initialisers.swift

class FullscreenButton: UIButton {
    
    // Convenience initializer
    convenience init(_ screen: UIScreen) {
        // Reusing Designated initializer
        self.init(frame: screen.bounds)
    }
    
    // Initializer overriding
    override init(frame: CGRect) {
        super.init(frame: frame)
    }
    
    // Required initializer
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    // Failable Initializer
    init?(_ screen: UIScreen, with type: UIButton.ButtonType) {
        guard screen.bounds.width > 320 else { return nil }
        super.init(frame: screen.bounds)
    }
    
}