golang 常量与枚举

package main

import "fmt"

func main() {
    const (
        cpp = iota
        java
        python
        php
        javascript
    )

    fmt.Println(cpp,javascript,java,python,php)
}

• 如果我们不想要某个值咋写呢?

package main

import "fmt"

func main() {
    const (
        cpp = iota
        _
        python
        php
        javascript
    )

    fmt.Println(cpp,javascript,python,php)
}

• 这样 Java 就会被跳过了

package main

import "fmt"

func main() {

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

    fmt.Println(b , kb , mb,gb ,tb,pb)
}

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