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docs: Use "msg!" instead of "info!" (#14411) 

* docs: Use "msg!" instead of "info!"

* Update docs/src/developing/deployed-programs/developing-rust.md

Co-authored-by: Michael Vines <mvines@gmail.com>

* Fix typo / format

Co-authored-by: Michael Vines <mvines@gmail.com>
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Jon Cinque 2021-01-04 20:49:09 +01:00 committed by GitHub
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docs/src/developing/deployed-programs/developing-rust.md
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@ -276,24 +276,24 @@ getrandom = { version = "0.1.14", features = ["dummy"] }
Rust's `println!` macro is computationally expensive and not supported. Instead
the helper macro
[`info!`](https://github.com/solana-labs/solana/blob/7ddf10e602d2ed87a9e3737aa8c32f1db9f909d8/sdk/program/src/log.rs#L10)
[`msg!`](https://github.com/solana-labs/solana/blob/6705b5a98c076ac08f3991bb8a6f9fcb280bf51e/sdk/program/src/log.rs#L33)
is provided.
`info!` has two forms:
`msg!` has two forms:
```rust
info!("A string");
msg!("A string");
```
or
```rust
info!(0_64, 1_64, 2_64, 3_64, 4_64)
msg!(0_64, 1_64, 2_64, 3_64, 4_64);
```
Both forms output the results to the program logs. If a program so wishes they
can emulate `println!` by using `format!`:
```rust
info!(&format!("Some varialbe: {:?}", variable));
msg!("Some variable: {:?}", variable);
```
The [debugging](debugging.md#logging) section has more information about working
@ -333,8 +333,8 @@ Then provide a custom implementation of the panic handler:
#[cfg(all(feature = "custom-panic", target_arch = "bpf"))]
#[no_mangle]
fn custom_panic(info: &core::panic::PanicInfo<'_>) {
solana_program::info!("program custom panic enabled");
solana_program::info!(&format!("{}", info));
solana_program::msg!("program custom panic enabled");
solana_program::msg!("{}", info);
}
```