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Jayven Nhan
Courses Plus Student 1,956 PointsWhy width:width and height:height? What is the idea behind this?
I need a bit of clarification on this one...
class Button {
var width: Double
var height: Double
init(width:Double, height:Double){
self.width = width
self.height = height
}
func scaleBy(points: Double){
width += points
height += points
}
}
class RoundButton: Button {
var cornerRadius: Double = 5.0
init(width:Double,height:Double,cornerRadius:Double){
self.cornerRadius = cornerRadius
super.init(width:width, height:height)
}
}
1 Answer
Enara L. Otaegi
13,107 PointsWhen you make an instance of RoundButton you do it like this:
let roundButton = RoundButton(width: 14, height: 5, cornerRadius: 2)
So the RoundButton init method takes 14 and 5 in variables named width and height and pass them to the super.init method.
super.init(width: width //this is the 14 stored in a variable called width and the same goes for height