Overriding Methods challenge

class Button {
  var width: Double
  var height: Double

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

  func incrementBy(points: Double){ // Method Signature 
    width += points
    height += points
  }
}

class RoundButton: Button {

  override func incrementBy(points: 7.0) -> Double{ // Method Signature not the same as superclass, this one has a return type, when the super class signature does not have a return type. 
    width += points
    height += points

    return super.incrementBy(points) // Not needed 
  }

  var cornerRadius: Double = 5.0
}

class Button {
  var width: Double
  var height: Double

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

  func incrementBy(points: Double){ // Method signature
    width += points
    height += points
  }
}
// On your RoundButton Class you give a default value by first giving it a type, then it’s value
// Also since the name of the parameter “points” is optional, you have to add an underscore. 
// otherwise you would have to explicitly give it a name in its super class: (#points: Double). This won’t work in the challenge tho.
// also remember that in order to override a method, it’s method signature must be the same.


class RoundButton: Button {
override func incrementBy(_ points: Double = 7.0){ // Method signature
    width += points
    height += points
  }
  var cornerRadius: Double = 5.0
}