Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Swift 2.0 Protocols Swift 2.0 Protocols Protocols With Methods

Cody Adkins
Cody Adkins
7,260 Points

Im pretty sure I am lost on this objective.

Without judging how far off I am, can someone help show me how this is supposed to be properly set up.

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

  func switchColor(color: Color) 
  ( RGB: Double, Double, Double, Double)

  }
}

1 Answer

Here you go:

protocol ColorSwitchable {
    func switchColor(color: Color)
}

. . .

class WifiLamp: ColorSwitchable {
    let state: LightState
    var color: Color

    init() {
        self.state = .On
        self.color = .RGB(0,0,0,0)
    }

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