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iOS Protocols in Swift Protocol Basics Protocols With Methods

Posted by Arief Widyananda
Arief Widyananda
16,129 Points

wifilamp challenge, need help

i dont understand why its still bummer?

protocols.swift 
// 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)
    }

   // is this correct? 
    func switchColor(color: Color) {
        self.color = color

    }
}

1 Answer

Chris Stromberg
PLUS
Chris Stromberg
Courses Plus Student 13,389 Points
Chris Stromberg
Chris Stromberg
Courses Plus Student 13,389 Points

The challenge asks that you omit the external parameter name. You need to use an _ with your protocol.

protocol ColorSwitchable {
  func switchColor(_ color: Color) 
}