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Start your free trialanthony fontes
12,405 Pointsstuck on 2nd part of challenge, I can't seem to find the "new color" it's asking for
Am i missing something on the challenge?
// Declare protocol here
protocol ColorSwitchable {
func switchColor(color: Color) -> Double
}
enum LightState {
case On, Off
}
enum Color {
case RGB(Double, Double, Double, Double)
case HSB(Double, Double, Double, Double)
}
class WifiLamp: ColorSwitchable {
let state: LightState
var color: Color
init() {
self.state = .On
self.color = .RGB(0,0,0,0)
}
func switchColor(color: Color) -> Double {
return ??? /* I don't see a new color anywhere */
}
}
1 Answer
Steven Deutsch
21,046 PointsHey anthony fontes,
You're close! What you need to fix is the return type of your switchColor method and the body of the switchColor method. The return type of this method is Void, so you need to change that in the protocol and in the implementation of the WifiLamp class. The reason this method is returning Void is because we don't want any value back when we calling it. We simply want to change the value of the WifiLamp's color property to the Color we pass in when calling this method.
Inside the body of the switchColor method, you can refer to self.color, which will be the color property of the WifiLamp instance you are calling this method on. Then you assign it the value of the color argument you are passing in. This is very similar to how you assign a value to a property using an initializer. An initializer is simply a special kind of method!
// Declare protocol here
protocol ColorSwitchable {
func switchColor(color: Color)
}
enum LightState {
case On, Off
}
enum Color {
case RGB(Double, Double, Double, Double)
case HSB(Double, Double, Double, Double)
}
class WifiLamp: ColorSwitchable {
let state: LightState
var color: Color
init() {
self.state = .On
self.color = .RGB(0,0,0,0)
}
func switchColor(color: Color) {
self.color = color
}
}
Good Luck!
anthony fontes
12,405 Pointsanthony fontes
12,405 PointsThanks man!
Peter Bishop
Courses Plus Student 4,052 PointsPeter Bishop
Courses Plus Student 4,052 PointsOMG I was stuck on this one for ages too Anthony.