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iOS Object-Oriented Swift Inheritance Overriding Methods

Swift Code Challenge: Overriding incrementBy func

I am trying to override the "incrementBy func" so that I can implement it in the roundButton class and add the correct point parameter of 7.0.

This is how I'm implement the override in the roundButton class

class RoundButton: Button { var cornerRadius: Double = 5.0 override func incrementBy(points: Double = 7.0)-> Double{

} }

Should I be looking at the incrementBy that needs to be used in the roundButton class as a method signature eve if it doesn't include the keyword "return?"

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
}

2 Answers

Michael Liendo
Michael Liendo
15,326 Points

Since the original incrementBy function doesn't have a return type then you wouldn't need to put one in the new one. Instead, simply take that out, put an underscore _ followed by a space, and then write points: Double = 7.0 as your parameter.

Hope this helps, you were super close to getting it! Keep up the good work!

Awesome that worked! Thank you Michael!