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iOS Object-Oriented Swift Complex Data Structures Custom Initializers

Ruben Mercado
Ruben Mercado
1,933 Points
Posted by Ruben Mercado
Ruben Mercado
1,933 Points

it says im not using string interpolation

the error says to use string interpolation but its not working

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: \(red), green: \(green), blue: \(blue), alpha: \(alpha)"
}
var myColor = RGBColor(red: 10.8, green: 10.8, blue: 10.7, alpha: 10.9)
Peter Correa
Peter Correa
17,155 Points
Peter Correa
Peter Correa
17,155 Points

Hi, it might be due to the fact that you have the body of the init in the same body of the struct. After fixing it, xcode ran the example with no issues. 

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)"
    }
}
var myColor = RGBColor(red: 10.8, green: 10.8, blue: 10.7, alpha: 10.9)

1 Answer

Matthew Long
Matthew Long
28,407 Points
Matthew Long
Matthew Long
28,407 Points

Almost everyone has trouble with this challenge and you're closer to the solution than most. You're basically just missing the curly braces for your initializer.

struct RGBColor {
  let red: Double
  let green: Double
  let blue: Double
  let alpha: Double

  let description: String

  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)"
  }
}

Keep up the good work! :smile: