From: skaller <skaller@users.sourceforge.net>
To: "Robert M. Solovay" <solovay@Math.Berkeley.EDU>
Cc: David Brown <caml-list@davidb.org>,
Jon Harrop <jon@jdh30.plus.com>, caml-list <caml-list@inria.fr>
Subject: Re: [Caml-list] Polymorphism and the "for" loop
Date: 22 Oct 2004 16:19:23 +1000 [thread overview]
Message-ID: <1098425963.7584.9.camel@pelican.wigram> (raw)
In-Reply-To: <Pine.SOL.4.44.0410211921030.29298-100000@blue1>
On Fri, 2004-10-22 at 12:22, Robert M. Solovay wrote:
> How does one define a function f of type int -> void? I looked in the
> OCaml manual and couldn't find any reference to "void". {It is, of course,
> a familiar concept in C.}
That's right. Ocaml has no void type. I consider that a bug.
Briefly, it was possible to define one using polymorphic variants:
type void = []
however that feature was removed. In any case that would
not be enough, since many standard functions would still
return the wrong type.
--
John Skaller, mailto:skaller@users.sf.net
voice: 061-2-9660-0850,
snail: PO BOX 401 Glebe NSW 2037 Australia
Checkout the Felix programming language http://felix.sf.net
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next prev parent reply other threads:[~2004-10-22 6:19 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-21 18:50 Jon Harrop
2004-10-21 19:11 ` David Brown
2004-10-22 1:19 ` skaller
2004-10-22 2:22 ` Robert M. Solovay
2004-10-22 6:19 ` skaller [this message]
2004-10-22 7:38 ` Jon Harrop
2004-10-22 8:06 ` David Brown
2004-10-22 9:39 ` Andreas Rossberg
2004-10-22 8:13 ` William Lovas
2004-10-22 8:17 ` Jon Harrop
2004-10-22 14:02 ` skaller
2004-10-22 14:31 ` David Brown
2004-10-22 17:06 ` Brian Hurt
2004-10-22 4:17 ` William Lovas
2004-10-22 6:42 ` skaller
2004-10-21 19:12 ` Ville-Pertti Keinonen
2004-10-21 19:20 ` Jon Harrop
2004-10-21 19:42 ` Ville-Pertti Keinonen
2004-10-23 11:41 ` Richard Jones
2004-10-23 12:06 ` Matti Jokinen
2004-10-22 14:07 Harrison, John R
2004-10-22 14:45 ` John Carr
2004-10-23 20:58 ` Christophe Raffalli
2004-10-22 14:47 ` Andreas Rossberg
2004-10-22 16:00 Harrison, John R
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