Swift enumeration Code

1. Enumeration definition: Use the enum keyword to place their entire definition within a pair of curly braces

Enum Someeumeration

{

Enumeration definition goes here

}

2. Use of enumerations:

Enum Gender

{

Case Male

Case Female

}

Let WW

{

Case. Male:

Print ("Nan Ren")

Case Gender.female:

Print ("NV ren")

}

3. The associated value of the enumeration:

Enum Gender

{

Case Male (String)

Case Femla (int, string)//indicates that any type can be associated, and the data associated with each case can be different

}

Let Wd=gender.male ("male")

Switch WD

{

Case. Male (Let X):

Print ("Zhe shi Yi ge \ (x)")

Case. Female:

Print ("NV ren")

}

Let Hy=gender.female ("Zhang")

Swich WD

{

Case. Male (Let X):

Print ("Zhe shi Yi ge \ (x)")

Case Let. Female (x, y)://equals x and Y are let

Print ("NV ren")

}

4. Native value

Native value, all native values must be unique
Enum Status:int
{
Case Unapproved
Case approved
Case X=5//=1 on the error
Case Y
Case A
}
Let goods=status.approved
Goods.rawvalue

Swift enumeration Code