Go基础之枚举类型

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package main

import "fmt"

//枚举
//GO语言没有枚举的关键字
//而是通过定义一组常量来实现

func enums() {
const (
cpp = 0
java = 1
python = 2
golang = 3
)

const (
iPhone = 2 * iota //iota表示自增值
_
iPad
iMac
iPod
)

const (
b = 1 << (10 * iota)
kb
mb
gb
tb
pb
)

fmt.Println(cpp, java, python, golang)
fmt.Println(iPhone, iPad, iMac, iPod)
fmt.Println(b, kb, mb, gb, tb, pb)
}

func main() {
enums()
}

执行结果:

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0 1 2 3
0 4 6 8
1 1024 1048576 1073741824 1099511627776 1125899906842624