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

Roderick Royce
Roderick Royce
1,236 Points
Posted by Roderick Royce
Roderick Royce
1,236 Points

How do I add the "points" parameter to the "height" to the incrementBy Method? This is a class - init - func challenge.

class Button { var width: Double var height: Double

init(width:Double, height:Double){
    self.width = width
    self.height = height
}

func incrementBy(points: Double) {
}

// how do I add points to the width and height properties?

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 {
  }
}

1 Answer

Dylan Shine
Dylan Shine
17,565 Points
Dylan Shine
Dylan Shine
17,565 Points 
class Button {
  var width: Double
  var height: Double

  init(width:Double, height:Double){
    self.width = width
    self.height = height
  }

  func incrementBy(points: Double)  {
      height += points
  }
}

If I'm understanding this correctly, you simply want to define a method that increments your points property by the number of points passed to incrementBy. Since the return type for this is void (nothing), we don't need to strongly type it. We then use the += operator to add the points to the buttons height. You may need to prefix height with self.