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iOS Object-Oriented Swift Complex Data Structures Custom Initializers

Peng Xiao
Peng Xiao
850 Points

Please help me understand this problem at hand. How do I use a correct String Interpolation?

I do not understand the code challenge at hand. It wants me to use a string interpolation and I do not understand much of the details on what is actually needed of me. I would do me good if you can explain to me what I am doing wrong. Thank you.

structs.swift
struct RGBColor {
  let red: Double
  let green: Double
  let blue: Double
  let alpha: Double

  let description: String

  init () {
  self.red = 86.0
  self.green = 191.0 
  self.blue = 131.0 
  self.alpha = 1.0 
  }

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

1 Answer

You have alot of it right it looks like. Look at the beginning of your init it needs to have the actual constants it is working with.

init(red: Double, green: Double, blue: Double, alpha: Double){ self.red = 86.0 self.green = 191.0 self.blue = 131.0 self.alpha = 1.0 self.description = "red: (red), green: (green), blue: (blue), alpha: (alpha)"