xcode - 遍历对象/变量 Swift

Question

如何在 Swift 中遍历对象/变量。我可以在附加对象时创建一个数组或字典，这样我就不必为每个按钮编写代码了吗？我是一个 nubie 所以请像我四岁一样跟我说话。提前感谢您的帮助。

import UIKit
class ViewController: UIViewController {

@IBOutlet weak var button1: UIButton!
@IBOutlet weak var button2: UIButton!
@IBOutlet weak var button3: UIButton!
...


override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    self.button1.alpha = 0.0
    self.button2.alpha = 0.0
    self.button3.alpha = 0.0
    ...
}

Answer 1

import UIKit
class ViewController: UIViewController {

    @IBOutlet weak var button1: UIButton!
    @IBOutlet weak var button2: UIButton!
    @IBOutlet weak var button3: UIButton!
    var arrayOfButtons = [UIButton]()


override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    arrayOfButtons = [button1, button2, button3]
    for button in arrayOfButtons {
        button.alpha = 0.0
    }
}