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iOS Object-Oriented Swift Classes and Objects Classes and Their Methods

Posted by Daniel Loren
Daniel Loren
10,318 Points

How can I add points to both height and width in the same method?

I tried two return statements but it does not work

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) {
    return self.width = width + points
    return self.height = height + points
  }
}

1 Answer

Michael Hulet
Michael Hulet
47,913 Points
Michael Hulet
Michael Hulet
47,913 Points

It doesn't seem like there's a need to return anything.. Just have the function return Void and let it increment the instance variables, like this:

func incrementBy(points: Double) -> Void {
    width += points
    height += points
}

If you must return both the width & height (which it doesn't seem like it's the case), you can return both of them in a tuple, like this:

func incrementBy(points: Double) -> (newWidth: Double, newHeight: Double){
    width += points
    height += points
    return (newWidth: width, newHeight: height)
}
Daniel Loren
Daniel Loren
10,318 Points

Thank you Sir! Make total sense. And thank you for showing me the += sign totally forgot about it. Makes the code way cleaner