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?

How to do this: "Create an instance of the class RoundButton and name the instance rounded"?

I'm confused here!

Please help in figuring this out.

Code is attached below.

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.self

1 Answer

Joe Dayvie
Joe Dayvie
11,956 Points

Hammad,

You are very close but you need to pass the parameter for RoundButton - It should look something like this:

var rounded = RoundButton(width: 10, height: 10)

Any number should work - Hopefully that makes sense? :)