span class="number">5</span>, -<span class="number">3</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">4</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.sort_by" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/alloc/slice.rs.html#258-260">source</a></span><h4 class="code-header">pub fn <a href="#method.sort_by" class="fnname">sort_by</a><F>(&mut self, compare: F)<span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering">Ordering</a>,</span></h4></section></summary><div class="docblock"><p>Sorts the slice with a comparator function.</p>
|
||
<p>This sort is stable (i.e., does not reorder equal elements) and <em>O</em>(<em>n</em> * log(<em>n</em>)) worst-case.</p>
|
||
<p>The comparator function must define a total ordering for the elements in the slice. If
|
||
the ordering is not total, the order of the elements is unspecified. An order is a
|
||
total order if it is (for all <code>a</code>, <code>b</code> and <code>c</code>):</p>
|
||
<ul>
|
||
<li>total and antisymmetric: exactly one of <code>a < b</code>, <code>a == b</code> or <code>a > b</code> is true, and</li>
|
||
<li>transitive, <code>a < b</code> and <code>b < c</code> implies <code>a < c</code>. The same must hold for both <code>==</code> and <code>></code>.</li>
|
||
</ul>
|
||
<p>For example, while <a href="https://doc.rust-lang.org/nightly/std/primitive.f64.html" title="f64"><code>f64</code></a> doesn’t implement <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html" title="Ord"><code>Ord</code></a> because <code>NaN != NaN</code>, we can use
|
||
<code>partial_cmp</code> as our sort function when we know the slice doesn’t contain a <code>NaN</code>.</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>floats = [<span class="number">5f64</span>, <span class="number">4.0</span>, <span class="number">1.0</span>, <span class="number">3.0</span>, <span class="number">2.0</span>];
|
||
floats.sort_by(|a, b| a.partial_cmp(b).unwrap());
|
||
<span class="macro">assert_eq!</span>(floats, [<span class="number">1.0</span>, <span class="number">2.0</span>, <span class="number">3.0</span>, <span class="number">4.0</span>, <span class="number">5.0</span>]);</code></pre></div>
|
||
<p>When applicable, unstable sorting is preferred because it is generally faster than stable
|
||
sorting and it doesn’t allocate auxiliary memory.
|
||
See <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.sort_unstable_by"><code>sort_unstable_by</code></a>.</p>
|
||
<h5 id="current-implementation-9"><a href="#current-implementation-9">Current implementation</a></h5>
|
||
<p>The current algorithm is an adaptive, iterative merge sort inspired by
|
||
<a href="https://en.wikipedia.org/wiki/Timsort">timsort</a>.
|
||
It is designed to be very fast in cases where the slice is nearly sorted, or consists of
|
||
two or more sorted sequences concatenated one after another.</p>
|
||
<p>Also, it allocates temporary storage half the size of <code>self</code>, but for short slices a
|
||
non-allocating insertion sort is used instead.</p>
|
||
<h5 id="examples-106"><a href="#examples-106">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="number">5</span>, <span class="number">4</span>, <span class="number">1</span>, <span class="number">3</span>, <span class="number">2</span>];
|
||
v.sort_by(|a, b| a.cmp(b));
|
||
<span class="macro">assert!</span>(v == [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>]);
|
||
|
||
<span class="comment">// reverse sorting
|
||
</span>v.sort_by(|a, b| b.cmp(a));
|
||
<span class="macro">assert!</span>(v == [<span class="number">5</span>, <span class="number">4</span>, <span class="number">3</span>, <span class="number">2</span>, <span class="number">1</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.sort_by_key" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.7.0">1.7.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/alloc/slice.rs.html#300-303">source</a></span><h4 class="code-header">pub fn <a href="#method.sort_by_key" class="fnname">sort_by_key</a><K, F>(&mut self, f: F)<span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> K,<br> K: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html" title="trait core::cmp::Ord">Ord</a>,</span></h4></section></summary><div class="docblock"><p>Sorts the slice with a key extraction function.</p>
|
||
<p>This sort is stable (i.e., does not reorder equal elements) and <em>O</em>(<em>m</em> * <em>n</em> * log(<em>n</em>))
|
||
worst-case, where the key function is <em>O</em>(<em>m</em>).</p>
|
||
<p>For expensive key functions (e.g. functions that are not simple property accesses or
|
||
basic operations), <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.sort_by_cached_key"><code>sort_by_cached_key</code></a> is likely to be
|
||
significantly faster, as it does not recompute element keys.</p>
|
||
<p>When applicable, unstable sorting is preferred because it is generally faster than stable
|
||
sorting and it doesn’t allocate auxiliary memory.
|
||
See <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.sort_unstable_by_key"><code>sort_unstable_by_key</code></a>.</p>
|
||
<h5 id="current-implementation-10"><a href="#current-implementation-10">Current implementation</a></h5>
|
||
<p>The current algorithm is an adaptive, iterative merge sort inspired by
|
||
<a href="https://en.wikipedia.org/wiki/Timsort">timsort</a>.
|
||
It is designed to be very fast in cases where the slice is nearly sorted, or consists of
|
||
two or more sorted sequences concatenated one after another.</p>
|
||
<p>Also, it allocates temporary storage half the size of <code>self</code>, but for short slices a
|
||
non-allocating insertion sort is used instead.</p>
|
||
<h5 id="examples-107"><a href="#examples-107">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [-<span class="number">5i32</span>, <span class="number">4</span>, <span class="number">1</span>, -<span class="number">3</span>, <span class="number">2</span>];
|
||
|
||
v.sort_by_key(|k| k.abs());
|
||
<span class="macro">assert!</span>(v == [<span class="number">1</span>, <span class="number">2</span>, -<span class="number">3</span>, <span class="number">4</span>, -<span class="number">5</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.sort_by_cached_key" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.34.0">1.34.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/alloc/slice.rs.html#347-350">source</a></span><h4 class="code-header">pub fn <a href="#method.sort_by_cached_key" class="fnname">sort_by_cached_key</a><K, F>(&mut self, f: F)<span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> K,<br> K: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html" title="trait core::cmp::Ord">Ord</a>,</span></h4></section></summary><div class="docblock"><p>Sorts the slice with a key extraction function.</p>
|
||
<p>During sorting, the key function is called at most once per element, by using
|
||
temporary storage to remember the results of key evaluation.
|
||
The order of calls to the key function is unspecified and may change in future versions
|
||
of the standard library.</p>
|
||
<p>This sort is stable (i.e., does not reorder equal elements) and <em>O</em>(<em>m</em> * <em>n</em> + <em>n</em> * log(<em>n</em>))
|
||
worst-case, where the key function is <em>O</em>(<em>m</em>).</p>
|
||
<p>For simple key functions (e.g., functions that are property accesses or
|
||
basic operations), <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.sort_by_key"><code>sort_by_key</code></a> is likely to be
|
||
faster.</p>
|
||
<h5 id="current-implementation-11"><a href="#current-implementation-11">Current implementation</a></h5>
|
||
<p>The current algorithm is based on <a href="https://github.com/orlp/pdqsort">pattern-defeating quicksort</a> by Orson Peters,
|
||
which combines the fast average case of randomized quicksort with the fast worst case of
|
||
heapsort, while achieving linear time on slices with certain patterns. It uses some
|
||
randomization to avoid degenerate cases, but with a fixed seed to always provide
|
||
deterministic behavior.</p>
|
||
<p>In the worst case, the algorithm allocates temporary storage in a <code>Vec<(K, usize)></code> the
|
||
length of the slice.</p>
|
||
<h5 id="examples-108"><a href="#examples-108">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [-<span class="number">5i32</span>, <span class="number">4</span>, <span class="number">32</span>, -<span class="number">3</span>, <span class="number">2</span>];
|
||
|
||
v.sort_by_cached_key(|k| k.to_string());
|
||
<span class="macro">assert!</span>(v == [-<span class="number">3</span>, -<span class="number">5</span>, <span class="number">2</span>, <span class="number">32</span>, <span class="number">4</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_vec" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/alloc/slice.rs.html#407-409">source</a></span><h4 class="code-header">pub fn <a href="#method.to_vec" class="fnname">to_vec</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><T, <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/alloc/struct.Global.html" title="struct alloc::alloc::Global">Global</a>> <a href="#" class="notable-traits" data-ty="Vec<T, Global>">ⓘ</a><span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</span></h4></section></summary><div class="docblock"><p>Copies <code>self</code> into a new <code>Vec</code>.</p>
|
||
<h5 id="examples-109"><a href="#examples-109">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>s = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>];
|
||
<span class="kw">let </span>x = s.to_vec();
|
||
<span class="comment">// Here, `s` and `x` can be modified independently.</span></code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_vec_in" class="method has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/alloc/slice.rs.html#431-433">source</a><h4 class="code-header">pub fn <a href="#method.to_vec_in" class="fnname">to_vec_in</a><A>(&self, alloc: A) -> <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><T, A> <a href="#" class="notable-traits" data-ty="Vec<T, A>">ⓘ</a><span class="where fmt-newline">where<br> A: <a class="trait" href="https://doc.rust-lang.org/nightly/core/alloc/trait.Allocator.html" title="trait core::alloc::Allocator">Allocator</a>,<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</span></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>allocator_api</code>)</span></div></span></summary><div class="docblock"><p>Copies <code>self</code> into a new <code>Vec</code> with an allocator.</p>
|
||
<h5 id="examples-110"><a href="#examples-110">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(allocator_api)]
|
||
|
||
</span><span class="kw">use </span>std::alloc::System;
|
||
|
||
<span class="kw">let </span>s = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>];
|
||
<span class="kw">let </span>x = s.to_vec_in(System);
|
||
<span class="comment">// Here, `s` and `x` can be modified independently.</span></code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.repeat" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.40.0">1.40.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/alloc/slice.rs.html#484-486">source</a></span><h4 class="code-header">pub fn <a href="#method.repeat" class="fnname">repeat</a>(&self, n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><T, <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/alloc/struct.Global.html" title="struct alloc::alloc::Global">Global</a>> <a href="#" class="notable-traits" data-ty="Vec<T, Global>">ⓘ</a><span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Copy.html" title="trait core::marker::Copy">Copy</a>,</span></h4></section></summary><div class="docblock"><p>Creates a vector by copying a slice <code>n</code> times.</p>
|
||
<h5 id="panics-36"><a href="#panics-36">Panics</a></h5>
|
||
<p>This function will panic if the capacity would overflow.</p>
|
||
<h5 id="examples-111"><a href="#examples-111">Examples</a></h5>
|
||
<p>Basic usage:</p>
|
||
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>([<span class="number">1</span>, <span class="number">2</span>].repeat(<span class="number">3</span>), <span class="macro">vec!</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">1</span>, <span class="number">2</span>]);</code></pre></div>
|
||
<p>A panic upon overflow:</p>
|
||
|
||
<div class="example-wrap should_panic"><div class='tooltip'>ⓘ</div><pre class="rust rust-example-rendered"><code><span class="comment">// this will panic at runtime
|
||
</span><span class="string">b"0123456789abcdef"</span>.repeat(usize::MAX);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.concat" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/alloc/slice.rs.html#552-554">source</a></span><h4 class="code-header">pub fn <a href="#method.concat" class="fnname">concat</a><Item>(&self) -> <<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a> as <a class="trait" href="https://doc.rust-lang.org/nightly/alloc/slice/trait.Concat.html" title="trait alloc::slice::Concat">Concat</a><Item>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/alloc/slice/trait.Concat.html#associatedtype.Output" title="type alloc::slice::Concat::Output">Output</a> <a href="#" class="notable-traits" data-ty="<[T] as Concat<Item>>::Output">ⓘ</a><span class="where fmt-newline">where<br> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>: <a class="trait" href="https://doc.rust-lang.org/nightly/alloc/slice/trait.Concat.html" title="trait alloc::slice::Concat">Concat</a><Item>,<br> Item: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h4></section></summary><div class="docblock"><p>Flattens a slice of <code>T</code> into a single value <code>Self::Output</code>.</p>
|
||
<h5 id="examples-112"><a href="#examples-112">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>([<span class="string">"hello"</span>, <span class="string">"world"</span>].concat(), <span class="string">"helloworld"</span>);
|
||
<span class="macro">assert_eq!</span>([[<span class="number">1</span>, <span class="number">2</span>], [<span class="number">3</span>, <span class="number">4</span>]].concat(), [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.join" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.3.0">1.3.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/alloc/slice.rs.html#571-573">source</a></span><h4 class="code-header">pub fn <a href="#method.join" class="fnname">join</a><Separator>(&self, sep: Separator) -> <<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a> as <a class="trait" href="https://doc.rust-lang.org/nightly/alloc/slice/trait.Join.html" title="trait alloc::slice::Join">Join</a><Separator>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/alloc/slice/trait.Join.html#associatedtype.Output" title="type alloc::slice::Join::Output">Output</a> <a href="#" class="notable-traits" data-ty="<[T] as Join<Separator>>::Output">ⓘ</a><span class="where fmt-newline">where<br> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>: <a class="trait" href="https://doc.rust-lang.org/nightly/alloc/slice/trait.Join.html" title="trait alloc::slice::Join">Join</a><Separator>,</span></h4></section></summary><div class="docblock"><p>Flattens a slice of <code>T</code> into a single value <code>Self::Output</code>, placing a
|
||
given separator between each.</p>
|
||
<h5 id="examples-113"><a href="#examples-113">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>([<span class="string">"hello"</span>, <span class="string">"world"</span>].join(<span class="string">" "</span>), <span class="string">"hello world"</span>);
|
||
<span class="macro">assert_eq!</span>([[<span class="number">1</span>, <span class="number">2</span>], [<span class="number">3</span>, <span class="number">4</span>]].join(<span class="kw-2">&</span><span class="number">0</span>), [<span class="number">1</span>, <span class="number">2</span>, <span class="number">0</span>, <span class="number">3</span>, <span class="number">4</span>]);
|
||
<span class="macro">assert_eq!</span>([[<span class="number">1</span>, <span class="number">2</span>], [<span class="number">3</span>, <span class="number">4</span>]].join(<span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">0</span>][..]), [<span class="number">1</span>, <span class="number">2</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">3</span>, <span class="number">4</span>]);</code></pre></div>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.connect" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/alloc/slice.rs.html#591-593">source</a></span><h4 class="code-header">pub fn <a href="#method.connect" class="fnname">connect</a><Separator>(<br> &self,<br> sep: Separator<br>) -> <<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a> as <a class="trait" href="https://doc.rust-lang.org/nightly/alloc/slice/trait.Join.html" title="trait alloc::slice::Join">Join</a><Separator>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/alloc/slice/trait.Join.html#associatedtype.Output" title="type alloc::slice::Join::Output">Output</a> <a href="#" class="notable-traits" data-ty="<[T] as Join<Separator>>::Output">ⓘ</a><span class="where fmt-newline">where<br> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[T]</a>: <a class="trait" href="https://doc.rust-lang.org/nightly/alloc/slice/trait.Join.html" title="trait alloc::slice::Join">Join</a><Separator>,</span></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 1.3.0: renamed to join</span></div></span></summary><div class="docblock"><p>Flattens a slice of <code>T</code> into a single value <code>Self::Output</code>, placing a
|
||
given separator between each.</p>
|
||
<h5 id="examples-114"><a href="#examples-114">Examples</a></h5>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>([<span class="string">"hello"</span>, <span class="string">"world"</span>].connect(<span class="string">" "</span>), <span class="string">"hello world"</span>);
|
||
<span class="macro">assert_eq!</span>([[<span class="number">1</span>, <span class="number">2</span>], [<span class="number">3</span>, <span class="number">4</span>]].connect(<span class="kw-2">&</span><span class="number">0</span>), [<span class="number">1</span>, <span class="number">2</span>, <span class="number">0</span>, <span class="number">3</span>, <span class="number">4</span>]);</code></pre></div>
|
||
</div></details></div><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_ascii_uppercase" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.23.0">1.23.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/alloc/slice.rs.html#616">source</a></span><h4 class="code-header">pub fn <a href="#method.to_ascii_uppercase" class="fnname">to_ascii_uppercase</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/alloc/struct.Global.html" title="struct alloc::alloc::Global">Global</a>> <a href="#" class="notable-traits" data-ty="Vec<u8, Global>">ⓘ</a></h4></section></summary><div class="docblock"><p>Returns a vector containing a copy of this slice where each byte
|
||
is mapped to its ASCII upper case equivalent.</p>
|
||
<p>ASCII letters ‘a’ to ‘z’ are mapped to ‘A’ to ‘Z’,
|
||
but non-ASCII letters are unchanged.</p>
|
||
<p>To uppercase the value in-place, use <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.make_ascii_uppercase"><code>make_ascii_uppercase</code></a>.</p>
|
||
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_ascii_lowercase" class="method has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.23.0">1.23.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/alloc/slice.rs.html#637">source</a></span><h4 class="code-header">pub fn <a href="#method.to_ascii_lowercase" class="fnname">to_ascii_lowercase</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/alloc/struct.Global.html" title="struct alloc::alloc::Global">Global</a>> <a href="#" class="notable-traits" data-ty="Vec<u8, Global>">ⓘ</a></h4></section></summary><div class="docblock"><p>Returns a vector containing a copy of this slice where each byte
|
||
is mapped to its ASCII lower case equivalent.</p>
|
||
<p>ASCII letters ‘A’ to ‘Z’ are mapped to ‘a’ to ‘z’,
|
||
but non-ASCII letters are unchanged.</p>
|
||
<p>To lowercase the value in-place, use <a href="https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.make_ascii_lowercase"><code>make_ascii_lowercase</code></a>.</p>
|
||
</div></details></div></div><h2 id="trait-implementations" class="small-section-header">Trait Implementations<a href="#trait-implementations" class="anchor"></a></h2><div id="trait-implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Add%3C%26%27a%20Polynomial%3CF%2C%20B%3E%3E-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#184-196">source</a><a href="#impl-Add%3C%26%27a%20Polynomial%3CF%2C%20B%3E%3E-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<'a, F: <a class="trait" href="../arithmetic/trait.Field.html" title="trait halo2_proofs::arithmetic::Field">Field</a>, B: <a class="trait" href="trait.Basis.html" title="trait halo2_proofs::poly::Basis">Basis</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Add.html" title="trait core::ops::arith::Add">Add</a><&'a <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B>> for <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Output-3" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Output-3" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Add.html#associatedtype.Output" class="associatedtype">Output</a> = <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B></h4></section></summary><div class='docblock'>The resulting type after applying the <code>+</code> operator.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.add" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#187-195">source</a><a href="#method.add" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Add.html#tymethod.add" class="fnname">add</a>(self, rhs: &'a <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B>) -> <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B></h4></section></summary><div class='docblock'>Performs the <code>+</code> operation. <a href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Add.html#tymethod.add">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Clone-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#53">source</a><a href="#impl-Clone-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>, B: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.clone" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#53">source</a><a href="#method.clone" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone" class="fnname">clone</a>(&self) -> <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B></h4></section></summary><div class='docblock'>Returns a copy of the value. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.clone_from" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/clone.rs.html#132-134">source</a></span><a href="#method.clone_from" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from" class="fnname">clone_from</a>(&mut self, source: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Self)</h4></section></summary><div class='docblock'>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Debug-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#53">source</a><a href="#impl-Debug-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a>, B: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#53">source</a><a href="#method.fmt" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt" class="fnname">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Deref-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#101-107">source</a><a href="#impl-Deref-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<F, B> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html" title="trait core::ops::deref::Deref">Deref</a> for <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Target" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Target" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html#associatedtype.Target" class="associatedtype">Target</a> = <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[F]</a></h4></section></summary><div class='docblock'>The resulting type after dereferencing.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.deref" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#104-106">source</a><a href="#method.deref" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html#tymethod.deref" class="fnname">deref</a>(&self) -> &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[F]</a> <a href="#" class="notable-traits" data-ty="&[F]">ⓘ</a></h4></section></summary><div class='docblock'>Dereferences the value.</div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-DerefMut-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#109-113">source</a><a href="#impl-DerefMut-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<F, B> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.DerefMut.html" title="trait core::ops::deref::DerefMut">DerefMut</a> for <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.deref_mut" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#110-112">source</a><a href="#method.deref_mut" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.DerefMut.html#tymethod.deref_mut" class="fnname">deref_mut</a>(&mut self) -> &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[F]</a> <a href="#" class="notable-traits" data-ty="&mut [F]">ⓘ</a></h4></section></summary><div class='docblock'>Mutably dereferences the value.</div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Index%3CRangeFrom%3Cusize%3E%3E-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#73-79">source</a><a href="#impl-Index%3CRangeFrom%3Cusize%3E%3E-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<F, B> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/index/trait.Index.html" title="trait core::ops::index::Index">Index</a><<a class="struct" href="https://doc.rust-lang.org/nightly/core/ops/range/struct.RangeFrom.html" title="struct core::ops::range::RangeFrom">RangeFrom</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>> for <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Output-1" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Output-1" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/ops/index/trait.Index.html#associatedtype.Output" class="associatedtype">Output</a> = <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[F]</a></h4></section></summary><div class='docblock'>The returned type after indexing.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.index-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#76-78">source</a><a href="#method.index-1" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/ops/index/trait.Index.html#tymethod.index" class="fnname">index</a>(&self, index: <a class="struct" href="https://doc.rust-lang.org/nightly/core/ops/range/struct.RangeFrom.html" title="struct core::ops::range::RangeFrom">RangeFrom</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>) -> &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[F]</a> <a href="#" class="notable-traits" data-ty="&[F]">ⓘ</a></h4></section></summary><div class='docblock'>Performs the indexing (<code>container[index]</code>) operation. <a href="https://doc.rust-lang.org/nightly/core/ops/index/trait.Index.html#tymethod.index">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Index%3CRangeFull%3E-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#87-93">source</a><a href="#impl-Index%3CRangeFull%3E-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<F, B> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/index/trait.Index.html" title="trait core::ops::index::Index">Index</a><<a class="struct" href="https://doc.rust-lang.org/nightly/core/ops/range/struct.RangeFull.html" title="struct core::ops::range::RangeFull">RangeFull</a>> for <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Output-2" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Output-2" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/ops/index/trait.Index.html#associatedtype.Output" class="associatedtype">Output</a> = <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[F]</a></h4></section></summary><div class='docblock'>The returned type after indexing.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.index-2" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#90-92">source</a><a href="#method.index-2" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/ops/index/trait.Index.html#tymethod.index" class="fnname">index</a>(&self, index: <a class="struct" href="https://doc.rust-lang.org/nightly/core/ops/range/struct.RangeFull.html" title="struct core::ops::range::RangeFull">RangeFull</a>) -> &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[F]</a> <a href="#" class="notable-traits" data-ty="&[F]">ⓘ</a></h4></section></summary><div class='docblock'>Performs the indexing (<code>container[index]</code>) operation. <a href="https://doc.rust-lang.org/nightly/core/ops/index/trait.Index.html#tymethod.index">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Index%3Cusize%3E-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#59-65">source</a><a href="#impl-Index%3Cusize%3E-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<F, B> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/index/trait.Index.html" title="trait core::ops::index::Index">Index</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>> for <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Output" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Output" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/ops/index/trait.Index.html#associatedtype.Output" class="associatedtype">Output</a> = F</h4></section></summary><div class='docblock'>The returned type after indexing.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.index" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#62-64">source</a><a href="#method.index" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/ops/index/trait.Index.html#tymethod.index" class="fnname">index</a>(&self, index: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>F</h4></section></summary><div class='docblock'>Performs the indexing (<code>container[index]</code>) operation. <a href="https://doc.rust-lang.org/nightly/core/ops/index/trait.Index.html#tymethod.index">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-IndexMut%3CRangeFrom%3Cusize%3E%3E-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#81-85">source</a><a href="#impl-IndexMut%3CRangeFrom%3Cusize%3E%3E-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<F, B> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/index/trait.IndexMut.html" title="trait core::ops::index::IndexMut">IndexMut</a><<a class="struct" href="https://doc.rust-lang.org/nightly/core/ops/range/struct.RangeFrom.html" title="struct core::ops::range::RangeFrom">RangeFrom</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>> for <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.index_mut-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#82-84">source</a><a href="#method.index_mut-1" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/ops/index/trait.IndexMut.html#tymethod.index_mut" class="fnname">index_mut</a>(&mut self, index: <a class="struct" href="https://doc.rust-lang.org/nightly/core/ops/range/struct.RangeFrom.html" title="struct core::ops::range::RangeFrom">RangeFrom</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>) -> &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[F]</a> <a href="#" class="notable-traits" data-ty="&mut [F]">ⓘ</a></h4></section></summary><div class='docblock'>Performs the mutable indexing (<code>container[index]</code>) operation. <a href="https://doc.rust-lang.org/nightly/core/ops/index/trait.IndexMut.html#tymethod.index_mut">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-IndexMut%3CRangeFull%3E-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#95-99">source</a><a href="#impl-IndexMut%3CRangeFull%3E-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<F, B> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/index/trait.IndexMut.html" title="trait core::ops::index::IndexMut">IndexMut</a><<a class="struct" href="https://doc.rust-lang.org/nightly/core/ops/range/struct.RangeFull.html" title="struct core::ops::range::RangeFull">RangeFull</a>> for <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.index_mut-2" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#96-98">source</a><a href="#method.index_mut-2" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/ops/index/trait.IndexMut.html#tymethod.index_mut" class="fnname">index_mut</a>(&mut self, index: <a class="struct" href="https://doc.rust-lang.org/nightly/core/ops/range/struct.RangeFull.html" title="struct core::ops::range::RangeFull">RangeFull</a>) -> &mut <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[F]</a> <a href="#" class="notable-traits" data-ty="&mut [F]">ⓘ</a></h4></section></summary><div class='docblock'>Performs the mutable indexing (<code>container[index]</code>) operation. <a href="https://doc.rust-lang.org/nightly/core/ops/index/trait.IndexMut.html#tymethod.index_mut">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-IndexMut%3Cusize%3E-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#67-71">source</a><a href="#impl-IndexMut%3Cusize%3E-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<F, B> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/index/trait.IndexMut.html" title="trait core::ops::index::IndexMut">IndexMut</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>> for <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.index_mut" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#68-70">source</a><a href="#method.index_mut" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/ops/index/trait.IndexMut.html#tymethod.index_mut" class="fnname">index_mut</a>(&mut self, index: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>F</h4></section></summary><div class='docblock'>Performs the mutable indexing (<code>container[index]</code>) operation. <a href="https://doc.rust-lang.org/nightly/core/ops/index/trait.IndexMut.html#tymethod.index_mut">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Mul%3CF%3E-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#290-302">source</a><a href="#impl-Mul%3CF%3E-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<F: <a class="trait" href="../arithmetic/trait.Field.html" title="trait halo2_proofs::arithmetic::Field">Field</a>, B: <a class="trait" href="trait.Basis.html" title="trait halo2_proofs::poly::Basis">Basis</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Mul.html" title="trait core::ops::arith::Mul">Mul</a><F> for <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Output-4" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Output-4" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Mul.html#associatedtype.Output" class="associatedtype">Output</a> = <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B></h4></section></summary><div class='docblock'>The resulting type after applying the <code>*</code> operator.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.mul" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/halo2_proofs/poly.rs.html#293-301">source</a><a href="#method.mul" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Mul.html#tymethod.mul" class="fnname">mul</a>(self, rhs: F) -> <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B></h4></section></summary><div class='docblock'>Performs the <code>*</code> operation. <a href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Mul.html#tymethod.mul">Read more</a></div></details></div></details></div><h2 id="synthetic-implementations" class="small-section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor"></a></h2><div id="synthetic-implementations-list"><section id="impl-RefUnwindSafe-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a href="#impl-RefUnwindSafe-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<F, B> <a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B><span class="where fmt-newline">where<br> B: <a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a>,<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a>,</span></h3></section><section id="impl-Send-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a href="#impl-Send-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<F, B> <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B><span class="where fmt-newline">where<br> B: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>,<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>,</span></h3></section><section id="impl-Sync-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a href="#impl-Sync-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<F, B> <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B><span class="where fmt-newline">where<br> B: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>,<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>,</span></h3></section><section id="impl-Unpin-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a href="#impl-Unpin-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<F, B> <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B><span class="where fmt-newline">where<br> B: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a>,<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a>,</span></h3></section><section id="impl-UnwindSafe-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a href="#impl-UnwindSafe-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<F, B> <a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="struct.Polynomial.html" title="struct halo2_proofs::poly::Polynomial">Polynomial</a><F, B><span class="where fmt-newline">where<br> B: <a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a>,<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a>,</span></h3></section></div><h2 id="blanket-implementations" class="small-section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor"></a></h2><div id="blanket-implementations-list"><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Any-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#200">source</a><a href="#impl-Any-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T<span class="where fmt-newline">where<br> T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#201">source</a><a href="#method.type_id" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id" class="fnname">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></h4></section></summary><div class='docblock'>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#211">source</a><a href="#impl-Borrow%3CT%3E-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> for T<span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/91522" title="Tracking issue for const_borrow">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#213">source</a></span><a href="#method.borrow" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow" class="fnname">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T</h4></section></summary><div class='docblock'>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#220">source</a><a href="#impl-BorrowMut%3CT%3E-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T<span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/91522" title="Tracking issue for const_borrow">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#221">source</a></span><a href="#method.borrow_mut" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fnname">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T</h4></section></summary><div class='docblock'>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Conv-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a href="#impl-Conv-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<T> Conv for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.conv" class="method trait-impl has-srclink"><a href="#method.conv" class="anchor"></a><h4 class="code-header">fn <a class="fnname">conv</a><T>(self) -> T<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>,</span></h4></section></summary><div class='docblock'>Converts <code>self</code> into <code>T</code> using <code>Into<T></code>. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-FmtForward-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a href="#impl-FmtForward-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<T> FmtForward for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt_binary" class="method trait-impl has-srclink"><a href="#method.fmt_binary" class="anchor"></a><h4 class="code-header">fn <a class="fnname">fmt_binary</a>(self) -> FmtBinary<Self><span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Binary.html" title="trait core::fmt::Binary">Binary</a>,</span></h4></section></summary><div class='docblock'>Causes <code>self</code> to use its <code>Binary</code> implementation when <code>Debug</code>-formatted.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt_display" class="method trait-impl has-srclink"><a href="#method.fmt_display" class="anchor"></a><h4 class="code-header">fn <a class="fnname">fmt_display</a>(self) -> FmtDisplay<Self><span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a>,</span></h4></section></summary><div class='docblock'>Causes <code>self</code> to use its <code>Display</code> implementation when
|
||
<code>Debug</code>-formatted. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt_lower_exp" class="method trait-impl has-srclink"><a href="#method.fmt_lower_exp" class="anchor"></a><h4 class="code-header">fn <a class="fnname">fmt_lower_exp</a>(self) -> FmtLowerExp<Self><span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.LowerExp.html" title="trait core::fmt::LowerExp">LowerExp</a>,</span></h4></section></summary><div class='docblock'>Causes <code>self</code> to use its <code>LowerExp</code> implementation when
|
||
<code>Debug</code>-formatted. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt_lower_hex" class="method trait-impl has-srclink"><a href="#method.fmt_lower_hex" class="anchor"></a><h4 class="code-header">fn <a class="fnname">fmt_lower_hex</a>(self) -> FmtLowerHex<Self><span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.LowerHex.html" title="trait core::fmt::LowerHex">LowerHex</a>,</span></h4></section></summary><div class='docblock'>Causes <code>self</code> to use its <code>LowerHex</code> implementation when
|
||
<code>Debug</code>-formatted. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt_octal" class="method trait-impl has-srclink"><a href="#method.fmt_octal" class="anchor"></a><h4 class="code-header">fn <a class="fnname">fmt_octal</a>(self) -> FmtOctal<Self><span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Octal.html" title="trait core::fmt::Octal">Octal</a>,</span></h4></section></summary><div class='docblock'>Causes <code>self</code> to use its <code>Octal</code> implementation when <code>Debug</code>-formatted.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt_pointer" class="method trait-impl has-srclink"><a href="#method.fmt_pointer" class="anchor"></a><h4 class="code-header">fn <a class="fnname">fmt_pointer</a>(self) -> FmtPointer<Self><span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Pointer.html" title="trait core::fmt::Pointer">Pointer</a>,</span></h4></section></summary><div class='docblock'>Causes <code>self</code> to use its <code>Pointer</code> implementation when
|
||
<code>Debug</code>-formatted. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt_upper_exp" class="method trait-impl has-srclink"><a href="#method.fmt_upper_exp" class="anchor"></a><h4 class="code-header">fn <a class="fnname">fmt_upper_exp</a>(self) -> FmtUpperExp<Self><span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.UpperExp.html" title="trait core::fmt::UpperExp">UpperExp</a>,</span></h4></section></summary><div class='docblock'>Causes <code>self</code> to use its <code>UpperExp</code> implementation when
|
||
<code>Debug</code>-formatted. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt_upper_hex" class="method trait-impl has-srclink"><a href="#method.fmt_upper_hex" class="anchor"></a><h4 class="code-header">fn <a class="fnname">fmt_upper_hex</a>(self) -> FmtUpperHex<Self><span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.UpperHex.html" title="trait core::fmt::UpperHex">UpperHex</a>,</span></h4></section></summary><div class='docblock'>Causes <code>self</code> to use its <code>UpperHex</code> implementation when
|
||
<code>Debug</code>-formatted. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt_list" class="method trait-impl has-srclink"><a href="#method.fmt_list" class="anchor"></a><h4 class="code-header">fn <a class="fnname">fmt_list</a>(self) -> FmtList<Self><span class="where fmt-newline">where<br> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a </a>Self: for<'a> <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html" title="trait core::iter::traits::collect::IntoIterator">IntoIterator</a>,</span></h4></section></summary><div class='docblock'>Formats each item in a sequence. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#733">source</a><a href="#impl-From%3CT%3E-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#736">source</a></span><a href="#method.from" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from" class="fnname">from</a>(t: T) -> T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p>
|
||
</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Instrument-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="https://docs.rs/tracing/0.1.37/src/tracing/instrument.rs.html#276">source</a><a href="#impl-Instrument-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://docs.rs/tracing/0.1.37/tracing/instrument/trait.Instrument.html" title="trait tracing::instrument::Instrument">Instrument</a> for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.instrument" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://docs.rs/tracing/0.1.37/src/tracing/instrument.rs.html#82">source</a><a href="#method.instrument" class="anchor"></a><h4 class="code-header">fn <a href="https://docs.rs/tracing/0.1.37/tracing/instrument/trait.Instrument.html#method.instrument" class="fnname">instrument</a>(self, span: <a class="struct" href="https://docs.rs/tracing/0.1.37/tracing/span/struct.Span.html" title="struct tracing::span::Span">Span</a>) -> <a class="struct" href="https://docs.rs/tracing/0.1.37/tracing/instrument/struct.Instrumented.html" title="struct tracing::instrument::Instrumented">Instrumented</a><Self></h4></section></summary><div class='docblock'>Instruments this type with the provided <a href="https://docs.rs/tracing/0.1.37/tracing/span/struct.Span.html" title="Span"><code>Span</code></a>, returning an
|
||
<code>Instrumented</code> wrapper. <a href="https://docs.rs/tracing/0.1.37/tracing/instrument/trait.Instrument.html#method.instrument">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.in_current_span" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://docs.rs/tracing/0.1.37/src/tracing/instrument.rs.html#121">source</a><a href="#method.in_current_span" class="anchor"></a><h4 class="code-header">fn <a href="https://docs.rs/tracing/0.1.37/tracing/instrument/trait.Instrument.html#method.in_current_span" class="fnname">in_current_span</a>(self) -> <a class="struct" href="https://docs.rs/tracing/0.1.37/tracing/instrument/struct.Instrumented.html" title="struct tracing::instrument::Instrumented">Instrumented</a><Self></h4></section></summary><div class='docblock'>Instruments this type with the <a href="https://docs.rs/tracing/0.1.37/tracing/span/struct.Span.html#method.current">current</a> <a href="https://docs.rs/tracing/0.1.37/tracing/span/struct.Span.html"><code>Span</code></a>, returning an
|
||
<code>Instrumented</code> wrapper. <a href="https://docs.rs/tracing/0.1.37/tracing/instrument/trait.Instrument.html#method.in_current_span">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#717">source</a><a href="#impl-Into%3CU%3E-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><U> for T<span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.into" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#725">source</a></span><a href="#method.into" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into" class="fnname">into</a>(self) -> U</h4></section></summary><div class="docblock"><p>Calls <code>U::from(self)</code>.</p>
|
||
<p>That is, this conversion is whatever the implementation of
|
||
<code><a href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="From">From</a><T> for U</code> chooses to do.</p>
|
||
</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Pipe-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a href="#impl-Pipe-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<T> Pipe for T<span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.pipe" class="method trait-impl has-srclink"><a href="#method.pipe" class="anchor"></a><h4 class="code-header">fn <a class="fnname">pipe</a><R>(self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(Self) -> R) -> R<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h4></section></summary><div class='docblock'>Pipes by value. This is generally the method you want to use. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.pipe_ref" class="method trait-impl has-srclink"><a href="#method.pipe_ref" class="anchor"></a><h4 class="code-header">fn <a class="fnname">pipe_ref</a><'a, R>(&'a self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a </a>Self) -> R) -> R<span class="where fmt-newline">where<br> R: 'a,</span></h4></section></summary><div class='docblock'>Borrows <code>self</code> and passes that borrow into the pipe function. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.pipe_ref_mut" class="method trait-impl has-srclink"><a href="#method.pipe_ref_mut" class="anchor"></a><h4 class="code-header">fn <a class="fnname">pipe_ref_mut</a><'a, R>(&'a mut self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>Self) -> R) -> R<span class="where fmt-newline">where<br> R: 'a,</span></h4></section></summary><div class='docblock'>Mutably borrows <code>self</code> and passes that borrow into the pipe function. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.pipe_borrow" class="method trait-impl has-srclink"><a href="#method.pipe_borrow" class="anchor"></a><h4 class="code-header">fn <a class="fnname">pipe_borrow</a><'a, B, R>(&'a self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a </a>B) -> R) -> R<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><B>,<br> B: 'a + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,<br> R: 'a,</span></h4></section></summary><div class='docblock'>Borrows <code>self</code>, then passes <code>self.borrow()</code> into the pipe function. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.pipe_borrow_mut" class="method trait-impl has-srclink"><a href="#method.pipe_borrow_mut" class="anchor"></a><h4 class="code-header">fn <a class="fnname">pipe_borrow_mut</a><'a, B, R>(<br> &'a mut self,<br> func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>B) -> R<br>) -> R<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><B>,<br> B: 'a + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,<br> R: 'a,</span></h4></section></summary><div class='docblock'>Mutably borrows <code>self</code>, then passes <code>self.borrow_mut()</code> into the pipe
|
||
function. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.pipe_as_ref" class="method trait-impl has-srclink"><a href="#method.pipe_as_ref" class="anchor"></a><h4 class="code-header">fn <a class="fnname">pipe_as_ref</a><'a, U, R>(&'a self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a </a>U) -> R) -> R<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.AsRef.html" title="trait core::convert::AsRef">AsRef</a><U>,<br> U: 'a + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,<br> R: 'a,</span></h4></section></summary><div class='docblock'>Borrows <code>self</code>, then passes <code>self.as_ref()</code> into the pipe function.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.pipe_as_mut" class="method trait-impl has-srclink"><a href="#method.pipe_as_mut" class="anchor"></a><h4 class="code-header">fn <a class="fnname">pipe_as_mut</a><'a, U, R>(&'a mut self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>U) -> R) -> R<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.AsMut.html" title="trait core::convert::AsMut">AsMut</a><U>,<br> U: 'a + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,<br> R: 'a,</span></h4></section></summary><div class='docblock'>Mutably borrows <code>self</code>, then passes <code>self.as_mut()</code> into the pipe
|
||
function. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.pipe_deref" class="method trait-impl has-srclink"><a href="#method.pipe_deref" class="anchor"></a><h4 class="code-header">fn <a class="fnname">pipe_deref</a><'a, T, R>(&'a self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a </a>T) -> R) -> R<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html" title="trait core::ops::deref::Deref">Deref</a><Target = T>,<br> T: 'a + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,<br> R: 'a,</span></h4></section></summary><div class='docblock'>Borrows <code>self</code>, then passes <code>self.deref()</code> into the pipe function.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.pipe_deref_mut" class="method trait-impl has-srclink"><a href="#method.pipe_deref_mut" class="anchor"></a><h4 class="code-header">fn <a class="fnname">pipe_deref_mut</a><'a, T, R>(&'a mut self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>T) -> R) -> R<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.DerefMut.html" title="trait core::ops::deref::DerefMut">DerefMut</a><Target = T> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html" title="trait core::ops::deref::Deref">Deref</a>,<br> T: 'a + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,<br> R: 'a,</span></h4></section></summary><div class='docblock'>Mutably borrows <code>self</code>, then passes <code>self.deref_mut()</code> into the pipe
|
||
function. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Pointable-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a href="#impl-Pointable-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<T> Pointable for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedconstant.ALIGN" class="associatedconstant trait-impl has-srclink"><a href="#associatedconstant.ALIGN" class="anchor"></a><h4 class="code-header">const <a class="constant">ALIGN</a>: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a> = mem::align_of::<T>()</h4></section></summary><div class='docblock'>The alignment of pointer.</div></details><details class="rustdoc-toggle" open><summary><section id="associatedtype.Init" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Init" class="anchor"></a><h4 class="code-header">type <a class="associatedtype">Init</a> = T</h4></section></summary><div class='docblock'>The type for initializers.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.init" class="method trait-impl has-srclink"><a href="#method.init" class="anchor"></a><h4 class="code-header">unsafe fn <a class="fnname">init</a>(init: <T as Pointable>::Init) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></h4></section></summary><div class='docblock'>Initializes a with the given initializer. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.deref-1" class="method trait-impl has-srclink"><a href="#method.deref-1" class="anchor"></a><h4 class="code-header">unsafe fn <a class="fnname">deref</a><'a>(ptr: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a </a>T</h4></section></summary><div class='docblock'>Dereferences the given pointer. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.deref_mut-1" class="method trait-impl has-srclink"><a href="#method.deref_mut-1" class="anchor"></a><h4 class="code-header">unsafe fn <a class="fnname">deref_mut</a><'a>(ptr: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>T</h4></section></summary><div class='docblock'>Mutably dereferences the given pointer. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.drop" class="method trait-impl has-srclink"><a href="#method.drop" class="anchor"></a><h4 class="code-header">unsafe fn <a class="fnname">drop</a>(ptr: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>)</h4></section></summary><div class='docblock'>Drops the object pointed to by the given pointer. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Tap-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a href="#impl-Tap-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<T> Tap for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.tap" class="method trait-impl has-srclink"><a href="#method.tap" class="anchor"></a><h4 class="code-header">fn <a class="fnname">tap</a>(self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Self)) -> Self</h4></section></summary><div class='docblock'>Immutable access to a value. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.tap_mut" class="method trait-impl has-srclink"><a href="#method.tap_mut" class="anchor"></a><h4 class="code-header">fn <a class="fnname">tap_mut</a>(self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self)) -> Self</h4></section></summary><div class='docblock'>Mutable access to a value. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.tap_borrow" class="method trait-impl has-srclink"><a href="#method.tap_borrow" class="anchor"></a><h4 class="code-header">fn <a class="fnname">tap_borrow</a><B>(self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>B)) -> Self<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><B>,<br> B: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h4></section></summary><div class='docblock'>Immutable access to the <code>Borrow<B></code> of a value. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.tap_borrow_mut" class="method trait-impl has-srclink"><a href="#method.tap_borrow_mut" class="anchor"></a><h4 class="code-header">fn <a class="fnname">tap_borrow_mut</a><B>(self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>B)) -> Self<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><B>,<br> B: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h4></section></summary><div class='docblock'>Mutable access to the <code>BorrowMut<B></code> of a value. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.tap_ref" class="method trait-impl has-srclink"><a href="#method.tap_ref" class="anchor"></a><h4 class="code-header">fn <a class="fnname">tap_ref</a><R>(self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>R)) -> Self<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.AsRef.html" title="trait core::convert::AsRef">AsRef</a><R>,<br> R: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h4></section></summary><div class='docblock'>Immutable access to the <code>AsRef<R></code> view of a value. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.tap_ref_mut" class="method trait-impl has-srclink"><a href="#method.tap_ref_mut" class="anchor"></a><h4 class="code-header">fn <a class="fnname">tap_ref_mut</a><R>(self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>R)) -> Self<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.AsMut.html" title="trait core::convert::AsMut">AsMut</a><R>,<br> R: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h4></section></summary><div class='docblock'>Mutable access to the <code>AsMut<R></code> view of a value. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.tap_deref" class="method trait-impl has-srclink"><a href="#method.tap_deref" class="anchor"></a><h4 class="code-header">fn <a class="fnname">tap_deref</a><T>(self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T)) -> Self<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html" title="trait core::ops::deref::Deref">Deref</a><Target = T>,<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h4></section></summary><div class='docblock'>Immutable access to the <code>Deref::Target</code> of a value. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.tap_deref_mut" class="method trait-impl has-srclink"><a href="#method.tap_deref_mut" class="anchor"></a><h4 class="code-header">fn <a class="fnname">tap_deref_mut</a><T>(self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T)) -> Self<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.DerefMut.html" title="trait core::ops::deref::DerefMut">DerefMut</a><Target = T> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html" title="trait core::ops::deref::Deref">Deref</a>,<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h4></section></summary><div class='docblock'>Mutable access to the <code>Deref::Target</code> of a value. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.tap_dbg" class="method trait-impl has-srclink"><a href="#method.tap_dbg" class="anchor"></a><h4 class="code-header">fn <a class="fnname">tap_dbg</a>(self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Self)) -> Self</h4></section></summary><div class='docblock'>Calls <code>.tap()</code> only in debug builds, and is erased in release builds.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.tap_mut_dbg" class="method trait-impl has-srclink"><a href="#method.tap_mut_dbg" class="anchor"></a><h4 class="code-header">fn <a class="fnname">tap_mut_dbg</a>(self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self)) -> Self</h4></section></summary><div class='docblock'>Calls <code>.tap_mut()</code> only in debug builds, and is erased in release
|
||
builds. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.tap_borrow_dbg" class="method trait-impl has-srclink"><a href="#method.tap_borrow_dbg" class="anchor"></a><h4 class="code-header">fn <a class="fnname">tap_borrow_dbg</a><B>(self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>B)) -> Self<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><B>,<br> B: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h4></section></summary><div class='docblock'>Calls <code>.tap_borrow()</code> only in debug builds, and is erased in release
|
||
builds. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.tap_borrow_mut_dbg" class="method trait-impl has-srclink"><a href="#method.tap_borrow_mut_dbg" class="anchor"></a><h4 class="code-header">fn <a class="fnname">tap_borrow_mut_dbg</a><B>(self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>B)) -> Self<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><B>,<br> B: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h4></section></summary><div class='docblock'>Calls <code>.tap_borrow_mut()</code> only in debug builds, and is erased in release
|
||
builds. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.tap_ref_dbg" class="method trait-impl has-srclink"><a href="#method.tap_ref_dbg" class="anchor"></a><h4 class="code-header">fn <a class="fnname">tap_ref_dbg</a><R>(self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>R)) -> Self<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.AsRef.html" title="trait core::convert::AsRef">AsRef</a><R>,<br> R: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h4></section></summary><div class='docblock'>Calls <code>.tap_ref()</code> only in debug builds, and is erased in release
|
||
builds. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.tap_ref_mut_dbg" class="method trait-impl has-srclink"><a href="#method.tap_ref_mut_dbg" class="anchor"></a><h4 class="code-header">fn <a class="fnname">tap_ref_mut_dbg</a><R>(self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>R)) -> Self<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.AsMut.html" title="trait core::convert::AsMut">AsMut</a><R>,<br> R: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h4></section></summary><div class='docblock'>Calls <code>.tap_ref_mut()</code> only in debug builds, and is erased in release
|
||
builds. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.tap_deref_dbg" class="method trait-impl has-srclink"><a href="#method.tap_deref_dbg" class="anchor"></a><h4 class="code-header">fn <a class="fnname">tap_deref_dbg</a><T>(self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T)) -> Self<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html" title="trait core::ops::deref::Deref">Deref</a><Target = T>,<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h4></section></summary><div class='docblock'>Calls <code>.tap_deref()</code> only in debug builds, and is erased in release
|
||
builds. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.tap_deref_mut_dbg" class="method trait-impl has-srclink"><a href="#method.tap_deref_mut_dbg" class="anchor"></a><h4 class="code-header">fn <a class="fnname">tap_deref_mut_dbg</a><T>(self, func: impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T)) -> Self<span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.DerefMut.html" title="trait core::ops::deref::DerefMut">DerefMut</a><Target = T> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html" title="trait core::ops::deref::Deref">Deref</a>,<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h4></section></summary><div class='docblock'>Calls <code>.tap_deref_mut()</code> only in debug builds, and is erased in release
|
||
builds. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToOwned-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#82">source</a><a href="#impl-ToOwned-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html" title="trait alloc::borrow::ToOwned">ToOwned</a> for T<span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Owned" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Owned" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#associatedtype.Owned" class="associatedtype">Owned</a> = T</h4></section></summary><div class='docblock'>The resulting type after obtaining ownership.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_owned" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#87">source</a><a href="#method.to_owned" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned" class="fnname">to_owned</a>(&self) -> T</h4></section></summary><div class='docblock'>Creates owned data from borrowed data, usually by cloning. <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.clone_into" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#91">source</a><a href="#method.clone_into" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#method.clone_into" class="fnname">clone_into</a>(&self, target: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T)</h4></section></summary><div class='docblock'>Uses borrowed data to replace owned data, usually by cloning. <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryConv-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a href="#impl-TryConv-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<T> TryConv for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.try_conv" class="method trait-impl has-srclink"><a href="#method.try_conv" class="anchor"></a><h4 class="code-header">fn <a class="fnname">try_conv</a><T>(self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, Self::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error" title="type core::convert::TryInto::Error">Error</a>><span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a><T>,</span></h4></section></summary><div class='docblock'>Attempts to convert <code>self</code> into <code>T</code> using <code>TryInto<T></code>. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#775">source</a><a href="#impl-TryFrom%3CU%3E-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U> for T<span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Error" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#781">source</a></span><a href="#method.try_from" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#tymethod.try_from" class="fnname">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#760">source</a><a href="#impl-TryInto%3CU%3E-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a><U> for T<span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Error-1" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#766">source</a></span><a href="#method.try_into" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#tymethod.try_into" class="fnname">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-VZip%3CV%3E-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a href="#impl-VZip%3CV%3E-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<V, T> VZip<V> for T<span class="where fmt-newline">where<br> V: MultiLane<T>,</span></h3></section></summary><div class="impl-items"><section id="method.vzip" class="method trait-impl has-srclink"><a href="#method.vzip" class="anchor"></a><h4 class="code-header">fn <a class="fnname">vzip</a>(self) -> V</h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-WithSubscriber-for-Polynomial%3CF%2C%20B%3E" class="impl has-srclink"><a class="srclink rightside" href="https://docs.rs/tracing/0.1.37/src/tracing/instrument.rs.html#334">source</a><a href="#impl-WithSubscriber-for-Polynomial%3CF%2C%20B%3E" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://docs.rs/tracing/0.1.37/tracing/instrument/trait.WithSubscriber.html" title="trait tracing::instrument::WithSubscriber">WithSubscriber</a> for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.with_subscriber" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://docs.rs/tracing/0.1.37/src/tracing/instrument.rs.html#169-171">source</a><a href="#method.with_subscriber" class="anchor"></a><h4 class="code-header">fn <a href="https://docs.rs/tracing/0.1.37/tracing/instrument/trait.WithSubscriber.html#method.with_subscriber" class="fnname">with_subscriber</a><S>(self, subscriber: S) -> <a class="struct" href="https://docs.rs/tracing/0.1.37/tracing/instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch">WithDispatch</a><Self><span class="where fmt-newline">where<br> S: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><<a class="struct" href="https://docs.rs/tracing-core/0.1.22/tracing_core/dispatcher/struct.Dispatch.html" title="struct tracing_core::dispatcher::Dispatch">Dispatch</a>>,</span></h4></section></summary><div class='docblock'>Attaches the provided <a href="https://docs.rs/tracing-core/0.1.22/tracing_core/subscriber/trait.Subscriber.html"><code>Subscriber</code></a> to this type, returning a
|
||
<a href="https://docs.rs/tracing/0.1.37/tracing/instrument/struct.WithDispatch.html" title="WithDispatch"><code>WithDispatch</code></a> wrapper. <a href="https://docs.rs/tracing/0.1.37/tracing/instrument/trait.WithSubscriber.html#method.with_subscriber">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.with_current_subscriber" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://docs.rs/tracing/0.1.37/src/tracing/instrument.rs.html#221">source</a><a href="#method.with_current_subscriber" class="anchor"></a><h4 class="code-header">fn <a href="https://docs.rs/tracing/0.1.37/tracing/instrument/trait.WithSubscriber.html#method.with_current_subscriber" class="fnname">with_current_subscriber</a>(self) -> <a class="struct" href="https://docs.rs/tracing/0.1.37/tracing/instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch">WithDispatch</a><Self></h4></section></summary><div class='docblock'>Attaches the current <a href="https://docs.rs/tracing/0.1.37/tracing/dispatcher/index.html#setting-the-default-subscriber">default</a> <a href="https://docs.rs/tracing-core/0.1.22/tracing_core/subscriber/trait.Subscriber.html"><code>Subscriber</code></a> to this type, returning a
|
||
<a href="https://docs.rs/tracing/0.1.37/tracing/instrument/struct.WithDispatch.html" title="WithDispatch"><code>WithDispatch</code></a> wrapper. <a href="https://docs.rs/tracing/0.1.37/tracing/instrument/trait.WithSubscriber.html#method.with_current_subscriber">Read more</a></div></details></div></details></div><script type="text/json" id="notable-traits-data">{"&[F]":"<h3>Notable traits for <code>&[<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</code></h3><pre class=\"content\"><code><span class=\"where fmt-newline\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Read.html\" title=\"trait std::io::Read\">Read</a> for &[<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</span><span class=\"where fmt-newline\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Write.html\" title=\"trait std::io::Write\">Write</a> for &mut [<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</span>","&[T]":"<h3>Notable traits for <code>&[<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</code></h3><pre class=\"content\"><code><span class=\"where fmt-newline\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Read.html\" title=\"trait std::io::Read\">Read</a> for &[<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</span><span class=\"where fmt-newline\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Write.html\" title=\"trait std::io::Write\">Write</a> for &mut [<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</span>","&[u8]":"<h3>Notable traits for <code>&[<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</code></h3><pre class=\"content\"><code><span class=\"where fmt-newline\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Read.html\" title=\"trait std::io::Read\">Read</a> for &[<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</span><span class=\"where fmt-newline\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Write.html\" title=\"trait std::io::Write\">Write</a> for &mut [<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</span>","&mut [F]":"<h3>Notable traits for <code>&[<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</code></h3><pre class=\"content\"><code><span class=\"where fmt-newline\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Read.html\" title=\"trait std::io::Read\">Read</a> for &[<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</span><span class=\"where fmt-newline\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Write.html\" title=\"trait std::io::Write\">Write</a> for &mut [<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</span>","&mut [T]":"<h3>Notable traits for <code>&[<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</code></h3><pre class=\"content\"><code><span class=\"where fmt-newline\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Read.html\" title=\"trait std::io::Read\">Read</a> for &[<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</span><span class=\"where fmt-newline\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Write.html\" title=\"trait std::io::Write\">Write</a> for &mut [<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</span>","<[T] as Concat<Item>>::Output":"<h3>Notable traits for <code>&[<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</code></h3><pre class=\"content\"><code><span class=\"where fmt-newline\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Read.html\" title=\"trait std::io::Read\">Read</a> for &[<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</span><span class=\"where fmt-newline\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Write.html\" title=\"trait std::io::Write\">Write</a> for &mut [<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</span>","<[T] as Join<Separator>>::Output":"<h3>Notable traits for <code>&[<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</code></h3><pre class=\"content\"><code><span class=\"where fmt-newline\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Read.html\" title=\"trait std::io::Read\">Read</a> for &[<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</span><span class=\"where fmt-newline\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Write.html\" title=\"trait std::io::Write\">Write</a> for &mut [<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>]</span>","Vec<T, A>":"<h3>Notable traits for <code><a class=\"struct\" href=\"https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html\" title=\"struct alloc::vec::Vec\">Vec</a><<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>, A></code></h3><pre class=\"content\"><code><span class=\"where fmt-newline\">impl<A> <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Write.html\" title=\"trait std::io::Write\">Write</a> for <a class=\"struct\" href=\"https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html\" title=\"struct alloc::vec::Vec\">Vec</a><<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>, A><span class=\"where fmt-newline\">where<br> A: <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/core/alloc/trait.Allocator.html\" title=\"trait core::alloc::Allocator\">Allocator</a>,</span></span>","Vec<T, Global>":"<h3>Notable traits for <code><a class=\"struct\" href=\"https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html\" title=\"struct alloc::vec::Vec\">Vec</a><<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>, A></code></h3><pre class=\"content\"><code><span class=\"where fmt-newline\">impl<A> <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Write.html\" title=\"trait std::io::Write\">Write</a> for <a class=\"struct\" href=\"https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html\" title=\"struct alloc::vec::Vec\">Vec</a><<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>, A><span class=\"where fmt-newline\">where<br> A: <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/core/alloc/trait.Allocator.html\" title=\"trait core::alloc::Allocator\">Allocator</a>,</span></span>","Vec<u8, Global>":"<h3>Notable traits for <code><a class=\"struct\" href=\"https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html\" title=\"struct alloc::vec::Vec\">Vec</a><<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>, A></code></h3><pre class=\"content\"><code><span class=\"where fmt-newline\">impl<A> <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Write.html\" title=\"trait std::io::Write\">Write</a> for <a class=\"struct\" href=\"https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html\" title=\"struct alloc::vec::Vec\">Vec</a><<a class=\"primitive\" href=\"https://doc.rust-lang.org/nightly/std/primitive.u8.html\">u8</a>, A><span class=\"where fmt-newline\">where<br> A: <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/core/alloc/trait.Allocator.html\" title=\"trait core::alloc::Allocator\">Allocator</a>,</span></span>"}</script></section></div></main><div id="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="halo2_proofs" data-themes="" data-resource-suffix="" data-rustdoc-version="1.67.0-nightly (70f8737b2 2022-11-23)" data-search-js="search-df80cc3cb87b6482.js" data-settings-js="settings-7e1cf5cc683233f7.js" data-settings-css="settings-af96d9e2fc13e081.css" ></div></body></html> |