Re: Returning an array reference or nothing

On 07.06.2010 10:43, Florian Weimer wrote:
> Is the following the correct code sequence to return an array
> reference or nothing (if result is 0) from an XS function?
>
>         PPCODE:
>           AV *result = 0;
>           if (some_condition) {
>               result = newAV();
>               av_push(result, some_value);
>           }
>           if (result) {
>               EXTEND(SP, 1);
>               PUSHs(newRV_inc((SV*)result));
>           }
>
> It's not mentioned in perlxs, but some CPAN modules seem to use this.

Looks correct, yes.  And it does appear in `perldoc perlxs'; look under 
"Returning Undef And Empty Lists".