Re: __call and userdata

[Graham Wakefield <lists@...>]

Ah, now I see what I missed.  I wanted the semantics of noise = Noise 
(), but I should then make Noise in Lua be the constructor function,  
not the metatable.

Thanks

On Mar 15, 2007, at 7:03 PM, Rici Lake wrote:

> Graham Wakefield wrote:
> > Hi all,
> > I'm having trouble using __call in a metatable for userdata; is  
> > this supported?
>
> Yes.
>
> > Here's a rough sketch:
> > print(Noise)
> > table.foreach(Noise, print)
> > noise = Noise()
>
> Noise is a metatable. You create a userdata, setmetatable it to the  
> Noise table, and then call the userdata. (No need to expose Noise
> to the Lua environment.)