Re: How reliable is lua_topointer() ?

[Gé Weijers <ge@...>]

Lawrie,

One warning: if the C library keeps the pointer for a long time a new 
object can end up at the same location as the old one, and it can get 
really hard to figure out what's going on. A 'ref' value is safer in 
that respect.

Ge'

Lawrie Nichols wrote:
> Hi Patrick
>
> On 12/08/09 02:09, Patrick Donnelly wrote:
> > Light Userdata and Numbers are both considered strong references in
> > any weak table.
> You're absolutely right....I meant it weak-valued table (I should read 
> my posts before hitting the send button...).
>
> > Also, passing a pointer to an integer on the stack is
> > just as simple in my opinion as passing a pointer returned from
> > lua_topointer.
> >    
> Agreed. However, in my case I'll be getting a pointer (to my allocated 
> UD) coming back from a third-party library. If I can use this pointer 
> as the index, then that's going to be easiest for me at this stage.
>
> Thanks for the help,
>
> Lawrie