From: Diego Olivier Fernandez Pons <Diego.FERNANDEZ_PONS@etu.upmc.fr>
To: "Marcin 'Qrczak' Kowalczyk" <qrczak@knm.org.pl>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] getting the type of a polymorphic data ?
Date: Thu, 12 Aug 2004 16:26:28 +0200 (DST) [thread overview]
Message-ID: <Pine.A41.4.44.0408121619110.557174-100000@ibm1> (raw)
In-Reply-To: <1092320020.19848.82.camel@qrnik>
Bonjour,
> I'm not sure what do you mean, but there are 2^31 int values, half
> of them negative, which map to 2^30 hashes, all non-negative.
> Hashing an int stripts its sign bit.
Bon... J'avais raté celle là. On peut raisonnablement se contenter
d'entiers positifs pour les variables de décision mais si d'une part
hash ne laisse pas invariant le type entier, d'autre part on ne peut
pas faire la différence entre un véritable entier et une valeur
isomorphe c'est perdu d'avance.
Diego Olivier
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next prev parent reply other threads:[~2004-08-12 14:28 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.A41.4.44.0408121350120.557174-100000@ibm1>
2004-08-12 12:09 ` Diego Olivier Fernandez Pons
2004-08-12 13:38 ` Damien Doligez
2004-08-12 13:57 ` Diego Olivier Fernandez Pons
2004-08-12 14:13 ` Marcin 'Qrczak' Kowalczyk
2004-08-12 14:26 ` Diego Olivier Fernandez Pons [this message]
2004-08-12 18:18 Jean-Baptiste Rouquier
2004-08-13 8:15 ` Diego Olivier Fernandez Pons
2004-08-13 8:59 ` Diego Olivier Fernandez Pons
[not found] <20040812143443.2aba80c1@babasse>
2004-08-12 12:47 ` Diego Olivier Fernandez Pons
-- strict thread matches above, loose matches on Subject: below --
2004-08-06 15:05 Diego Olivier Fernandez Pons
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