By Brian McCauley (‎Nobull‎) from
Date: Tuesday, 4 August 2009 16:20
Duration: 20 minutes
Target audience: Everyday Perl

The Data::Iterator::Hierarchical module. What it is why I wrote it and bit about my experiences getting it ready for CPAN.

Data::Iterator::Hierarchical allows nested loops to iterate in the natural way over a sorted rowset as would typically be returned from an SQL database query that is the result of naturally left joining several tables.

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