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iOS Object-Oriented Swift Complex Data Structures Custom Initializers

Posted by Gopin Cherupally
.a{fill-rule:evenodd;}techdegree
Gopin Cherupally
iOS Development Techdegree Student 74 Points

Please help with this

Please help with this

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

2 Answers

Steve Hunter
Steve Hunter
57,712 Points
Steve Hunter
Steve Hunter
57,712 Points

Hi there,

That looks mainly fine, bar some spacing issues in your string - there's a few issues, though:

The description assignment needs to be inside your init method, so move the closing braces to after that.

You want to have the self keyword before the stored property name, like: self.red = red.

You need to put types on your parameters; they are all of type Double.

That all looks like:

  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)"
  }

Steve.

Saud Alfaris
Saud Alfaris
1,084 Points
Saud Alfaris
Saud Alfaris
1,084 Points

Use this code:

  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)"
  }
  }