提供if语句发出的函数返回 [英] Provide function return from an if statement issues

问题描述

我无法从golang的if语句中返回函数的预期return语句.

I'm having trouble returning a function's expected return statement from within an if statement in golang.

我提供了以下代码:

package main

import (
    "fmt"
)

func random() string {
    var x = "return"

    if x == "return" {
        return x
    }
}
func main() {
    fmt.Println(random())
}

主函数不是应该打印出随机函数返回的字符串值吗?我所能得到的只是

Shouldn't the main function print out the string value returned by the random function?All i get is

go.go:13: missing return at end of function

有人知道如何做到这一点吗?

Does anybody have a clue how to make this happen?

推荐答案

即使该函数返回值，即使从未使用过，您也必须在其末尾添加一个return:

You have to include a return at the end, even if it is never used, if the function returns a value:

http://play.golang.org/p/XFsPL2G15R

func random() string {
    var x = "return"

    if x == "return" {
        return x
    }
    return ""
}
func main() {
    fmt.Println(random())
}

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