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From: "Jean-Christophe Filliâtre" <Jean-Christophe.Filliatre@lri.fr>
To: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] Physical counterpart to Pervasives.compare?
Date: Mon, 24 Aug 2009 09:01:07 +0200	[thread overview]
Message-ID: <4A923AB3.6080206@lri.fr> (raw)
In-Reply-To: <60DA2C46-E67F-44BF-9ECC-625461BF10B5@cea.fr>

Pascal Cuoq a écrit :
>> Elnatan Reisner wrote:
>>> Is there something that can complete this analogy:
>>> (=) is to (==) as Pervasives.compare is to ___?
>>>
> The simple solution is to number at creation the objects that you want to
> physically compare, using an additional field.

You can do that while hash-consing your values, which has many other
benefits than allowing physical comparison, as explained in this paper:

  http://www.lri.fr/~filliatr/ftp/publis/hash-consing2.pdf

Ocaml code for hash-consing can be found on that page:

  http://www.lri.fr/~filliatr/software.en.html

Hope this helps,
-- 
Jean-Christophe


  reply	other threads:[~2009-08-24  7:01 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20090729030710.BB3C6BC5C@yquem.inria.fr>
2009-07-29  7:04 ` Pascal Cuoq
2009-08-24  7:01   ` Jean-Christophe Filliâtre [this message]
     [not found] <20090824100004.6DBBDBBAF@yquem.inria.fr>
2009-08-24 12:30 ` Pascal Cuoq
2009-08-25 18:03   ` Christophe Raffalli
2009-08-26 10:25     ` Damien Doligez
2009-07-29  1:25 Elnatan Reisner
2009-07-29  3:06 ` [Caml-list] " Edgar Friendly
2009-07-29  3:58   ` Edgar Friendly
2009-07-29  6:13 ` Alain Frisch

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