On Fri, Feb 16, 2007 at 01:03:32PM -0500, Andrew Dunstan wrote: > David Fetter wrote: > >> > >>The question is, what is the use case? If there is one in Perl, can > >>this proposed function API support it? > >> > > > >Perl makes the following variables available in any regex match, > >although it optimizes some cases for when they're not there: > > > >$1, ... $n (captured matches in parentheses) > >$` (pre-match) > >$' (post-match) > >$& (whole match) > > > > Use of any of these is notoriously costly, BTW, especially pre-match > and post-match. See perlre man page.
This is why they only appear when called for :) Cheers, D -- David Fetter <[EMAIL PROTECTED]> http://fetter.org/ phone: +1 415 235 3778 AIM: dfetter666 Skype: davidfetter Remember to vote! ---------------------------(end of broadcast)--------------------------- TIP 7: You can help support the PostgreSQL project by donating at http://www.postgresql.org/about/donate
