One regex to rule them all !
Uses negative look-ahead assertion.
use strict;
use warnings;
search(["bobcat", "boomerang", "beer", "bat"], ["-bo"], ["b"]);
sub search {
my ($data, $negative_criteria, $positive_criteria )= @_;
my $re="^(?!" . join("|", map{ s/^-//;$_ }@$negative_criteria) . ")
+"
. join "|", @$positive_criteria;
$re=qr|$re|;
my @results = grep { m/$re/ } @$data;
for (0..$#results){
print $_+1 . " - $results[$_]\n";
}
return \@results;
}
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