Path: csiph.com!usenet.pasdenom.info!weretis.net!feeder4.news.weretis.net!news.musoftware.de!wum.musoftware.de!feeder.erje.net!newsfeed.xs4all.nl!newsfeed5.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.073 X-Spam-Evidence: '*H*': 0.85; '*S*': 0.00; 'memory.': 0.05; 'url:github': 0.09; 'cc:addr:python-list': 0.10; 'to:addr:pearwood.info': 0.16; 'to:addr:steve+comp.lang.python': 0.16; "to:name:steven d'aprano": 0.16; 'memory': 0.18; 'cc:2**0': 0.23; 'example': 0.23; 'cc:no real name:2**0': 0.24; 'external': 0.24; 'cc:addr:python.org': 0.25; 'header:In-Reply-To:1': 0.25; 'fit': 0.26; 'have,': 0.27; 'skip:@ 10': 0.27; 'received:209.85.160.46': 0.32; 'right?': 0.33; 'surely': 0.33; 'received:google.com': 0.34; 'received:209.85': 0.35; 'there': 0.35; 'but': 0.36; 'message-id:@gmail.com': 0.36; 'subject: (': 0.36; 'why': 0.37; 'received:209': 0.37; 'data': 0.37; 'subject:: ': 0.38; 'received:10': 0.38; 'subject:-': 0.40; 'header:Received:5': 0.40; 'matter': 0.61; 'header:Message-Id:1': 0.62; 'times': 0.63; 'more': 0.63; 'charset:windows-1252': 0.65; 'subject:Fast': 0.84; 'subject:read': 0.84; 'subject:write': 0.84 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to:x-mailer; bh=PxLQ8YFZuH7QRDYQPzNTyTSj5StRTVR/wP84PjddiGU=; b=CZKfPEn+cNn0KnMdQZdI3jcBmux4nBMP+V6JXk4w4/G/MJAJLjPsUXZC7t0EeL3k5B q3J3UrQMiB5yOyzXy1277eFP0xwM4yBGGMwaQtd7UEZz0V3VV/DZlv00NqMX48Lr8Nhn YMWodzlwAip3jNxZ/7uQ4GDsWCOaWDv2CpJqzCXcUr8qSDP1j02vqwzzqbZAVdQjyh1H vutAtUz/Wodu18fcP3JLJm/KhOTbLk9CGVfiNo0G/oqwwBX1alA/UCMSb9N2Ou9Eu6n5 Ysg0ExZsYh4DzXIOQDFZn+cEqfFJifsL/9c2d0+n3RqOUBxBqRiYIcd9B5hyBp9yk1PI a2ig== Content-Type: text/plain; charset=windows-1252 Mime-Version: 1.0 (Mac OS X Mail 6.0 \(1485\)) Subject: Re: Fast forward-backward (write-read) From: Demian Brecht In-Reply-To: <50871ff6$0$29978$c3e8da3$5496439d@news.astraweb.com> Date: Tue, 23 Oct 2012 15:57:44 -0700 Content-Transfer-Encoding: quoted-printable References: <5086AA35.4000509@it.uu.se> <50871ff6$0$29978$c3e8da3$5496439d@news.astraweb.com> To: Steven D'Aprano X-Mailer: Apple Mail (2.1485) Cc: python-list@python.org X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 20 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1351033070 news.xs4all.nl 6904 [2001:888:2000:d::a6]:58113 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:31968 > This is a classic example of why the old external processing = algorithms=20 > of the 1960s and 70s will never be obsolete. No matter how much memory=20= > you have, there will always be times when you want to process more = data=20 > than you can fit into memory. But surely nobody will *ever* need more than 640k=85 Right? Demian Brecht @demianbrecht http://demianbrecht.github.com