What's the meaning of this code?
func main() {
f := g()
f()
}
func g() func() {
Top:
return func() { returnfrom Top, nil}
}
On Thursday, September 13, 2018 at 3:29:03 PM UTC-4, Scott Pakin wrote:
>
> I recently added to the Go 2 Error Handling Feedback
> <https://github.com/golang/go/wiki/Go2ErrorHandlingFeedback> page my
> thoughts on how to improve upon the draft design for error handling
> <https://go.googlesource.com/proposal/+/master/design/go2draft-error-handling.md>
> :
>
> Go 2 error handling based on non-local returns
> <https://gist.github.com/spakin/86ea86ca48aefc78b672636914f4fc23>
>
>
> You can read the details by clicking on that link, but the idea is to
> introduce a single new keyword, returnfrom, that a function can use to
> return from a lexically enclosing scope. Thus, one can define an error
> handler—as an ordinary function, not a handle. One can check any status
> type—unlike check, which is limited to error. And one can stack error
> handlers, but this is explicit, not implicit as in handle.
>
> Personally, I find returnfrom to be a better solution than check/handle
> while still retaining the key benefits of that approach. See what you
> think.
>
> — Scott
>
>
--
You received this message because you are subscribed to the Google Groups
"golang-nuts" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to golang-nuts+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
