Re: What is 'light' user data?

[Matthias Beyer <mail@...>]

Okay, forget it. I RTFM!

Sorry for these spammy messages!

But another question, related to this stuff: What is the way how to do
it? Should I work with light user data, when writing a lua binding for
my application? I think, the light user data stuff is much faster,
isn't it? And I want it to be as fast as possible... so, should I use
light user data, or not? And if not, how to do it then?

On 23-09-2013 15:44:18, Matthias Beyer wrote:
> Hi Lua ML!
> 
> I'm confused about the terminology: What is 'light' user data? Is is
> something special? If I write a C function which pops an (in C defined
> element) from the stack and creates a copy, should I push the result
> of the copy operation as light user data?
> 
>     Code example:
> 
>     static int config_member_copy(lua_State *L) {
>         struct config_member_t *mem;
>         struct config_member_t *copy;
> 
>         mem = lua_touserdata(L, 1);
>         lua_pop(L, 1);
> 
>         copy = some_magic_copy_function(mem);
> 
>         lua_pushlightuserdata(L, copy);
> 
>         return 1
>     }
> 
> Is this piece of code the correct approach?
> 
> -- 
> Mit freundlichen Grüßen,
> Kind regards,
> Matthias Beyer
> 
> Proudly sent with mutt.
> Happily signed with gnupg.



-- 
Mit freundlichen Grüßen,
Kind regards,
Matthias Beyer

Proudly sent with mutt.
Happily signed with gnupg.

Attachment: pgpiSaHwmNWBc.pgp
Description: PGP signature