From: Alain Frisch <alain@frisch.fr>
To: "Dr. Thomas Fischbacher" <t.fischbacher@soton.ac.uk>
Cc: dmitry grebeniuk <gds-mlsts@moldavcable.com>,
"caml-list@inria.fr" <caml-list@inria.fr>
Subject: Re: [Caml-list] Memory statistics tool
Date: Thu, 24 Jul 2008 17:14:33 +0200 [thread overview]
Message-ID: <48889C59.8080806@frisch.fr> (raw)
In-Reply-To: <48887A16.1070906@soton.ac.uk>
Dr. Thomas Fischbacher wrote:
> Alain Frisch wrote:
>> As long as the data structure supports the polymorphic hash function, it
>> should work to simply use a regular hash table with the polymorphic hash
>> function and physical equality, as in:
>>
>> module S = Hashtbl.Make(struct
>> type t = Obj.t
>> let hash = Hashtbl.hash
>> let equal = (==)
>> end);;
>
> Why? (I.e. I'm not convinced yet.)
The two functions (hash and equal) are invariant w.r.t. changes of
physical memory location of their arguments.
-- Alain
next prev parent reply other threads:[~2008-07-24 15:14 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-23 10:54 Dr. Thomas Fischbacher
2008-07-23 11:47 ` [Caml-list] " Daniel Bünzli
2008-07-23 12:40 ` Jan Kybic
2008-07-23 12:44 ` dmitry grebeniuk
2008-07-23 13:09 ` Dr. Thomas Fischbacher
2008-07-23 13:16 ` Alain Frisch
2008-07-24 12:48 ` Dr. Thomas Fischbacher
2008-07-24 15:14 ` Alain Frisch [this message]
2008-07-24 15:44 ` Dr. Thomas Fischbacher
2008-07-24 16:12 ` Alain Frisch
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