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christophervouga
8,592 PointsWhy isn't this working?
This works in a playground.
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){
width += points
height += points
}
}
1 Answer
Michael Reining
10,101 PointsHi Christopher,
You need to set the points parameter equal to seven inside the method. Otherwise if you call the method and insert a new value such as 10, it will accept the new value.
You can easily test this in the playground.
Here is the code that worked for me.
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(var points: Double){
points = 7 // set points to 7
width += points
height += points
}
}
// For testing in playground
let roundButton = RoundButton(width: 5, height: 5)
roundButton.incrementBy(10) // the points value always gets reset to 7
roundButton.height
I hope that helps,
Mike
PS: Thanks to the awesome resources on Team Treehouse, I launched my first app.
Now you can practice writing Swift code directly on your iPhone :-)