We can also define $indexed2Dhash[$x][$y]{$z} which should of as a hash labelled by two dimensional indices |
$hashof2Darray{$x}[$y][$z] should be thought of as a hash whose value is a 2D array |
One can freely use such datastructures/arrays as long as use "full" number of indices |
Issues which require understanding of implementation occur when you need to manipulate structure "as a whole" with less than full number of indices |