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Re: how to get the String as regularexpression

by reneeb (Chaplain)
on Oct 03, 2006 at 14:20 UTC ( #576082=note: print w/ replies, xml ) Need Help??


in reply to how to get the String as regularexpression

Have a look at the qr-operator

sample:

#!/usr/bin/perl use strict; use warnings; my $extensions = qr/\.doc|\.gif/; my @files = qw(test.doc test.gif test.png test.jpg); for(@files){ if($_ =~ $extensions){ print "yes\n"; } }


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Re^2: how to get the String as regularexpression
by davorg (Chancellor) on Oct 03, 2006 at 14:43 UTC

    qr// doesn't change the way that the string is interpolated into a regex - it simply precompiles the string into a regex (see the documentation).

    Using qr// with the code from the original post won't fix the problem. You have fixed the problem by dropping the spurious '|' from the start of the regex.

    --
    <http://dave.org.uk>

    "The first rule of Perl club is you do not talk about Perl club."
    -- Chip Salzenberg

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