//枚举的定义
enum KindOfAnimal {
 case Cat
 case Dog
 case Cow
 case Duck
 case Sheep
} 

 //你也可以这样定义枚举类型
enum KindOfAnimalTwo {
 case Cat, Dog, Cow, Duck, Sheep
 }

//定义枚举变量并赋值
var animal1: KindOfAnimal = KindOfAnimal.Cat

var animal2: KindOfAnimal = .Dog 

//在Switch…Case中使用枚举
switch animal1 {
 case KindOfAnimal.Cat:
 println("Cat")
 case KindOfAnimal.Dog:
 println("Dog")
 case KindOfAnimal.Cow:
 println("Cow")
 case KindOfAnimal.Duck:
 println("Duck")
 case KindOfAnimal.Sheep:
 println("Sheep")
 default:
 println("error = 呵呵")
}

//给枚举赋值
enum City: String{
 case Beijing = "北京"
 case ShangHai = "上海"
 case GuangZhou = "广州"
 case ShengZhen = "深圳"
}

//定义枚举变量并赋值
var myInCity: City = City.Beijing

//获取枚举变量的值
var myInCityString: String = myInCity.rawValue;
println(myInCityString) //输出：北京

//通过枚举成员的值，来给枚举成员赋值
var youInCity: City? = City(rawValue: "北京");

//取出youInCity中的值
if youInCity == City.Beijing {
 var cityName: NSString = youInCity!.rawValue
 println(cityName) //输出：北京
}

//传入一个枚举中没有的值
var testCity: City? = City(rawValue: "京");

// testCity为nil
println(testCity)

//枚举值自增
enum Hour: Int{
 case One = 1
 case Two
 case Three
 case Four
 case Five
 case Six
 case Seven
 case Eight
}

var hourTest: Int = Hour.Eight.rawValue
println(hourTest) // hourTest = 8

//枚举的关联值
enum mobileLanguage{
 case IOS (String, String)
 case Android (String)
}

var iPhone: mobileLanguage = mobileLanguage.IOS("Objective-C", "Swift")

switch iPhone {
 case mobileLanguage.IOS(let language1, let language2):
 println("language1 = \(language1), language2 = \(language2)")
 
 case mobileLanguage.Android(let temp):
 println(temp);
 default:
 println("NO")
}

//输出结果：language1 = Objective-C, language2 = Swift

//枚举函数
enum mobileLanguageFun{
 case IOS (String, String)
 case Android (String)
 //定义枚举函数
 var description: String{
 switch self {
 case mobileLanguageFun.IOS(let language1, let language2):
 return "language1 = \(language1), language2 = \(language2)"
 
 case mobileLanguageFun.Android(let temp):
 return temp
 default:
 return ("NO")
 }

 }
}

var myMobile: mobileLanguageFun = mobileLanguageFun.IOS("objc", "swift")

println(myMobile.description) //language1 = objc, language2 = swift