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iOS Object-Oriented Swift Complex Data Structures Custom Initializers

Posted by irem gürel
irem gürel
5,732 Points

what is wrong with this?

struct RGBColor { let red: Double = 86.0 let green: Double = 191.0 let blue: Double = 131.0 let alpha: Double = 1.0

let description: String

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

structs.swift 
struct RGBColor {
  let red: Double = 86.0
  let green: Double = 191.0
  let blue: Double = 131.0
  let alpha: Double = 1.0

  let description: String

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

1 Answer

Jeff McDivitt
Jeff McDivitt
23,970 Points
Jeff McDivitt
Jeff McDivitt
23,970 Points

You are close but you need to initialize the variables first

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)")
    }
}