Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

iOS Protocols in Swift Protocol Basics Protocols With Methods

Posted by Chyngyzkan Samatov
Chyngyzkan Samatov
1,731 Points

HELP ME PLEASE

WHY IT'S NOT WORKING ?

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)
  }

  func switchColor(_ color: Color) {
    Color.hsb(123.3, 223.3, 323.3, 423.3)
  }
}

1 Answer

Jhoan Arango
Jhoan Arango
13,603 Points

Hello,

The challenge is asking you to set the WifiLamp object to a "new color".

So for example: 

// **** Step 1
// If I was to make an instance of Wifi Lamp, I would do so like this

// Instance
let myWifiLamp = WifiLamp()

// **** Step 2
// If I wanted to change the color of the lamp I would have to call the "switchColor" method

 myWifLamp.switchColor(Color.rgb(123.3, 223.3, 323.3, 423.3))

// OR

let myNewColor = Color.hsb(22.0, 22.0, 22.0, 22.00)
wifiLamp.switchColor(myNewColor)

So in order to implement this method what shall we do? 

  func switchColor(_ color: Color) {
    self.color = color
  }

Hope this helps you a bit.

Chyngyzkan Samatov
Chyngyzkan Samatov
1,731 Points

I got it Thanks a lot man! May God bless u million times! Appreciate it!)