Re: Speed issue?

[Graham Wakefield <lists@...>]

On Mar 25, 2008, at 9:25 PM, Eugen-Andrei Gavriloaie wrote:


> > L2 = lua_newthread(L);
> > lua_pushvalue(L, true);
> Stack status:  elem1 elem2 ..... elemN thread true [top of the stack]
> > lua_settable(L, LUA_REGISTRYINDEX); // pops the thread from the  
> > parent state
> This is translated into:
> t[thread]=true. Is this correct?

Yes.

> > lua_pushthread(L2);
> > lua_pushnil(L2);
> Stack status:  elem1 elem2 ..... elemN thread nil [top of the stack]
> > lua_settable(L2, LUA_REGISTRYINDEX);
> t[thread]=nil. Is this correct? If it is that means that putting  
> nil value into a table removes that pair?

Yes. Setting a value to nil in Lua removes a reference; any value  
with no reference is available for garbage collection.