Re: Regex backreference without capture (?&NAME) NamedCapture

in reply to Regex backreference without capture

? So you want @x = qw( first third ) ;

This "works"

dd( 'bogus firstblahjokeblahthird bogus' =~ m/
(first)
(?&patblah)
.*?
(?&patblah)
(third)
(?(DEFINE)
    (?<patblah>blah)
)
/sx );
__END__
("first", "third", undef)
[download]

The undef comes from the named capture (?<patblah>blah) which takes up slot $3 in this pattern, which is why (?(DEFINE) is placed at the end

Comment on Re: Regex backreference without capture (?&NAME) NamedCapture Select or Download Code

Replies are listed 'Best First'.
Re^2: Regex backreference without capture (?&NAME) NamedCapture by QM (Parson) on Mar 05, 2019 at 10:33 UTC
Thanks. But does this do backreferences? I see it matches the same pattern, but that's not the same as a backreference. But thanks, that makes me think about the problem differently. Edited to add: ------------------ I'm considering using named capture groups, where there's a need to have a well-defined return value. Which is something PCRE has, and some people (!) can't live without, apparently. -QM -- Quantum Mechanics: The dreams stuff is made of	[reply]
Re^2: Regex backreference without capture (?&NAME) NamedCapture by rsFalse (Chaplain) on Mar 05, 2019 at 12:34 UTC
E.g. the input is `"bogus firstblAHj?keblOWthird bogus"`, and pattern is `'bl..'`, then it matches both, but OP would like to match only the same :)	[reply] [d/l] [select]

In Section Seekers of Perl Wisdom