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Version: go

语法

常量的定义格式：const identifier [type] = value

const Pi = 3.14159

const b string = "abc"

const c1 = 2/3

赋值​

const beef, two, c = "eat", 2, "veg"
const Monday, Tuesday, Wednesday, Thursday, Friday, Saturday = 1, 2, 3, 4, 5, 6
const (
    Monday, Tuesday, Wednesday = 1, 2, 3
    Thursday, Friday, Saturday = 4, 5, 6
)

枚举​

const (
    Unknown = 0
    Female = 1
    Male = 2
)

iota​

const (
    a = iota
    b = iota
    c = iota
)
// a=0, b=1, c=2

// 简化  
const (
    a = iota
    b
    c
)