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iOS Object-Oriented Swift Complex Data Structures Custom Initializers

Matthew Sharikov
Matthew Sharikov
5,767 Points

Swift 3 - Custom Initializers

Can someone please help me out with this problem?

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 = 86.0
        self.green = 191.0
        self.blue = 131.0
        self.alpha = 1.0
        self.description = "red: \(red), green: \(green), blue: \(blue), alpha: \(alpha)"
    }

var myRGB = RGBColor(red: 30.0, green: 100.0, blue: 41.0, alpha: 15.0)

2 Answers

Jason Anders
MOD
Jason Anders
Treehouse Moderator 145,860 Points

You're probably going to kick yourself for this one :)

Everything is correct, except you added the init outside the closing curly brace for the struct. Just move that closing curly brace to after your code (put the init inside the struct) and all is good. :)

:dizzy:

Akshay Jain
Akshay Jain
2,576 Points

Hello Jason, could you explain why the self.description = syntax works? I understand the string interpolation but why the ("red:) and not just ("(red))? sorry if the parenthesis make my question confusing, I just don't understand the purpose of red: etc. Matthew please let me know if you see this before Jason does lol...thank you!

Matthew Sharikov
Matthew Sharikov
5,767 Points

Thank you Jason once again!