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From: "Krishnaswami, Neel" <neelk@cswcasa.com>
To: caml-list@inria.fr
Subject: Re: [Caml-list] Polymorphic Variants and Number Parameterized Typ es
Date: Mon, 29 Apr 2002 09:35:51 -0400	[thread overview]
Message-ID: <B1E4D3274D57D411BE8400D0B783FF32A8D72F@exchange1.cswv.com> (raw)

Pascal Cuoq [mailto:pascal.cuoq@inria.fr] wrote:
> Neel Krishnaswami wrote:
> 
> > There's no recursion in the module system because that would break
> > the termination guarantee. If you think of modules as records, and
> > functors as lambda abstractions, you can see that the module system
> > defines a simply-typed lambda calculus. As you've noticed with C++, 
> > adding recursion to it would mean you can write nonterminating module
> > expressions. (All this is wonderfully clearly explained in 
> > the paper, "A modular  module system".)
> 
> I'm not sure about "simply-typed". Did the situation change since
> that of http://caml.inria.fr/archives/199907/msg00027.html ?

Wow! I didn't even know that was possible. I thought that typechecking
record subtyping was decidable...?

--
Neel Krishnaswami
neelk@cswcasa.com
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             reply	other threads:[~2002-04-29 13:36 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-04-29 13:35 Krishnaswami, Neel [this message]
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
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
  -- strict thread matches above, loose matches on Subject: below --
2002-04-29 12:55 [Caml-list] Polymorphic Variants and Number Parameterized Typ es Krishnaswami, Neel
2002-04-29 13:28 ` Pascal Cuoq
2002-04-29 13:33 ` Markus Mottl

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