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iOS

What is the significance of parameters in this initializer method?

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

let description: String

// Add your code below

// why do I need to specify names of colors here ->?

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 self.description = "red: (red), green: (green), blue: (blue), alpha: (alpha)"

}

}

1 Answer

Is this what you are looking for below? self refers to the constants at the top that were declared in the struct. The initializers are setting those values.

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 = red
        self.green = green
        self.blue = blue
        self.alpha = alpha
        self.description = "red: (red), green: (green), blue: (blue), alpha: (alpha)"
    }
}

//This is how you would call the init.
let color = RGBColor.init(red: 86.0, green: 191.0, blue: 131.0, alpha: 1.0)
print(color.red)

Also this is how you can format your code for the forum.

```Swift
    //Your code goes here
``` //Followed by 3 more back ticks