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iOS Object-Oriented Swift Inheritance What is Inheritance?

Posted by Luis Casillas
Luis Casillas
Courses Plus Student 1,671 Points

What type of instance are they asking?

I wrote an instance as they did in the tutorial for the sub class "RoundButton" but instead I get unresolved indentifier. Unless I'm supposed to input values for width and height but I'm not prompted to do so.

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
  }
}
  let rounded = RoundButton()

1 Answer

Vrund Patel
Vrund Patel
11,994 Points
Vrund Patel
Vrund Patel
11,994 Points

The code is a bit misplaced and it is

var rounded = RoundButton(width:10 , height: 10)

Full code:

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 , height: 10)

Hope this helps!

Luis Casillas
Luis Casillas
Courses Plus Student 1,671 Points

It's still giving me the same answer. 'unresolved identifier' unfortunately.

Vrund Patel
Vrund Patel
11,994 Points

Did you make sure that the braces are accurate. Try copy-paste the code above. It works for me .