Interesting C++ way to allocate user data (placement new)

[Pablo Pissanetzky <pablo@...>]

Just wanted to share this idea:

> void * operator new( size_t size , lua_State * L )
> {
>   return lua_newuserdata( L , size );
> }

Then:

> Foo * foo = new ( L ) Foo( constructor arguments );

Of course, you can never:

> delete foo;

And in __gc you have to:

> ( static_cast< Foo * >( lua_touserdata( L , 1 ) ) )->~Foo();

It looks elegant but also dangerous ( in a good way, I think :)

Pablo

P.S. You also have to have a delete operator to deal with exceptions.