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From: Alex Baretta <alex@baretta.com>
To: ocaml <caml-list@inria.fr>
Subject: Re: [Caml-list] Map efficiency?
Date: Tue, 04 Nov 2003 19:14:15 +0100	[thread overview]
Message-ID: <3FA7EC77.50502@baretta.com> (raw)
In-Reply-To: <20031104093905.GF24152@st>

> Map depends on keys to be ordered. This in turn requires to allow for a
> user-defined order: assume sets as keys that are implemented by
> unordered lists. Different lists can represent the same set. Hence, it
> must be possible to provide a user-defined order that would treat those
> lists as equal. The functor argument of Map contains the compare() which
> does just that.

The order function could just as easily be passed as a parameter to all
functions working on the map. There is no reason not to have a
polymorphic version of the Map module in the standard library. Am I
wrong in believing that someone out there wrote such a module already?

Alex


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  reply	other threads:[~2003-11-04 18:14 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-11-04  7:59 Dustin Sallings
2003-11-04  9:11 ` Jean-Christophe Filliatre
2003-11-04 10:00   ` Richard Jones
2003-11-04 19:58   ` Issac Trotts
2003-11-04  9:39 ` Christian Lindig
2003-11-04 18:14   ` Alex Baretta [this message]
2003-11-05  1:09     ` Nicolas Cannasse
2003-11-07  8:27     ` Jean-Christophe Filliatre
2003-11-07 11:39       ` Why are functors better? (Re: [Caml-list] Map efficiency?) Yaron M. Minsky
2003-11-07 14:02         ` Michael Hicks
2003-11-07 14:08         ` Fernando Alegre
2003-11-07 14:49       ` [Caml-list] Map efficiency? Florian Hars
2003-11-04 19:37   ` Dustin Sallings

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