From: Jean-Christophe Filliatre <Jean-Christophe.Filliatre@lri.fr>
To: skaller@users.sourceforge.net
Cc: Richard Jones <rich@annexia.org>, caml-list <caml-list@inria.fr>
Subject: Re: [Caml-list] Should be INSIDE STANDARD-LIB: Hashtbl.keys
Date: Mon, 26 Apr 2004 09:29:58 +0200 [thread overview]
Message-ID: <16524.47734.779189.349854@gargle.gargle.HOWL> (raw)
In-Reply-To: <1082771932.21205.654.camel@pelican.wigram>
skaller writes:
>
> The problem is that the Ocaml hashtbl isn't a conventional
> hash table. It allows multiple bindings which means it
> cannot be treated as a simple container.
It's probably done on purpose. Indeed, it is very convenient to
implement symbol tables --- in an imperative way --- because with this
semantics for Hashtbl.add a new binding really hides any previous one
until the end of its scope where Hashtbl.remove restores the previous
binding.
This has nothing to do with Ocaml; I'm pretty sure you can find C hash
tables implementations with the same feature.
--
Jean-Christophe
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next prev parent reply other threads:[~2004-04-26 7:49 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-21 1:19 Oliver Bandel
2004-04-21 8:39 ` Richard Jones
2004-04-21 9:13 ` Martin Jambon
2004-04-23 12:51 ` Xavier Leroy
2004-04-23 13:05 ` Jean-Baptiste Rouquier
2004-04-23 16:04 ` Xavier Leroy
2004-04-23 18:21 ` Jon Harrop
2004-04-23 21:31 ` Jon Harrop
2004-04-23 21:53 ` John Goerzen
2004-04-26 6:28 ` Florian Hars
2004-04-23 18:29 ` John Goerzen
[not found] ` <20040423190710.GA1506@first.in-berlin.de>
2004-04-23 20:42 ` John Goerzen
2004-04-23 15:03 ` Richard Jones
2004-04-24 1:58 ` skaller
2004-04-24 9:20 ` Nicolas Cannasse
2004-04-24 19:26 ` skaller
2004-04-26 7:29 ` Jean-Christophe Filliatre [this message]
2004-04-23 16:06 ` Brian Hurt
2004-04-23 16:31 ` Martin Jambon
2004-04-23 17:27 ` Christoph Bauer
2004-04-23 18:29 ` John Goerzen
[not found] ` <20040423191010.GB1506@first.in-berlin.de>
2004-04-23 20:41 ` John Goerzen
[not found] ` <20040424080904.GA821@first.in-berlin.de>
2004-04-24 20:59 ` John Goerzen
2004-04-25 8:12 ` Oliver Bandel
2004-04-23 18:28 ` John Goerzen
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