Multi-Dimensional Hashes in Perl

Introduction To Hashes

Perl hashes are data types that allow you to associate data to a key. For example, a hash can store article titles with the date of publication as the key:

%hash = (20030227 => 'Multi-dimensional hashes', 20030113 => 'Introduction to mod_perl', 20021201 => 'The CPAN Module' );

This is a one-dimensional hash.