From: Diego Olivier Fernandez Pons <Diego-Olivier.FERNANDEZ-PONS@cicrp.jussieu.fr>
To: John Max Skaller <skaller@ozemail.com.au>
Cc: caml-list@inria.fr
Subject: Re: Polymorphic recursion 9Was Re: [Caml-list] Doubly-linked list)
Date: Tue, 27 Aug 2002 15:00:30 +0200 (DST) [thread overview]
Message-ID: <Pine.A32.3.95.1020827143732.83860D-100000@ibm1.cicrp.jussieu.fr> (raw)
In-Reply-To: <3D66AFAE.7040607@ozemail.com.au>
John Max Skaller a écrit :
> I'm confused. I think you mean *type inference* is difficult
> if you want polymorphic recursion?
I'am confused too. We do want type inference, do we not ? And
polymorphic recursion makes type inference undecidable.
- Haskell allows full polymorphic recursion but requires providing
explicitly a type signature (in fact, in Haskell you always provide
type annotations even if it is not required)
- Caml now allows a restricted kind of polymorphic recursion but keeps
most of the type inference (there were a few constructions in Caml
which already required type annotations, I don't know yet how
polymorphic methods interfer with type inference, I suppose the Caml
team can answer that question)
Diego Olivier
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next prev parent reply other threads:[~2002-08-27 13:04 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-13 8:00 [Caml-list] Doubly-linked list Oleg
2002-08-13 8:54 ` Markus Mottl
2002-08-13 15:52 ` Oleg
2002-08-13 11:00 ` Diego Olivier Fernandez Pons
2002-08-13 14:30 ` Oleg
2002-08-13 15:11 ` Anton Moscal
2002-08-13 16:12 ` Oleg
2002-08-13 17:16 ` Max Kirillov
2002-08-14 0:49 ` Max Kirillov
2002-08-13 18:23 ` Anton E. Moscal
2002-08-13 16:16 ` Brian Rogoff
2002-08-14 8:13 ` Diego Olivier Fernandez Pons
2002-08-14 15:43 ` Brian Rogoff
2002-08-19 10:38 ` Diego Olivier Fernandez Pons
2002-08-19 15:58 ` Polymorphic recursion 9Was Re: [Caml-list] Doubly-linked list) Brian Rogoff
2002-08-21 8:04 ` Diego Olivier Fernandez Pons
2002-08-21 15:48 ` Brian Rogoff
2002-08-23 8:14 ` Diego Olivier Fernandez Pons
2002-08-23 21:57 ` John Max Skaller
2002-08-27 13:00 ` Diego Olivier Fernandez Pons [this message]
2002-08-28 14:50 ` John Max Skaller
2002-08-28 17:27 ` [Caml-list] FELIX (was: Polymorphic recursion) Oleg
2002-08-19 23:17 ` [Caml-list] Doubly-linked list james woodyatt
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