For anyone who's interested, the next issue of The Perl Review
(http://www.theperlreview.com/) will have an article entitle "Logic
Programming in Perl." This will be a greatly expanded version of my
OSCON talk, the slides of which may be found at
In this article, there will be a basic introduction to Prolog, via
AI::Prolog (http://search.cpan.org/dist/AI-Prolog/). I will also be
discussing its strengths and weaknesses vis a vis Perl and relational
For those interested in the topic, it's also worth looking at Logic
(http://search.cpan.org/dist/Logic/), a rather interesting take on
Logic programming by Luke Palmer. For much better performance, there's
(http://search.cpan.org/dist/Language-Prolog-Yaswi/) by Salvador
Fandiño García. The latter allows you to access SWI-Prolog
(http://www.swi-prolog.org/) from Perl.
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