Regexp::MatchContext - zmienne w wzorcu - Article 52324 - go-pugleaf

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Article #52324

Regexp::MatchContext - zmienne w wzorcu

#52324

From: piecia aka dracorp
Date: Fri, 02 Dec 2011 20:56

40 lines
1858 bytes

Witam
Może ktoś używał i wie dlaczego dla modułu Regexp::MatchContext nie 
ustawiane są zmienne $MATCH, PREMATCH i $POSTMATCH gdy w wzorcu występują 
zmienne?

#v+
use Regexp::MatchContext -vars;
use re 'eval';
my $str = 'foobarbaz';
my $pattern = 'bar';
$str =~ /(?p) $pattern /x;
print "PRE:",$PREMATCH, "\n";
print "MATCH:",$MATCH, "\n";
print "POST:",$POSTMATCH, "\n"; 
#v-

Po uruchomieniu:
#v+
Use of uninitialized value $PREMATCH in print at regex.pl line 33.
PRE:
Use of uninitialized value $MATCH in print at regex.pl line 34.
MATCH:
Use of uninitialized value $POSTMATCH in print at regex.pl line 35.
POST:
#v-

Jeśli tylko zamienić wyszukiwanie na:
$str =~ /(?p) bar /x; 
to działa prawidłowo tzn:
#v+
PRE:foo
MATCH:bar
POST:baz  
#v-

http://search.cpan.org/~dconway/Regexp-MatchContext/

-- 
piecia aka dracorp
pisz na: piotr kropka rogoza at wp kropka eu

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From: piecia aka dracorp <imie.nazwisko@wp.eu>
Newsgroups: pl.comp.lang.perl
Subject: Regexp::MatchContext - zmienne w wzorcu
Date: Fri, 2 Dec 2011 20:56:20 +0000 (UTC)
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