Beefy Boxes and Bandwidth Generously Provided by pair Networks
The stupid question is the question not asked

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??
I think it's important to note that \1 is not a variable (which is why you can't use it outside of a regex);
But you can, sometimes, use it in the replacement part.
think it's important to note that \1 is not a variable (which is why you can't use it outside of a regex); the variable that contains the contents of the first capture group is $1, but that's empty until the capture has completed.
But in /([0-9]+){$1}/, the first capture is completed before the quantifier. So, that's not the reason.
For example, /\+32767.{32767}/ is rejected at compile time
Yes, but that's considered a bug. It's a restriction that should have been removed after the regexp engine was no longer recursive.
“Why, then,” you ask, “is something like /(.)\1/, which suffers from the same compilation problem, OK?”
That's not the same problem. {...} is one of the mini-languages inside regular expressions. Compare it with [...]. [\1] doesn't refer back to something else either.

But one can defer a subpattern. The syntax is (??{ }). This is what the OP wants, and this is what the OP ought to use.

In reply to Re^2: Regex fun by JavaFan
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?Last hourOther CB clients
Other Users?
Others having an uproarious good time at the Monastery: (2)
As of 2024-06-25 09:28 GMT
Find Nodes?
    Voting Booth?

    No recent polls found

    erzuuli‥ 🛈The London Perl and Raku Workshop takes place on 26th Oct 2024. If your company depends on Perl, please consider sponsoring and/or attending.