From: brogoff <brogoff@speakeasy.net>
To: caml-list <caml-list@inria.fr>
Subject: Re: [Caml-list] cyclic types
Date: Sat, 29 Jan 2005 09:12:59 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.4.58.0501290905300.12148@shell3.speakeasy.net> (raw)
In-Reply-To: <6b8a914205012905427c79cd85@mail.gmail.com>
On Sat, 29 Jan 2005, Remi Vanicat wrote:
> On Sat, 29 Jan 2005 14:15:43 +0200, Radu Grigore <radugrigore@gmail.com> wrote:
> > Why are cyclic types forbidden?
> >
> > I was forced to use the definition:
> > type forest = Forest of forest StringMap.t | Empty
> > where I would have rather used
> > type forest = forest StringMap.t
> > The error is:
> > The type abbreviation tree is cyclic
>
> You can use the -rectypes of the ocaml compiler or toplevel to allow
> cyclic type.
This comes up relatively frequently, and it is known that having -rectypes
as the default is not a good idea. However, wouldn't explicit typing of
this case sidestep the known problems and eliminate the need for a
-rectypes option here?
-- Brian
next prev parent reply other threads:[~2005-01-29 17:13 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-29 12:15 Radu Grigore
2005-01-29 12:34 ` Radu Grigore
2005-01-29 13:42 ` [Caml-list] " Remi Vanicat
2005-01-29 17:12 ` brogoff [this message]
2005-01-29 17:33 ` Radu Grigore
2005-01-29 23:47 ` Damien Doligez
2005-01-30 5:56 ` brogoff
2005-01-30 6:05 ` Radu Grigore
2005-01-30 7:19 ` William Lovas
2005-01-30 10:33 ` Xavier Leroy
2005-01-30 11:44 ` sejourne_kevin
2005-02-01 9:27 ` Christophe Raffalli
2005-01-29 21:02 ` skaller
2005-01-30 6:46 ` brogoff
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