Beefy Boxes and Bandwidth Generously Provided by pair Networks
Don't ask to ask, just ask
 
PerlMonks  

Re^2: Regexp not capturing in named subrules (leftmost)

by diotalevi (Canon)
on Sep 16, 2009 at 03:01 UTC ( #795511=note: print w/ replies, xml ) Need Help??


in reply to Re: Regexp not capturing in named subrules (leftmost)
in thread Regexp not capturing in named subrules

However, what puzzles me and should be apparent is that nothing at all was captured.

⠤⠤ ⠙⠊⠕⠞⠁⠇⠑⠧⠊


Comment on Re^2: Regexp not capturing in named subrules (leftmost)
Replies are listed 'Best First'.
Re^3: Regexp not capturing in named subrules (leftmost)
by tye (Cardinal) on Sep 16, 2009 at 03:13 UTC

    Since the "leftmost defined buffer" is inside of a group quantified by {0}, it isn't puzzling to me that this buffer didn't match. And it isn't surprising that a buffer that didn't match doesn't capture anything.

    Perhaps you were now expecting thing => undef, contrary to your previously stated expectation? If so, my limited testing shows that %+ keys aren't pre-populated but the values are returned by magic (%+ always appears empty even when $+{moo} returns "o" after 'cow' =~ /(?<moo>o+)/).

    Update: I'm glad to report that the lack of keys in %+ appears to have only been an effect of the quick-hack method I used to test, related to evaluation order problems.

    - tye        

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://795511]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others making s'mores by the fire in the courtyard of the Monastery: (18)
As of 2015-07-07 17:15 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (92 votes), past polls