33 lines
842 B
Swift
33 lines
842 B
Swift
//
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// Clamped.swift
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// secant-testnet
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//
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// Created by Francisco Gindre on 10/20/21.
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//
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// credits: https://iteo.medium.com/swift-property-wrappers-how-to-use-them-right-77095817d1b
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import Foundation
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/**
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Limits a value to an enclosing range
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*/
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@propertyWrapper
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public struct Clamped<Value: Comparable> {
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private var value: Value
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private let range: ClosedRange<Value>
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public var wrappedValue: Value {
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get { value }
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set { value = clamp(newValue, using: range) }
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}
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init(wrappedValue: Value, _ range: ClosedRange<Value>) {
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self.value = wrappedValue
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self.range = range
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value = clamp(wrappedValue, using: range)
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}
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private func clamp(_ value: Value, using range: ClosedRange<Value>) -> Value {
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min(range.upperBound, max(range.lowerBound, value))
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}
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}
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