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iOS Object-Oriented Swift Inheritance What is Inheritance?

Emmet Lowry
Emmet Lowry
10,196 Points

Hi i'm stuck on the last challenge of inheritance. It asks me to Create an instance of the class RoundButton and ...

name the instance rounded. I thought i answered it correctly but it wont let me pass it help is appreciated.

Button.swift
class Button {
  var width: Double
  var height: Double

  init(width:Double, height:Double){
    self.width = width
    self.height = height
  }
  class RoundButton : Button {
  var cornerRadius = 5.0
  }
}

var rounded = RoundButton(width: 12, height: 15)

7 Answers

Like this:

class Button {
  var width: Double
  var height: Double

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

class RoundButton : Button {
  var cornerRadius = 5.0
 }

var rounded = RoundButton(width: 12, height: 15)
Emmet Lowry
Emmet Lowry
10,196 Points

Yes that should work

Your RoundButton class should be outside of the inherited class.

Remember your RoundButton class is a Sub Class to Button. So take it outside of the Super Class (Button) and you should be good to go.

Emmet Lowry
Emmet Lowry
10,196 Points

Is what I've written right apart from the RoundButton class being inside the super class Button. Thanks for help

Emmet Lowry
Emmet Lowry
10,196 Points

actually fixed it thanks for help

Glad you got it working! You wrote it correctly, just needed to put the RoundButton class below the brackets of the Button class.