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iOS Object-Oriented Swift Inheritance Inheritance and Initializers

I can't solve this problem I don't see where the error is.

I see errors in the log but I can't find the mistake.

class Button {
  var width: Double
  var height: Double

  init(width:Double, height:Double){
    self.width = width
    self.height = height

  func scaleBy(points: Double){
    width += points
    height += points

class RoundButton: Button {
  var cornerRadius: Double = 5.0

  init(width: Double, height: Double, cornerRadius:Double){
    self.cornerRadius = cornerRadius
    super.init(width:Double, height:Double)

1 Answer

You need to call the super first:

    super.init(width: width, height: height)
    self.cornerRadius = cornerRadius

Hope that helps!


Thanks it was also because I had "width: Double" instead of "width: width"

John Simoneau
John Simoneau
9,326 Points

While the answer is "correct" to pass the question... I'm confused because in the video, he says that you always want to call the super.init() AFTER the self.cornerRadius...