From: szegedy@t-online.de (Christian Szegedy)
To: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] Hashtbls with physical equality?
Date: Mon, 15 Nov 2004 01:33:09 +0100 [thread overview]
Message-ID: <4197F945.70503@t-online.de> (raw)
In-Reply-To: <16791.56417.334890.765954@katsura.parc.xerox.com>
> Is it possible in OCaml to have a hash table that can insert and retrieve
> values without walking over their structure? I tried to hack something
> together using Obj.magic (working from Hashtbl.ml and the size.ml example
> by Filliatre) but it doesn't work for me and I'm concerned that the garbage
> collector might be making the magic values obsolete.
You are right: copying of values by the garbage collection makes this
approach infeasible.
> I have a hash table
> a of strings and I'd like to avoid traversing their length on every lookup.
> Do I have to explicitly use integers instead?
This is certainly a good idea.
next prev parent reply other threads:[~2004-11-15 0:33 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-14 22:29 Wheeler Ruml
2004-11-15 0:33 ` Christian Szegedy [this message]
[not found] ` <20041115012212.GA6561@artisan.com>
2004-11-15 2:20 ` [Caml-list] " Wheeler Ruml
2004-11-15 10:24 ` Alex Baretta
2004-11-15 16:45 ` Wheeler Ruml
2004-11-15 20:34 ` Marcin 'Qrczak' Kowalczyk
2004-11-15 20:37 ` Brian Hurt
2004-11-15 21:03 ` Wheeler Ruml
2004-11-15 21:30 ` Marcin 'Qrczak' Kowalczyk
2004-11-15 23:42 ` Stefan Monnier
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