From: Francois Pottier <francois.pottier@inria.fr>
To: caml-list@inria.fr
Subject: Re: [Caml-list] Suggestion for overloaded operators
Date: Mon, 11 Feb 2002 09:36:10 +0100 [thread overview]
Message-ID: <20020211093610.A14866@pauillac.inria.fr> (raw)
In-Reply-To: <006801c1b233$83825ec0$0700a8c0@warp>; from warplayer@free.fr on Sun, Feb 10, 2002 at 02:04:45PM +0100
On Sun, Feb 10, 2002 at 02:04:45PM +0100, Warp wrote:
>
> The compiler will seek for a function named :
> typea_add_typeb : typea -> typeb -> typer
Your proposal is reasonable, but you forget that typea and typeb might be
unknown, and might remain unknown for quite a while. For this reason,
overloading poses a difficult type inference problem. One elegant way to solve
it is embodied by Haskell's type classes:
P. Wadler and S. Blott.
How to make ad-hoc polymorphism less ad-hoc.
ftp://ftp.dcs.gla.ac.uk/pub/glasgow-fp/authors/Philip_Wadler/how-to-make-ad-hoc-poly-less-ad-hoc.dvi
You may also wish to have a look at another interesting paper on the
topic:
Martin Odersky, Philip Wadler, and Martin Wehr.
A second look at overloading.
http://lampwww.epfl.ch/~odersky/papers/fpca95.ps.gz
Cheers,
--
François Pottier
Francois.Pottier@inria.fr
http://pauillac.inria.fr/~fpottier/
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prev parent reply other threads:[~2002-02-11 8:36 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-10 13:04 Warp
2002-02-10 13:35 ` Alain Frisch
2002-02-10 13:46 ` Warp
2002-02-10 13:40 ` Bruno Pagano
2002-02-10 13:51 ` Warp
2002-02-10 17:49 ` Tom
2002-02-11 8:36 ` Francois Pottier [this message]
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