From: Alain Frisch <frisch@clipper.ens.fr>
To: Francois Pottier <francois.pottier@inria.fr>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] Breaking out of iterative loops
Date: Thu, 2 May 2002 11:50:49 +0200 (MET DST) [thread overview]
Message-ID: <Pine.SOL.4.44.0205021143270.22680-100000@clipper.ens.fr> (raw)
In-Reply-To: <20020502111422.A31527@pauillac.inria.fr>
On Thu, 2 May 2002, Francois Pottier wrote:
> The situation is different in the case of immutable structures. I
> don't know of any situation where immutable, cyclic structures are
> useful.
FWIW, I used an immutable cyclic structure once in an interpreter for a
functional language; here is the code that evaluate a recursive
abstraction:
let rec local' = (f,self)::local
and self = Value.AbstrMatch (al,local',pl) in
self
The closure (self) contains the environment (local') that makes reference
to the closure, hence the recursive definition.
-- Alain
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next prev parent reply other threads:[~2002-05-02 9:50 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-04-30 20:27 Vincent Foley
2002-04-30 21:38 ` Johan Baltié
2002-05-02 0:57 ` John Max Skaller
2002-05-02 2:18 ` John Prevost
2002-05-02 8:33 ` Markus Mottl
2002-05-02 9:14 ` Francois Pottier
2002-05-02 9:50 ` Alain Frisch [this message]
2002-05-02 14:35 ` Alessandro Baretta
2002-05-02 15:40 ` John Max Skaller
2002-05-02 13:15 Krishnaswami, Neel
2002-05-02 13:34 ` Markus Mottl
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