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Nice write-up.  There are a couple of small suggestions I might make.
1) If you are working on a console, many of the languages you mentioned are
either impossible, or very difficult to port.
2) You say: "Lua tracks references and automagically garbage collects
userdata objects".  As I understand it, it does not collect any of the
objects, just the lua variables holding the userdata (pointer).  You have to
tie in to the GC system and clean the objects up yourself.  Unless you are
actually putting the entire object on the Lua stack, which would be rather
painful.  Either that, or I don't understand how GC works at all. 8)  (which
is probably true in either case. )



----- Original Message -----
From: "Michael Cuddy" <>
Subject: Lua presentation at XGDC3.0

( for more information ;-)
> I'd appreciate any (constructive, please ;-) comments about the slides.