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On 12/4/05, Chris Marrin <> wrote:
> I could also store atoms in
> the registry:
>      lua_pushstring(L, "foo");
>      myFoo = luaL_ref(L, LUA_REGISTRYINDEX);
> then I could test like this:
>      lua_rawgeti(L, LUA_REGISTRYINDEX, myFoo);
>      if (lua_isequal(L, -1, -2)) ...
> but this requires looking up the atom in the atom every time.

Well, it does, but since it's a small integer index, that's a
constant-time array lookup. You can do the same thing if it's your
atom table instead of your registry.

The thing is, the string object itself is already the atom. It's a
little trickier to use because Lua holds on to it instead of you, but
it can be used the same way.