"The Perl Way" 
sub cartesian {
    my @C = map { [ $_ ] } @{ shift @_ };

    foreach (@_) {
        my @A = @$_;

        @C = map { my $n = $_; map { [ $n, @$_ ] } @C } @A;
    }

    return @C;
}

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In reply to Re^3: Cartesian Cross-Products by Anonymous Monk
in thread Cartesian Cross-Products by japhy

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