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Start your free trialNACHO MERINO
1,216 PointsCode challenge init, struct, method
In the editor, I’ve declared a struct named RGBColor that models a color object in the RGB space.
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"
The error says that i'm not using the correct string interpolation. Don't understand what's going on.
Some help here!
struct RGBColor {
let red: Double
let green: Double
let blue: Double
let alpha: Double
let description: String
// Add your code below
init custom ( red: Double, green: Double, blue: Double, alpha: Double, description: (String)) {
self.red = 10.1
self.green = 10.2
self.blue = 10.3
self.alpha = 0.5
self.description = "red: \(red), green: \(green), blue: \(blue), alpha: \(alpha)"
}
}
1 Answer
Matthew Long
28,407 PointsLooks like you're really close. You tried giving your init method a name though? So remove custom
after init
. Next, you don't need to include description: String
as a parameter, we are creating the description
with the other parameters.
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) {
self.red = 10.1
self.green = 10.2
self.blue = 10.3
self.alpha = 0.5
self.description = "red: \(red), green: \(green), blue: \(blue), alpha: \(alpha)"
}
}
Also, you didn't have to give it default values:
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)"
}
var myColor = RGBColor(red: 10.1, green: 10.2, blue: 10.3, alpha: 0.5)
NACHO MERINO
1,216 PointsNACHO MERINO
1,216 Pointsthanks mate! it works now