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Start your free trialAdam Petritsis
2,942 PointsWhich is the right way to change the lamp color?
For this task, make WifiLamp adopt the ColorSwitchable protocol. In the implementation of the method, simply set the color of the lamp to the new color.
// Declare protocol here
protocol ColorSwitchable {
func switchColor(_ color: 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) -> Color {
}
}
1 Answer
Daniel Santos
34,969 PointsThere is a little problem in the protocol declaration and that is that the switchColor
function doesn't return a Color
.
Also, in the implementation of the switchColor
, you will have to assign the color from the argument to the instance member color. For example:
func switchColor(_ color: Color) {
self.color = color
}
Fix the protocol declaration and let me know if you have any other questions.
-Dan
Adam Petritsis
2,942 PointsAdam Petritsis
2,942 PointsThank you Daniel that worked. It had passed the first step of the exercise with the function returning Color, so i thought that was correct.
Daniel Santos
34,969 PointsDaniel Santos
34,969 PointsGreat! That is probably because Pasan Premaratne is not testing for it in that particular step.