Re: protecting a variable

[Noel Frankinet <nfr@...>]

Alex Queiroz wrote:

> Hallo,
>
> On 3/14/06, Noel Frankinet <nfr@gistek.net> wrote:
>  
>
> > Hello,
> > Is there a way to protect a variable like in tcl ("trace") ?
> > That is, how to call c or lua code whenever a lua variable is accessed
> > (read or write).
> >    
>
>     If the variable is global you can use the __index and __newindex
> metamethods, for each global variable belongs to a table (_G in the
> most common case).
>
> --
> -alex
> http://www.ventonegro.org/
>
>  
Hello Alex,
Thank you for you answer but,
what are __index, __newindex, _G and how do I  access them (from C).
Is there a doc or tutorial somewhere ?

Thank you


--
Noël Frankinet
Gistek Software SA
http://www.gistek.net