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iOS Object-Oriented Swift Inheritance Overriding Methods

Posted by Ikjap Singh
Ikjap Singh
Courses Plus Student 1,852 Points

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

Button.swift 
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) {
    super.incrementBy(points)
    }
}

1 Answer

Iulian Popescu
Iulian Popescu
1,363 Points
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) {
        super.incrementBy(points)
 }