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Andis Slaitas
3,430 PointsI don't get it - how do I implement a change?
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) {
WifiLamp.switchColor() // how do I set the correct argument?
}
}
2 Answers
Michael Reining
10,101 PointsHi Andis,
The problem is in your implementation. The protocol is not implemented correctly.
You cannot call the switchColor function inside the declaration of the switchColor function.
The challenge is just asking you to set the color of the WifiLamp to the new color. This is done like this.
func switchColor(color: Color) {
self.color = color
}
The entire code now looks like this.
// 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) {
// Update the color of the lamp (self) and set it to the new color
self.color = color
}
}
I hope that helps,
Mike
PS: Thanks to the awesome resources on Team Treehouse, I just launched my first app. :-)
Andis Slaitas
3,430 PointsThank you Mike! I must have been tired.
Michal Sverak
3,797 PointsMichal Sverak
3,797 PointsAwesome, thank you Michael I was also stuck on this one. Congrats on releasing your own app! What is? Send me a link I would love to see it :)
Michal