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iOS Object-Oriented Swift Inheritance Overriding Methods

Our RoundButton class should have its own implementation of the incrementBy method. Can you please tell me whereis error

Please tell me how to fix it

class Button {
  var width: Double
  var height: Double

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

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

class RoundButton: Button {
  var cornerRadius: Double = 5.0

 override func incrementBy(_points: Double = 7.0) {

1 Answer

Iulian Popescu
Iulian Popescu
1,363 Points

I think that when you declared the parameter name you typed "points" instead " points". This caused two errors I think: one for using an undeclared variable and second is for not respecting Apple requirements when declaring a function with default values. This is how your function should look :

 override func incrementBy(_ points: Double = 7.0) {