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 Complex Data Structures Custom Initializers

Please help with this

Please help with this

structs.swift
struct RGBColor {
  let red: Double
  let green: Double
  let blue: Double
  let alpha: Double

  let description: String

  // Add your code below
  init(red,green,blue,alpha){
  red.self = red
  green.self = green
  blue.self = blue
  alpha.self = alpha
  }
  description = "red: \(red),green: \(green),blue: \(blue),alpha: \(alpha)"
}

2 Answers

Hi there,

That looks mainly fine, bar some spacing issues in your string - there's a few issues, though:

The description assignment needs to be inside your init method, so move the closing braces to after that.

You want to have the self keyword before the stored property name, like: self.red = red.

You need to put types on your parameters; they are all of type Double.

That all looks like:

  init(red: Double, green: Double, blue: Double, alpha: Double){
    self.red = red
    self.green = green
    self.blue = blue
    self.alpha = alpha 
    description = "red: \(red), green: \(green), blue: \(blue), alpha: \(alpha)"
  }

Steve.

Use this code:

  struct RGBColor {
  let red: Double
  let green: Double
  let blue: Double
  let alpha: Double
  let description: String
  // Add your code below
  init(red: Double, green: Double, blue: Double, alpha: Double) {
  self.red = red
  self.green = green
  self.blue = blue
  self.alpha = alpha
  description = "red: \(red), green: \(green), blue: \(blue), alpha: \(alpha)"
  }
  }