swift - 希望更好地理解Swift函数

我不熟悉Swift，有很多重复的代码。例如，如何将以下代码更改为不同的函数：
实施例1

if let button = view.viewWithTag(12) as? UIButton {
            // change any properties of the button as you would normally do
            button.isHidden = true
        }

实施例2

var oneAPlayer = AVAudioPlayer()
var oneBPlayer = AVAudioPlayer()
var oneCPlayer = AVAudioPlayer()
var oneDPlayer = AVAudioPlayer()
var twoAPlayer = AVAudioPlayer()
var threeAPlayer = AVAudioPlayer()
var fourAPlayer = AVAudioPlayer()
let oneASound = Bundle.main.path(forResource: "1-a", ofType: "mp3")
let oneBSound = Bundle.main.path(forResource: "1-b", ofType: "mp3")
let oneCSound = Bundle.main.path(forResource: "1-c", ofType: "mp3")
let oneDSound = Bundle.main.path(forResource: "1-d", ofType: "mp3")
let twoASound = Bundle.main.path(forResource: "2-a", ofType: "mp3")
let threeASound = Bundle.main.path(forResource: "3-a", ofType: "mp3")
let fourASound = Bundle.main.path(forResource: "4-a", ofType: "mp3")

最佳答案

我不必为此使用新函数。我会这样写：

let soundNames = ["1-a", "1-b", "1-c", "1-d", "2-a", "3-a", "4-a"]
let sounds = soundNames.map{ Bundle.main.path(forResource: $0, ofType: "mp3") }