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iOS Object-Oriented Swift Inheritance Overriding Methods

Posted by christophervouga
christophervouga
8,592 Points

Why doesn't it work?

this works in playground

Button.swift 
class Button {
var width: Double
var height: Double
    init(width:Double, height:Double){
        self.width = width
        self.height = height
    }
    func incrementBy(points: Double){
        width += points
        height += points
    }
}
class RoundButton: Button  {
    var cornerRadius: Double = 5.0
    override func incrementBy(points:Double = 7.0) {
        super.incrementBy(points)
    }
}

1 Answer

Jhoan Arango
Jhoan Arango
14,575 Points
Jhoan Arango
Jhoan Arango
14,575 Points

Hello Christopher:

You are on the right track, and I would have also done a parameter default as you did. But here is what you want to do to pass the challenge. 

class RoundButton: Button  {
    var cornerRadius: Double = 5.0

    override func incrementBy(points: Double ) {
        width = 7.0
        height = 7.0
    }
}