Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

Abdurahman Sharif
Abdurahman Sharif
1,205 Points
Posted by Abdurahman Sharif
Abdurahman Sharif
1,205 Points

im stuck on this challenge, can someone help.please

i keep getting the error "Bummer! You forgot to add 'points' to the property 'width' within the 'incrementBy' method."

when i put my return in as return width + points

what is it supposed to look like, and also, how do i return more than one thing? because i have to add points to my height property inside the method..

thanks you

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) -> Double {
       return width + points
}
}

3 Answers

Vrund Patel
Vrund Patel
11,994 Points
Vrund Patel
Vrund Patel
11,994 Points

You need to use 

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

Here's the full code: 

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
  }
}

Hope this helps!

Abdurahman Sharif
Abdurahman Sharif
1,205 Points
Abdurahman Sharif
Abdurahman Sharif
1,205 Points

yes it did thankk you so much!!

but why dont we have to call what its going to return?

-----> func incrementBy(points: Double) -> Double {

and also how come we dont have to write our return function in our method? like he did in the video

Vrund Patel
Vrund Patel
11,994 Points
Vrund Patel
Vrund Patel
11,994 Points

Because you are not returning anything in this case. You just need to increment the height and the width. In the video he was returning the variable.

Abdurahman Sharif
Abdurahman Sharif
1,205 Points
Abdurahman Sharif
Abdurahman Sharif
1,205 Points

oh ok!!..thanks for the help