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iOS Object-Oriented Swift Inheritance What is Inheritance?

Philip Kuona
Philip Kuona
3,388 Points

What's wrong with my code?

My code tells me its not compiled but with nothing showing under preview. Where is the error? help

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: 10.0, height: 10.0)

}

2 Answers

William Li
PLUS
William Li
Courses Plus Student 26,868 Points

It appears that you're putting the RoundButton class inside the implementation of Button class. This is wrong. Even though RoundButton inherits from its superclass Button, it isn't part of the implementation of Button class.

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: 10.0, height: 10.0)

This should fix it.

Philip Kuona
Philip Kuona
3,388 Points

Awesome! Thank you very much William Li. That fixed it