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iOS Object-Oriented Swift 2.0 Complex Data Structures Custom Initializers

Chris Lopez
Chris Lopez
8,155 Points
Posted by Chris Lopez
Chris Lopez
8,155 Points

What am I doing wrong?

the error is: Bummer! Don't use the memberwise initializer Swift creates. Add your own custom initializer as specified in the directions

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: \(self.red), green: \(self.green), blue: \(self.blue), alpha: \(self.alpha)"

    }
}

1 Answer

James Knight
James Knight
4,680 Points
James Knight
James Knight
4,680 Points

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)" }

The init method is used to construct the instance of the struct using values passed in as parameters. The values given in the challenge are just examples, not to be hard-coded.

So, the init method takes four parameters, RGB & A. You've done the description one correctly; that's the hard bit!!

So, modify your method to take the four color parameters, and the assign the values passed in to the stored properties inside the method.

James

Chris Lopez
Chris Lopez
8,155 Points
Chris Lopez
Chris Lopez
8,155 Points

Thanks! That worked!