use strict;
use warnings;
use List::Compare;
my @symbol = (
[ 'a', 'b', 'c' ],
[ 'a', 'b', 'c' ],
[ 'a', 'b', 'c' ],
[ 'c', 'd', 'e' ],
);
my $lCmp = List::Compare->new(@symbol);
my @unique = $lCmp->get_symmetric_difference ();
my @union =$lCmp->get_union ();
print "Unique: @unique\n";
print "Union: @union\n";
Prints:
Unique: d e
Union: a b c d e
Update: completely missed the point!
DWIM is Perl's answer to Gödel
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