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

I am not sure how to add "points" to the "incrementBy" method?

I'm unsure on how to add the points parameter to the width property

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) {
  }
}

1 Answer

Hi Zachary,

The trick is to assign the points parameter to both data members inside the body of the incrementBy method:

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
  }
}