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 Overriding Methods

When I override the method it keeps giving me an error even though they look the same

I am trying to implement the method in the subclass. I did the override and the underscore and even wrote in the height and width so the code would pretty much be the same as in the base class. Can someone please tell me what i'm doing wrong? The error is saying the i did not implement the function and the "points" is undeclared.

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 += points
    height += points
  }
}

class RoundButton: Button {
  var cornerRadius: Double = 5.0

  override func incrementBy(_points: Double = 7.0) {
 width += points
 height += points
  }
}

1 Answer