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iOS Object-Oriented Swift Complex Data Structures Custom Initializers

Posted by John Wetherbee
John Wetherbee
1,467 Points

I need your help my Treehouse friends.

Can you show me the correct code. I've tried various codes and cannot solve.

Thank you very much!

John

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: 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)"
    }
}

2 Answers

Jason Anders
MOD
Jason Anders
Treehouse Moderator 145,858 Points
Jason Anders
Jason Anders
Treehouse Moderator 145,858 Points

Hey John,

You pretty much have it! :thumbsup: There is just a small syntax error when you declare the description variable in the Struct. You have used the equal sign instead of a colon. Doing this, the compiler thinks String is trying to be assigned to the variable, which is causing the syntax error. Just fix that up and you're good to go. :)

Keep Coding! :) :dizzy:

John Wetherbee
John Wetherbee
1,467 Points

Thanks very much for that Jason!

Brandon Mahoney
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Brandon Mahoney
iOS Development with Swift Techdegree Graduate 30,149 Points
Brandon Mahoney
.a{fill-rule:evenodd;}techdegree seal-36
Brandon Mahoney
iOS Development with Swift Techdegree Graduate 30,149 Points

You just forgot self.

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
      self.description = "red: \(red), green: \(green), blue: \(blue), alpha: \(alpha)"
  }
}
John Wetherbee
John Wetherbee
1,467 Points

Thanks Brandon! Your suggestion helped me solve the problem! Yay!!!

John