Re: [FWP] Something like "grepfirst"

["Bill Jones" <bill@fccj.org>]

> 
>> For a 11 less bytes, eleminate the recursion:
>> 
>> sub first_existing_dir {
>>   d: my $d=shift or die;
>>   -d $d ? $d : goto d
>> }
>
> Oh, nice!  This is even better:
> replace recursion with Perl's highly magical goto SUB:
>
>   sub first_existing_dir {
>     my $d=shift or die;
>     -d $d ? $d : goto &first_existing_dir
>   }
>
> Can anyone on this list tell me if Perl does tail recursion elimination?
> I don't think it does; but it provides a way for you to eliminate it
> explicitly.  Shweet.

I got rejected on comp.lang.perl.moderated; but
Stephen Zander <gibreel@pobox.com> told me about:

for (qw(dir0 dir1 /tmp)) { -d && print && last; }


So, it's not a total loss...  ;)
Thanx Stephen!

HAGD!
-Sneex-  :]

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