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 Inheritance What is Inheritance?

I'm stuck with last challenge, and i don't know what's wrong with the code

i get bummer with this answer

Button.swift
class Button {
  var width: Double
  var height: Double


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

  class RoundButton: Button {
    var cornerRadius: Double = 5.0
  }
}

var rounded = RoundButton(width: 6, height: 7)
William Choi
William Choi
6,121 Points

Its because your width and height values have been set as doubles, and you are putting in Int values, example, width: 6.0

2 Answers

thanks will!!

hi william, not because i give the value of the width and height

this is the message from the bummer

swift_lint.swift:16:15: error: use of unresolved identifier 'RoundButtton'

var rounded = RoundButtton(width: 6.0, height: 15.0)

William Choi
William Choi
6,121 Points

Oh right haha um yeah try having the RoundButton class outside of the Button Class