I wish I could claim that I came up with the "build it in reverse" technique myself. I saw it first in a great book published by O'Reilly & Associates, "Mastering Algorithms with Perl". The book discusses (among many other topics) building linked lists, and one method is surprisingly similar to the solution I provided to your problem. Your situation was a little different, but being familiar with the Algorithms book provided me with the basic concept. I highly recommend the book.

You can also learn a great deal about complex datastructures and Perl's references from the following POD's:

Happy hunting...


Dave

In reply to Re^2: Creating Hash of hash of hash dynamically by davido
in thread Creating Hash of hash of hash dynamically by rjc

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