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Alexander Certosimo
1,774 Pointswhy += is needed?
My question is related to this challenge question. Why is it that within the incrementBy function we cant say width = width + points and we need to use width += points?
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) {
width += 7.0
height += 7.0
}
}
1 Answer
William Li
Courses Plus Student 26,868 Pointswe cant say width = width + points and we need to use width += points?
Yes you can.
width += points is just a shorthand for width = width + points, when writing your own code, you may use either one that you prefer.