Swift 位运算练习
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Swift 位运算练习
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//
// main.swift
// Ultimate
//
// Created by Mewlan Musajan on 5/7/21.
//
// Excerpt From: Apple Inc. “The Swift Programming Language (Swift 5.3).” Apple Books. https://books.apple.com/us/book/the-swift-programming-language-swift-5-4/id881256329extension BinaryInteger {var binaryDescription: String {var binaryString = ""var internalNumber = selffor counter in (1...self.bitWidth) {binaryString.insert(contentsOf: "\(internalNumber & 1)", at: binaryString.startIndex)internalNumber >>= 1if counter % 4 == 0 {binaryString.insert(contentsOf: "_", at:binaryString.startIndex)}}return "0b" + binaryString}
}let pink: UInt32 = 0xCC6699
let redComponent = (pink & 0xFF0000) >> 16
let greenComponent = (pink & 0x00FF00) >> 8
let blueComponent = pink & 0x0000FFprint(pink.binaryDescription)
print(redComponent.binaryDescription)
print(greenComponent.binaryDescription)
print(blueComponent.binaryDescription)
print()
print(pink.binaryDescription)
print("&")
print(Int32(0xFF0000).binaryDescription)
print("===")
print((pink & 0xFF0000).binaryDescription)
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