Re: Can I use __gc metamethod directly from Lua?

[joseph stewart <joseph.stewart@...>]

On Nov 25, 2006, at 6:09 PM, Ram Firestone wrote:

> __gc only works for userdata values.

Ah, I was working off the info at:

http://lua-users.org/wiki/MetatableEvents

That stinks. There's a lot of busy-work in C that I'd rather do in  
Lua. Too bad.

Thanks for the correction.

-joe

> > -----Original Message-----
> > From: lua-bounces@bazar2.conectiva.com.br [mailto:lua- 
> > bounces@bazar2.conectiva.com.br] On Behalf Of
> > joseph stewart
> > Sent: Saturday, November 25, 2006 3:05 PM
> > To: Lua list
> > Subject: Can I use __gc metamethod directly from Lua?
> >
> > Hello all,
> >
> > I'm developing a library binding and to minimize the amount of 'C'
> > code I need to write, I want to have Lua handle the __gc metamethod.
> > At first glance, this doesn't appear to do what I want. Here's the
> > essence of what I'm doing:
> >
> > mt = {}
> > mt.__gc = function() print("gc me") end
> > t = {1,2,3}
> > setmetatable(t, mt)
> > t = nil
> > collectgarbage("collect")
> >
> > I would expect to see "gc me" printed after the collectgarbage
> > function call, but I don't.
> >
> > Am I completely on the wrong track? I've used __gc from 'C' code and
> > more or less get what I expect. Is __gc usable from Lua code?
> >
> > Thanks in advance for any help! When the library is done, I'll share
> > it with y'all.
> >
> > -joe