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nam pham
12,270 PointsHow to pass Protocol Challenge in Swift 3
After read direction, I added some code for Protocol "ColorSwitchable". I get error when recheck work. what do I miss anything?
// 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)
}
}
2 Answers
David Pike
3,445 Pointstry
func switchColor(_ color: Color)
as in the challenge it says
make sure your external argument label is omitted by using an underscore
Devin Boddie
6,777 PointsI'm having the same problem even when I add the external argument label the code still won't pass. My code looks like the following:
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)
}
}
Matias Pehkonen
4,158 PointsMatias Pehkonen
4,158 PointsHi! I think that your missing the external argument label from your protocols method.