From: Phrogz <gavin@...>
Date: 2006-02-12T04:33:25+09:00
Subject: Re: Insights into Ruby from Lua

Yup, that chapter in PIL is exactly what I'm talking about. That
chapter describes ways to use the __index property of a metatable along
with the 'self' syntax sugar to build a OOP-like system. IMO that means
that Lua has OOP to the same degree that C has OOP: you can roll your
own, if you like :)

My OOP system is rather more feature-rich than what they describe in
that chapter, although I didn't go so far as to include multiple
inheritance or mixins. (Not because it's not possible, but simply
because I didn't need them for what I was creating, and because I
wanted my system to be as fast as possible.)

Anyhow, just because it's so damn purty, here's the diagram of the
object model for the Lua OOP system I made:
http://phrogz.net/AnarkSamples/AKClassHierarchy.png

I really hate how confusing the Ruby ASCII object model diagram is.
(Granted, it's about as good as it can be, as pure ASCII.) Perhaps I'll
make one of those for Ruby sometime.