From: Chung-chieh Shan <ccshan@post.harvard.edu>
To: caml-list@inria.fr
Subject: Re: Void type?
Date: Sun, 29 Jul 2007 02:31:24 -0400 [thread overview]
Message-ID: <sqotn4-cgd.ln1@mantle.rutgers.edu> (raw)
In-Reply-To: <61777.84.165.172.53.1185610925.squirrel@www.ps.uni-sb.de>
rossberg@ps.uni-sb.de wrote in article <61777.84.165.172.53.1185610925.squirrel@www.ps.uni-sb.de> in gmane.comp.lang.caml.inria:
> Chung-chieh Shan wrote:
> > type void = Void of void
> Dont't forget OCaml's let-rec:
> let rec v = Void v
> works like a charm.
Oops! Thanks. I guess contravariance in charm is a curse. (:
What about:
# type void = { v: 'a. 'a };;
type void = { v : 'a. 'a; }
# let rec vv = { v = vv };;
This field value has type 'a which is less general than 'b. 'b
--
Edit this signature at http://www.digitas.harvard.edu/cgi-bin/ken/sig
People are oddly consistent.
next prev parent reply other threads:[~2007-07-29 6:59 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-28 4:14 Stefan Monnier
2007-07-28 4:33 ` [Caml-list] " Erik de Castro Lopo
2007-07-28 4:51 ` Chris King
2007-07-28 18:49 ` Stefan Monnier
2007-07-28 18:53 ` Basile STARYNKEVITCH
2007-07-29 0:48 ` Stefan Monnier
2007-07-28 18:57 ` Arnaud Spiwack
2007-07-28 6:12 ` Daniel de Rauglaudre
2007-07-28 6:15 ` Chung-chieh Shan
2007-07-28 8:22 ` [Caml-list] " rossberg
2007-07-29 6:31 ` Chung-chieh Shan [this message]
2007-07-29 11:05 ` Arnaud Spiwack
2007-07-29 11:16 ` Jon Harrop
2007-07-29 11:36 ` Arnaud Spiwack
2007-07-29 12:43 ` Richard Jones
2007-07-29 12:58 ` Arnaud Spiwack
2007-07-29 17:02 ` Richard Jones
2007-07-29 20:06 ` Arnaud Spiwack
2007-07-29 22:55 ` Brian Hurt
2007-07-30 4:40 ` skaller
2007-07-30 23:13 ` Brian Hurt
2007-07-31 8:52 ` Richard Jones
2007-07-31 13:08 ` Chris King
2007-07-31 15:27 ` Markus Mottl
2007-08-01 11:37 ` Tom
2007-08-01 16:23 ` Markus Mottl
2007-07-30 4:44 ` Geoffrey Alan Washburn
2007-07-30 13:11 ` [Caml-list] " Brian Hurt
2007-07-30 13:32 ` Christopher L Conway
2007-07-30 13:35 ` Geoffrey Alan Washburn
2007-07-30 13:41 ` [Caml-list] " Chris King
2007-07-30 17:43 ` Christophe Raffalli
2007-07-30 17:58 ` Markus Mottl
2007-07-30 14:27 ` Jeff Polakow
2007-07-28 7:58 ` Sébastien Hinderer
2007-07-28 8:13 ` [Caml-list] " Basile STARYNKEVITCH
2007-07-28 12:29 ` Christophe TROESTLER
2007-07-28 13:36 ` Brian Hurt
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