Enums in Xcode 7 beta 3

Enum.swift

import Foundation

enum Number: Int {
  case Zero
  case One
  case Two
  case Three
}

enum NumberString: String {
  case Zero
  case One
  case Two
  case Three
}

let zero: Number = .Zero // .Zero
let numberZero = zero.rawValue // 0

let one: Number = .One // .One
let numberOne = one.rawValue // 1

let zeroNumber: NumberString = .Zero // .Zero
let zeroNunberString = .Zero.rawValue // "Zero"