Re: How can I learn about Object Oriented programming with lua?

[Philipp Janda <siffiejoe@...>]

Am 27.02.2014 13:33 schröbte Wouter Scherphof:
> The below snippet from Luvit might be pretty much all OO you ever really
> need.

This is also my opinion, irrespective of the actual OO snippet given! OO 
programming in different languages consists of a bunch of optional (and 
mostly independent) features. The only required feature (IMHO) is the 
polymorphism/late binding/virtual function thing, which allows old code 
to call new code (in contrast to procedural code where new (user) code 
would always call old (library) code). Pretty much all Lua OO modules 
get this one right by looking up methods in the objects.

For everything else you need to decide which OO features you want (and 
why), and whether the costs in runtime and memory are worth it (a 
statically compiled language can pay some of it at compile time, with 
Lua it's all at runtime).

If you want to reimplement the GoF patterns in Lua you probably need 
most of the OO features that C++ provides. I don't know how reasonable 
that is. But even if you find or write the perfect OO module for 
implementing GoF patterns, you might need a different OO feature set for 
your next project ...

I guess that's why pretty much everyone writes his/her own OO module at 
least once (I've done three so far).

Philipp