Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Object-Oriented Swift Complex Data Structures Custom Initializers

Posted by Nathan Halydier
Nathan Halydier
1,849 Points

I keep getting "Make sure you're not using the memberwise initializer provided by default". Not sure what I am missing.

I am able to accomplish what the exercise wants like this in xcode, but i can't seem to get past that error in the treehouse IDE.

init(red: Double, green: Double, blue: Double, alpha: Double, description: String) {
    self.red = red
    self.green = green
    self.blue = blue
    self.alpha = alpha
    self.description = "red: \(red), green: \(green), blue: \(blue), alpha: \(alpha)"



}

}

let color = RGBColor(red: 86.0, green: 191.0, blue: 131.0, alpha: 1.0, description:"")

color.description

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

1 Answer

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,967 Points

You don't need to pass in description. The description is built from the other values passed in.