Day10

//                                          **Day 10

//                                           **enum

enum Cityname {

    case USA(Int,Int)

    case Africa(String)

    case Tiland(Float)

}

let likePerson = Cityname.Tiland(0.5)

print("\(likePerson)")

let poor:Cityname = Cityname.Africa("no money,no power! life like a rubbish")

print("\(poor)")

let person_history:Cityname = Cityname.USA(8, 6)

print("\(person_history)")

var string = "this is a string!"

 (string as NSString).length

Day10

原文：http://www.cnblogs.com/tony0571/p/5403154.html