是否可以从另一个功能“返回”一个功能？

Question

Due the verbose error handling syntax I've created a function check as below which acts as a "global" error handler. If I want to panic instead to log I change only the check function. The issue is that now I want to simply return so that the other go routines can still run if one has an error. So the question is: How can I do that ? Is it possible?

func main() {
    for k, v := range foo {
        go func() {
            err = doSomething()
            check("this one failed", err)
        }()
    }
}

func check(errMsg string, err error) {
    if err != nil {
        log.Fatalf(errMsg, err)
    }
}

However now I've found that I need return the anonymous function if there is any error rather than exit ( log.Fatal ) so I'm wondering if it's possible to return the anyonymou

Answer 1

There isn't a language feature that allows you to cause the parent function to automatically return in response to a simple function call.

However, there is a way to cause the current goroutine to exit, which might be what you are after: runtime.Goexit. Note that this has similar disruptive potential to calling os.Exit, so it would be bad to call it in the context of goroutines created by other packages or other unrelated code.