From: "David Allsopp" <dra-news@metastack.com>
To: "'Dawid Toton'" <d0@wp.pl>, <caml-list@yquem.inria.fr>
Subject: RE: [Caml-list] What is a future of ocaml?
Date: Wed, 14 Jan 2009 15:39:35 -0000 [thread overview]
Message-ID: <001801c9765e$4fabc3b0$ef034b10$@com> (raw)
In-Reply-To: <496DEC48.7000906@wp.pl>
Dawid Toton wrote:
> Could anybody explain why it's impossible to have type classes in OCaml?
I don't think it's impossible - but I believe that if you introduce type
classes then you "damage" Hindley-Milner type inference and you can no
longer derive a principal typing for an arbitrary ML expression without
resorting to type annotations. Whether this is a problem or not is a matter
of taste - but it does make the language harder to call "ML" if you lose one
of its central features! That said, there are of course two big features
(objects and polymorphic variants) in OCaml already which do require
annotations.
David
next prev parent reply other threads:[~2009-01-14 15:39 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-14 9:18 Radzevich Belevich
2009-01-14 9:35 ` [Caml-list] " David Allsopp
2009-01-14 9:51 ` Richard Jones
2009-01-14 13:34 ` Sylvain Le Gall
2009-01-14 13:44 ` [Caml-list] " Dawid Toton
2009-01-14 15:37 ` Martin Jambon
2009-01-14 15:39 ` David Allsopp [this message]
2009-01-15 12:13 ` Jacques Garrigue
2009-01-15 12:46 ` Benedikt Grundmann
2009-01-15 22:20 ` Oliver Bandel
2009-01-16 14:56 ` Kuba Ober
2009-01-15 12:51 ` David Allsopp
2009-01-15 21:08 ` Stefan Monnier
2009-01-14 16:07 ` [Caml-list] " Jérémie Dimino
2009-01-14 17:28 ` Dario Teixeira
2009-01-15 17:50 ` Richard Jones
2009-01-15 17:46 ` Richard Jones
2009-01-18 16:34 ` Xavier Leroy
2009-01-18 18:02 ` Richard Jones
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