in reply to Regex: find all trailing numerical digits in a string

As dragonchild points out above, if all you care about is

a final series of numbers
then all you need is /\d+$/. Add parentheses to capture that, and you have the answer above. Will that not work?

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Re^2: Regex: find all trailing numerical digits in a string
by Fletch (Bishop) on Dec 06, 2004 at 18:09 UTC

    Well you really don't even need parens if you can live with $& or substr( $str, $-[0], $+[0] - $-[0] ) . . . </nit> :)

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[select]

      It would seem to me that $& would be more readable than substr( $str, $-[0], $+[0] - $-[0] ). 

      use strict;

while(<DATA>)
{
  chomp;
  /\d+$/;
  print "Numeric: [$&]\n";
}

__DATA__
asdf_sadf-3i897sdyf33987
3w45t-wevt453_838475693

      [download]

      Is there a case where you would use the substr over $&?

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      OSUnderdog
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        $& slows down every regex in the entire application. Generally, you shouldn't use it unless you literally have no other way of doing things.

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