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iOS

Posted by louis cornacchia
louis cornacchia
1,708 Points

challenge question problems Not clear why this is not working.

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

let description: String

// Add your code below init () { red = 86.0 green = 191.0 blue = 131.0 alpha = 1.0 description = "red: (red), green: (green), blue: (blue), alpha: (alpha)" } }

1 Answer

David Papandrew
David Papandrew
8,386 Points
David Papandrew
David Papandrew
8,386 Points

Hi Louis,

Your init method isn't quite right.

1) You need to add the parameters to the initializer (in the parentheses after the keyword "init")

2) You don't want to hardcode values into the initializer (at least not for this example). Instead, you will be using the parameter arguments passed in when the function is called (this will be clearer when you see the code below).

Here is the 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

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

Now if you want to create a RGBColor object (and print to see the description string), you can do this in Playgrounds:

let myRGBColor = RGBColor(red: 86.0, green: 191.0, blue: 131.0, alpha: 1.0)
print(myRGBColor.description)

Hope that helps.