From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on yquem.inria.fr X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=AWL autolearn=disabled version=3.1.3 Received: from mail1-relais-roc.national.inria.fr (mail1-relais-roc.national.inria.fr [192.134.164.82]) by yquem.inria.fr (Postfix) with ESMTP id 92CF2BBC1 for ; Wed, 5 Mar 2008 21:04:39 +0100 (CET) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgAAAPyLzkfUnw6GhWdsb2JhbACCNI4+AQEBCAQGBwgTB5p3 X-IronPort-AV: E=Sophos;i="4.25,452,1199660400"; d="scan'208";a="9005271" Received: from pih-relay08.plus.net ([212.159.14.134]) by mail1-smtp-roc.national.inria.fr with ESMTP; 05 Mar 2008 21:04:39 +0100 Received: from [80.229.56.224] (helo=beast.local) by pih-relay08.plus.net with esmtp (Exim) id 1JWzqw-0005i1-8g for caml-list@yquem.inria.fr; Wed, 05 Mar 2008 20:04:38 +0000 From: Jon Harrop Organization: Flying Frog Consultancy Ltd. To: caml-list@yquem.inria.fr Subject: Re: [Caml-list] Canonical Set/Map datastructure? Date: Wed, 5 Mar 2008 20:03:46 +0000 User-Agent: KMail/1.9.7 References: <47CECF23.1020508@exalead.com> <47CED80A.1010504@frisch.fr> In-Reply-To: <47CED80A.1010504@frisch.fr> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200803052003.46517.jon@ffconsultancy.com> X-Plusnet-Relay: 42d3e661276f38c1450347a37a3a50b9 X-Spam: no; 0.00; frisch:01 frog:98 equality:01 equality:01 wrote:01 caml-list:01 strings:01 alain:01 represented:02 canonical:03 structural:04 bits:05 i'm:09 memory:09 guessing:09 On Wednesday 05 March 2008 17:27:38 Alain Frisch wrote: > Patricia trees work fine when the set elements can easily be represented > as strings of bits. > ... > structural equality = physical equality = set equality This is very interesting. What are the disadvantages? I'm guessing: slow value creation for small values and heavy memory consumption. -- Dr Jon D Harrop, Flying Frog Consultancy Ltd. http://www.ffconsultancy.com/products/?e