Since Perl doesn't have "multidimensional arrays", it's a "what if pigs could fly" question anyway.

When you understand that Perl arrays cannot hold other arrays, but rather references to arrays, the solutions naturally start occurring. But thinking of them as "multidimensional arrays" is akin to Kirk claiming that Kahn was "thinking in two dimensions" during the final battle of Wrath of Kahn. In other words, by not seeing it as it is, you misunderstand the possibilities.

-- Randal L. Schwartz, Perl hacker