code review 7322043: spec: clarify that f(g()) requires that g return >= 1 value

spec: clarify that f(g()) requires that g return >= 1 value

Fixes issue 4573.

[rsc, 2013-02-09 18:48:43]

Hello golang-dev@googlegroups.com,

I'd like you to review this change to
https://code.google.com/p/go/

[bradfitz, 2013-02-09 19:35:05]

LGTM
 On Feb 9, 2013 10:48 AM, <rsc@golang.org> wrote:

> Reviewers: golang-dev_googlegroups.com,
>
> Message:
> Hello golang-dev@googlegroups.com,
>
> I'd like you to review this change to
> https://code.google.com/p/go/
>
>
> Description:
> spec: clarify that f(g()) requires that g return >= 1 value
>
> Fixes issue 4573.
>
> Please review this at
https://codereview.appspot.**com/7322043/<https://codereview.appspot.com/7322...
>
> Affected files:
>   M doc/go_spec.html
>
>
> Index: doc/go_spec.html
> ==============================**==============================**=======
> --- a/doc/go_spec.html
> +++ b/doc/go_spec.html
> @@ -2765,13 +2765,14 @@
>  </p>
>
>  <p>
> -As a special case, if the return parameters of a function or method
> +As a special case, if the return values of a function or method
>  <code>g</code> are equal in number and individually
>  assignable to the parameters of another function or method
>  <code>f</code>, then the call <code>f(g(<i>parameters_of_g</**i>))</code>
>  will invoke <code>f</code> after binding the return values of
>  <code>g</code> to the parameters of <code>f</code> in order.  The call
> -of <code>f</code> must contain no parameters other than the call of
> <code>g</code>.
> +of <code>f</code> must contain no parameters other than the call of
> <code>g</code>,
> +and <code>g</code> must have at least one return value.
>  If <code>f</code> has a final <code>...</code> parameter, it is
>  assigned the return values of <code>g</code> that remain after
>  assignment of regular parameters.
>
>
> --
>
> ---You received this message because you are subscribed to the Google
> Groups "golang-dev" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to
golang-dev+unsubscribe@**googlegroups.com<golang-dev%2Bunsubscribe@googlegrou...
> .
> For more options, visit
https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/o...
> .
>
>
>

[rsc, 2013-02-09 19:46:26]

*** Submitted as https://code.google.com/p/go/source/detail?r=9f7179fbede0 ***

spec: clarify that f(g()) requires that g return >= 1 value

Fixes issue 4573.

R=golang-dev, bradfitz
CC=golang-dev
https://codereview.appspot.com/7322043