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Darius Moravcik
6,879 PointsHow can I create custom initiliazer?
I've tried different methods, but can't get this code to work. As far as I can tell, I am creating a custom initializer, but I keep getting an error saying: Don't use member-wise initializer, but create a custom....
Any idea what I'm doing wrong?
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, description: String) {
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)"
}
}
2 Answers
David Lin
35,864 PointsYou don't need "description" as an input parameter, since it is composed by the other input parameter values. Also, don't "hard-code" set values to the struct's properties. Just assign the input parameter values to them.
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: \(self.red), green: \(self.green), blue: \(self.blue), alpha: \(self.alpha)"
}
}
Darius Moravcik
6,879 PointsOh that makes much more sense now. Thank you for the explanation.
David Lin
35,864 PointsYou're welcome! Cheers!