RE: Matching at least $x words out of @words

golfed for fun...

    my @words = qw( foo bar foobar );
    my $re = qr/@{[map "(?=.*(\Q$_\E))?", @words]}/x;
    my @matches = grep defined, "foo bar baz" =~ $re

Greg

-----Original Message-----
From: [email protected] [mailto:[email protected]] 
Sent: Friday, May 06, 2005 12:22 PM
To: [email protected]
Subject: Re: Matching at least $x words out of @words

    my @words = qw( foo bar foobar );
    $re = join '', map { '(?=.*(' . (quotemeta) . '))?' } @words;
    $re = qr/$re/;
    my @matches = grep defined, "foo bar baz" =~ $re;

The capturing parent allow you know which word was matched.

-- 
 Philippe "BooK" Bruhat

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