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iOS Object-Oriented Swift 2.0 Complex Data Structures Custom Initializers

Rohan Thakar
Rohan Thakar
1,579 Points

Hi Im unable to understand the question. pls help me out with it. i did the code from what i understood

i tried it on playgrounds an error comes stating cannot used red as an instance variable.

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
         let description = "red:\(self.red), green: \(green), blue:\(blue), alpha:\(alpha)"
    }
   }

1 Answer

Jeremy Stewart
Jeremy Stewart
1,545 Points

Hey Rohan,

A few errors here.

1) The description needs to be added before the initializer. So let description = String 2) Now you need to call on the initializer and format this a little differently than you have: self.description = ("red: (self.red), green: (self.green), blue: (self.blue), alpha: (self.alpha)")