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iOS Object-Oriented Swift Inheritance Inheritance and Initializers

Josh Schlabach
Josh Schlabach
1,771 Points

I don't understand why this won't work

When I first started the challenge, before I edited anything I clicked "Check Work." It said that I needed a super.init. I've been looking for help on the forums on this, and I realized people were using an overridden method for this challenge. I don't quit understand why we can't use a super.init. Can someone explain?

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

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


I am confused on the question because your code shows that you are calling the super.init() method. You can't only use that method because in the subclass, RoundButton, you need to init the cornerRadius property.