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Re^2: Backref in a regex quantifier

by webfiend (Vicar)
on Jul 09, 2007 at 18:10 UTC ( #625675=note: print w/replies, xml ) Need Help??

in reply to Re: Backref in a regex quantifier
in thread Backref in a regex quantifier

Here's a marginally more clever version of your solution, which relies on the placeholder capabilities of a /g search. I mention it because I think it's a tiny bit more readable than the version you wrote. But ... you know ... personal preference and all that.

use strict; use warnings; my $test_string = "3 xyz"; # Start a global search # It looks like the expected pattern includes a space. Let's put it he +re. if ( $test_string =~ m/^(\d+) /g ) { my $length = $1; # Pick up the search where our first match left off. if ( $test_string =~ m/\G(.{$length})/ ) { my $result = $1; # Do stuff with $result ... } }

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