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iOS

Posted by Vladimir Poplavskiy
Vladimir Poplavskiy
1,417 Points

Can't pass the task with custom init() method in the workspace of treehouse

Your task is to write a custom initializer method for the object. Using the initializer assign values to the first four properties. Using the values assigned to those properties create a value for the description property that is a string representation of the color object. For example, given the values 86.0 for red, 191.0 for green, 131.0 for blue and 1.0 for alpha, each of the stored properties should hold these values and the description property should look like this: "red: 86.0, green: 191.0, blue: 131.0, alpha: 1.0" Note: Init methods typically list parameters in the same order of property declaration. For this task, stick to the order red,green,blue,alpha.

struct RGBColor {
    let red: Double
    let green: Double
    let blue: Double
    let alpha: Double

    let description: String

    // Add your code below
    init (redColor: Double, greenColor: Double, blueColor: Double, alphaColor: Double){
      red = redColor
      green = greenColor
      blue = blueColor
      alpha = alphaColor
      description = "red: \(red), green: \(green), blue: \(blue), alpha: \(alpha)"
   }
}

1 Answer

Jordi Gámez
Jordi Gámez
3,568 Points

Hi Vladimir,

Here you are the answer:

The only difference I see is that you have changed the name of the constants in the initializer. I just use "self." inside the initializer because I use the same name of the constant and the parameters.

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

Regards

Vladimir Poplavskiy
Vladimir Poplavskiy
1,417 Points

Thank's a lot.