Go基础之枚举类型

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:

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