array of button listeners swift
class ViewController: UIViewController {
@IBOutlet weak var verticalStackView: UIStackView!
var allButtons = [UIButton]()
override func viewDidLoad() {
super.viewDidLoad()
for case let horizontalStackView as UIStackView in verticalStackView.arrangedSubviews {
for case let button as UIButton in horizontalStackView.arrangedSubviews {
allButtons.append(button)
}
}
}
}