From: Francois Pottier <francois.pottier@inria.fr>
To: Andreas Rossberg <rossberg@ps.uni-sb.de>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] Re: Encoding "abstract" signatures
Date: Mon, 6 May 2002 09:27:40 +0200 [thread overview]
Message-ID: <20020506092740.B11517@pauillac.inria.fr> (raw)
In-Reply-To: <3CD107B5.E300E47E@ps.uni-sb.de>; from rossberg@ps.uni-sb.de on Thu, May 02, 2002 at 11:32:37AM +0200
Andreas,
> So you cannot simply `reuse' T's quantifier.
You're right -- it seems difficult to obtain a compositional encoding of
O'Caml's module system. We would need, in the target system, one universal
quantification over a type of record kind to be somehow equivalent to a series
of universal quantifications over types of base kind. I guess that's what you
were saying from the very start, but it took me a while to see the problem.
It would be interesting to devise a type system that has this property. Didier
Rémy noticed the need for such a feature back in 1994 when writing `Dynamic
typing in polymorphic languages' (see section 4.2 of the SRC tech report). I
don't think he has a polished solution, though.
--
François Pottier
Francois.Pottier@inria.fr
http://pauillac.inria.fr/~fpottier/
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next prev parent reply other threads:[~2002-05-06 7:31 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-04-29 13:35 [Caml-list] Polymorphic Variants and Number Parameterized Typ es Krishnaswami, Neel
2002-04-29 14:16 ` [Caml-list] Polymorphic Variants and Number Parameterized Types Andreas Rossberg
2002-04-29 15:28 ` Francois Pottier
2002-04-29 16:48 ` Andreas Rossberg
2002-04-30 7:07 ` Francois Pottier
2002-04-30 10:34 ` [Caml-list] Encoding "abstract" signatures Andreas Rossberg
2002-04-30 15:18 ` [Caml-list] " Francois Pottier
2002-05-01 13:19 ` Andreas Rossberg
2002-05-02 7:47 ` Francois Pottier
2002-05-02 9:32 ` Andreas Rossberg
2002-05-06 7:27 ` Francois Pottier [this message]
2002-05-07 9:14 ` Andreas Rossberg
2002-04-30 10:04 ` [Caml-list] Modules and typing John Max Skaller
2002-04-30 11:51 ` Francois Pottier
2002-04-30 23:24 ` John Max Skaller
2002-05-01 8:08 ` Noel Welsh
2002-05-02 6:52 ` Francois Pottier
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