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Farhan Khan
17,530 Pointsprotocols with methods challenge
protocols with methods challenge 2 - 2 how to solve it?
// 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 {
let state: LightState
var color: Color
init() {
self.state = .on
self.color = .rgb(0,0,0,0)
}
func switchColor(color: Color){
self.color = Color
}
}
1 Answer
Jennifer Nordell
Treehouse TeacherHi there! I received your request for assistance 
self.color = Color you're trying to set the color property to a Color type. Take a look:
protocol ColorSwitchable { func switchColor(_ color: Color) }
// enums removed to shorten the code displayed
class WifiLamp : ColorSwitchable { // make the WifiLamp conform to the protocol you've declared.
let state: LightState
var color: Color
init() {
self.state = .on
self.color = .rgb(0,0,0,0)
}
func switchColor(_ color: Color){ // The function's parameters must match the ones in the declaration of the protocol so the _ is needed here
self.color = color //This sets color to the color that was sent in which is of type Color
}
}
Hope this helps!
