Swift枚举代码

1、枚举的定义：使用ENUM关键词把它们整个定义放在一对大括号内

enum SomeEumeration

{ 

 //enumeration definition goes here

}

2、枚举的使用：

enum Gender

{

 case Male

 case Female

}

let ww

{

case .Male:

print("nan ren")

case Gender.Female:

print("nv ren")

}

3、枚举的关联值：

enum Gender

{

case Male(string)

case Femla(int , string )//表示可以关联任意类型，每个case关联的的数据可以不一样

}

let wd=Gender.Male("男")

switch wd

{

case .Male(let x):

print("zhe shi yi ge \(x)")

case.Female:

Print("nv ren")

}

let hy=Gender.Female(19,"zhang")

swich wd

{

case.Male(let x):

print("zhe shi yi ge \(x)")

case let.Female(x,y)://相当于x与y都是let

print("nv ren")

}

4、原生值

//原生值，所有原生值都必须唯一
enum Status:int
{
case UnApproved
case Approved
case X=5 //=1就报错
case Y
case A
}
let goods=Status.Approved
goods.rawValue

 

转载于:https://www.cnblogs.com/tyty/p/4937278.html