From: Alain Frisch <alain@frisch.fr>
To: Andreas Rossberg <rossberg@mpi-sws.org>,
Brigitte Pientka <bpientka@cs.mcgill.ca>
Cc: OCaML List Mailing <caml-list@inria.fr>
Subject: Re: [Caml-list] recursive records
Date: Fri, 08 Nov 2013 22:56:40 +0100 [thread overview]
Message-ID: <527D5E18.5040501@frisch.fr> (raw)
In-Reply-To: <EF3E99AA-C0A7-41A8-8936-C550F38DC41B@mpi-sws.org>
On 11/8/2013 9:17 PM, Andreas Rossberg wrote:
> An application like the one of delay is not a value.
One possible workaround for allowing such recursive bindings where
references to the bound values are under abstractions which are not
evaluated while tying the knot is to go through lazy values:
let ones =
let rec ones = lazy {hd = 1; tl = delay (fun () -> Lazy.force ones)} in
Lazy.force ones
(Of course, for this specific example, this is a little bit silly.)
-- Alain
next prev parent reply other threads:[~2013-11-08 21:56 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-08 20:10 Brigitte Pientka
2013-11-08 20:17 ` Andreas Rossberg
2013-11-08 21:56 ` Alain Frisch [this message]
2013-11-09 4:02 ` oleg
2013-11-13 8:01 ` Arkady Andrukonis
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