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iOS Object-Oriented Swift Inheritance What is Inheritance?

Carlos Alvarez Avila
Carlos Alvarez Avila
4,463 Points
Posted by Carlos Alvarez Avila
Carlos Alvarez Avila
4,463 Points

its asking me to Create an instance of the class RoundButton and name the instance rounded.

it says RoundButton is an unresolved identifier

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, height: 15)

1 Answer

Ryan Jin
Ryan Jin
15,337 Points
Ryan Jin
Ryan Jin
15,337 Points

You have to declare the RoundButton class outside the 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, height: 15)