Swift - 类型嵌套（以扑克牌结构体为例）

//类型嵌套
struct Poker{
	//花色枚举
	enum Suit:String{
		case Heart="红桃", Club="草花", Diamond="方片", Spade="黑桃"
	}
	
	//面值枚举
	enum Number:Int{
		case Two=2,Three,Four,Five,Six,Seven,Eight,Nine,Ten
		case Jack,Queen,King,Ace
	}
	
	let suit:Suit
	let number:Number
	
	func description(){
		println("这张牌的花色是\(suit.rawValue())，牌的面值是\(number.rawValue())")
	}
}

let card = Poker(suit:.Heart, number:.Three)
card.description() //这张牌的花色是红桃，牌的面值是3