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iOS Object-Oriented Swift Complex Data Structures Custom Initializers

nicole lumpkin
PLUS
nicole lumpkin
Courses Plus Student 5,328 Points
Posted by nicole lumpkin
nicole lumpkin
Courses Plus Student 5,328 Points

Not sure what's wrong, appears to be right in Xcode.

Your task is to write a custom initializer method for the object. Using the initializer assign values to the first four properties. Using the values assigned to those properties create a value for the description property that is a string representation of the color object.

For example, given the values 86.0 for red, 191.0 for green, 131.0 for blue and 1.0 for alpha, each of the stored properties should hold these values and the description property should look like this:

"red: 86.0, green: 191.0, blue: 131.0, alpha: 1.0"

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

1 Answer

Jason Anders
MOD
Jason Anders
Treehouse Moderator 145,860 Points
Jason Anders
Jason Anders
Treehouse Moderator 145,860 Points

Hey Nicole,

It's just a little typo... You are missing a colon after "green" in this line:

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

Just add that and everything else looks good! :)

Keep Coding! :dizzy: