Do you mean things like inheritance and extending, interfaces and the like? I know of only one place where this is dealt with to a complete level: Damian Conway's book. A right rivetting read.

I don't wish to detract from Perl's OO capabilities but it's not something I'd learn from another's work.

Look around the monestary for the gotcha's. How AUTOLOAD tangles with inheritance and the like. Perl is a lovely language and too obliging to be implementing strict OO without a lot of additional functions added by the user. Polymorphism and the like that is another bonus of OO is rather lost on Perl as all Perl functions are polymorphic. But that is not to say that OO Perl isn't lovely.

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Brother Frankus.

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