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Hash of lists in Perl
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More than Simple Lists and Hashes! - Perl module P217
As well as lists and hashes, Perl has the capability of handling collections of data in more complex structures; you're limited only by your ingenuity! A study of these more complex structures is vital if you're to understand how Object Orientation works in Perl, and the subject is equally essential if you're going to be doing serious data munging without using objects.

This topic is presented on public courses Perl Programming, Perl for Larger Projects, Perl bootcamp

Examples from our training material
2tiny   A list of lists - autovivification
deal   A list of lists - dealing a pack of cards
deal2   List of lists - flexible example
hali   Example of a hash of lists
lili   lists of lists - like a multidimensional array
multikey   A Hash of lists - a more complex example
revise   Revision of reference notations in Perl
rn2   Pushing a list v pushing a reference to a list
rq2d   Setting up a hash of lists
rrr   Setting up a list of lists (like a 2D array) from a file
Opentalk forum discussions related to this topic
help with creating 2D array in perl requested
Variable call subroutine
how to create a two dimensional array
Sorting a list of hashes
FILE CONVERSION TO AN ARRAY OF ARRAYS
Array references
Aaaaaaargh I am losing my head
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Two students on a public Perl course in Melksham
Background information
Some modules are available for download as a sample of our material or under an Open Training Notes License for free download from http://www.training-notes.co.uk.
Topics covered in this module
Multidimensional arrays.
Something more complex.
Design matters.
Complete learning
If you are looking for a complete course and not just a information on a single subject, visit our Listing and schedule page.

Well House Consultants specialise in training courses in Python, Perl, PHP, and MySQL. We run Private Courses throughout the UK (and beyond for longer courses), and Public Courses at our training centre in Melksham, Wiltshire, England. It's surprisingly cost effective to come on our public courses - even if you live in a different country or continent to us.

We have a technical library of over 600 books on the subjects on which we teach. These books are available for reference at our training centre. Also available is the Opentalk Forum for discussion of technical questions.



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