Hi
Sorry for not getting back sooner.
OK, a practical example of what I want to do. Lets say that every letter in the following string represents a number from 0 to 100 or whatever.
$thisstring = "abjdkwosyksljadfkjadfaduifalkdjfaslflksdf";
now lets say that the letter H represents some function, I would want 

$thisstring =~ /H/;
to match all the sequences of 5 or fewer numbers that were equal to 10. Clearly writing the function H is trivial in this instance, and I would be able just to go shooting through the string and compute this without recourse to a regexp but for more complex examples (where for example there are gaps between them), eg 3 numbers less than 10 followed by any 5 numbers followed by 4 numbers equal in sum to 10 - stuff like that.
Am I talking rubbish or can perl offer me a shortcut to doing this ?
Thanks
Specimen

In reply to Re: is this a regexp question ? by Anonymous Monk
in thread is this a regexp question ? by Anonymous Monk

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


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.