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Start your free trialSebastian Fernandez
2,413 Pointsi don't know what is wrong
pls help! y don't understand how to write the method
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 = 86.0
self.green = 191.0
self.blue = 131.0
self.alpha = 1.0
}
}
1 Answer
Mitch Little
11,870 PointsHi Sebastian,
An initialiser method essentially sets the parameters for the Class when it is initialised and assigns the argument provides to the stored properties of the Class
Your initialiser method is correct, however you have hardcoded the values in so the stored properties will always remain as the value you have set.
You should assign the values taken in the Class initialiser to the stored properties:
init(red: Double, green: Double, blue: Double, alpha: Double) {
self.red = red
self.green = green
self.blue = blue
self.alpha = alpha
}
init(red: Double, green: Double, blue: Double, alpha: Double) {
self.red = red
self.green = green
self.blue = blue
self.alpha = alpha
}
This initialiser takes the arguments provided for its parameters and assigns them to the stored properties of the class.
When creating a class initialiser you must be exhaustive and provided values for all of the stored properties. The challenge then asks you to create a custom description for the description stored property. You can do this with string interpolation:
self.description = "red: \(red), green: \(green), blue: \(blue), alpha: \(alpha)"
I believe the example provided by the challenge has confused the matter slightly.
I recommend that you take some time to go over this as it is constantly used in Swift and other Object-Oriented programming languages. Don't threat though, this course confused myself also but now it comes naturally.
All the best,
Mitch
Sebastian Fernandez
2,413 PointsSebastian Fernandez
2,413 Pointsthanks man, you are awesome ? ?
Mitch Little
11,870 PointsMitch Little
11,870 PointsYou are very welcome dude!
Good luck!