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iOS Object-Oriented Swift 2.0 Complex Data Structures Custom Initializers

Jan Veldhuis
Jan Veldhuis
3,371 Points
Posted by Jan Veldhuis
Jan Veldhuis
3,371 Points

Can't get it right...

Any help? Keep referring to memberwise initializers..

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

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

Hi Jan,

You've passed description into the init method.

The description is made up of the other parameters - it is initialized inside the init method but not passed in as a parameter. 

    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)"
    }

Make sense?

Steve.