Is there more documentation on the stuff in the Obj module?
What I see/know-about is here:

  http://caml.inria.fr/pub/docs/manual-ocaml/libref/Obj.html

I'm very interested in getting (write) access to GC-information on
ocaml values.

Thanks,
Matt

On Mon, Oct 24, 2005 at 05:51:54PM +0900, Keiko Nakata wrote:
> Hello.
> 
> Why I cannot have *any types* in signatures of functor arguments?
> Concretely, the following F is not typable.
> 
> module F(X:sig type t = [`A of _ ] val f : t -> int end) = 
>   struct
>     let f = function `A x as a -> X.f a | `B -> 0
>   end
> 
> The above F could be made typable as in
> 
> module F(X:sig type s type t = [`A of s ] val f : t -> int end) = 
>   struct
>     let f = function `A x as a -> X.f a | `B -> 0
>   end
> 
> However, this change requires me to add the type component s
> to every module to which F are going to be applied.
> This is not very nice...
> 
> Regards,
> Keiko Nakata
> 
> 
> 
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