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iOS Object-Oriented Swift Inheritance What is Inheritance?

Allie Kench
Allie Kench
1,129 Points
Posted by Allie Kench
Allie Kench
1,129 Points

Inheritance Challenge

What am I missing? I am supposed to: Create an instance of the class RoundButton and name the instance rounded.

1 Answer

Marc Schultz
Marc Schultz
23,356 Points
Marc Schultz
Marc Schultz
23,356 Points

You cannot create an instance of the class RoundButton because it does not exist yet. Your objective is to create this class. After you did that, put ": Button" behind the class name to inherit from the already existing Button class.

class RoundButton: Button {
    var cornerRadius = 5.0
}

var rounded = RoundButton() // you forget to call the constructor of the inherited class Button

var rounded = RoundButton(width: 10.0, height: 20.0)
Allie Kench
Allie Kench
1,129 Points
Allie Kench
Allie Kench
1,129 Points

I have already done this. I am on the last step.

This is what I have so far:

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()