dongshang1529 2016-12-22 03:37
浏览 23
已采纳

Golang闭包从范围中捕获错误的值

test codes below:

func main() {
    lans := [5]string{"java", "python", "erlang", "cpp", "go"}
    fin := make(chan bool)
    for _, l := range(lans) {
        go func() {
            fmt.Println(l)
            }()
    }
     <- fin
}

I think the output will be: java, python, erlang, cpp, go; but the output is: go go go go go; what's wrong here?

  • 写回答

1条回答 默认 最新

  • dongxue9997 2016-12-22 03:38
    关注

    just write the function like this, to catch the verb l into function

     go func(l string) {
         fmt.Println(l)
     }(l)
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论

报告相同问题?