Object Oriented Perl provides an invaluable guide to virtually every aspect of object-oriented programming in Perl. It shows the basics of solid object design, common mistakes and many tips for navigating the powerful and flexible nuances of using Perl objects. Also covers popular object modules available from CPAN and discusses performance issues and the tradeoff between programming convenience and speed often faced by today's Perl developer. Advanced chapters cover a number of techniques for adding persistence and invoking methods using multiple dispatching. Topics covered: Perl language review, CPAN, Perl objects, 'blessing' and inheritance, polymorphism, Class::Struct and Class::Methodmaker modules, Perl ties and closures, operator overloading, encapsulation, multiple dispatch, Class::Multimethods, coarse-grained and fine-grained object persistence techniques, performance issues.