Swift bit operation exercise

//
//  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/id881256329

extension BinaryInteger {
    var binaryDescription: String {
        var binaryString = ""
        var internalNumber = self
        for counter in (1...self.bitWidth) {
            binaryString.insert(contentsOf: "\(internalNumber & 1)", at: binaryString.startIndex)
            internalNumber >>= 1
            if 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 & 0x0000FF

print(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)