Beefy Boxes and Bandwidth Generously Provided by pair Networks
more useful options

Re: Regexp explanation

by eXile (Priest)
on Apr 03, 2004 at 17:54 UTC ( #342325=note: print w/replies, xml ) Need Help??

in reply to Regexp explanation

In addition to all answers you already have, in understanding/learning regex-en YAPE::Regex::Explain can be very useful:
use YAPE::Regex::Explain; print YAPE::Regex::Explain->new(qr/((\w|')+)/)->explain(); __DATA__ The regular expression: (?-imsx:((\w|')+)) matches as follows: NODE EXPLANATION ---------------------------------------------------------------------- (?-imsx: group, but do not capture (case-sensitive) (with ^ and $ matching normally) (with . not matching \n) (matching whitespace and # normally): ---------------------------------------------------------------------- ( group and capture to \1: ---------------------------------------------------------------------- ( group and capture to \2 (1 or more times (matching the most amount possible)): ---------------------------------------------------------------------- \w word characters (a-z, A-Z, 0-9, _) ---------------------------------------------------------------------- | OR ---------------------------------------------------------------------- ' '\'' ---------------------------------------------------------------------- )+ end of \2 (NOTE: because you're using a quantifier on this capture, only the LAST repetition of the captured pattern will be stored in \2) ---------------------------------------------------------------------- ) end of \1 ---------------------------------------------------------------------- ) end of grouping ----------------------------------------------------------------------

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://342325]
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others musing on the Monastery: (5)
As of 2017-05-27 14:28 GMT
Find Nodes?
    Voting Booth?