Beefy Boxes and Bandwidth Generously Provided by pair Networks
We don't bite newbies here... much

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
You're claiming $1 is "empty" until the the capture has completed. I'm pointing that the in the case of the OP, said first capture has completed.

I guess that the quotes around ‘empty’ are to point out that, besides the unusual choice of word (in place of ‘undefined’), it's not true—sorry, I'll correct that.

I agree that Hena's second solution doesn't suffer from the problem that I mentioned; but the post particularly asks for a single-regex solution, and I was just mentioning why the obvious substitute, /\+([0-9]+)[$bases]{$1}/, for the non-working regex /\+([0-9]+)[$bases]{\1}/, doesn't work. (Nobody suggested it anyway, so I guess it was pretty unclear what I was talking about.)

No, I don't. The current regexp-engine isn't re-entrant.

Yes, which is why I thought that the final word in “the regexp engine was no longer recursive” might be ‘re-entrant’. :-) (I don't know enough history to know whether it ever was re-entrant, so, for all I knew, the grammar was correct.) I was particularly confused because Perl 5.10 newly allows for recursive regexes, which I confused with the regex engine itself being recursive; but ikegami clarified.

In reply to Re^5: Regex fun by JadeNB
in thread Regex fun by Hena

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?

What's my password?
Create A New User
Domain Nodelet?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others wandering the Monastery: (3)
As of 2023-06-01 05:56 GMT
Find Nodes?
    Voting Booth?

    No recent polls found