From 6825277407576888224 X-Google-Language: ENGLISH,ASCII X-Google-Thread: f78e5,396a971a96f93ef8 X-Google-Attributes: gidf78e5,public X-Google-ArrivalTime: 2003-02-24 14:44:25 PST Path: archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!newsfeed.icl.net!newsfeed.fjserv.net!colt.net!kibo.news.demon.net!mutlu.news.demon.net!demon!mail2news.demon.co.uk!devnull From: cxl@volny.cz ("Mirek Fidler") Newsgroups: comp.std.c++ Subject: Re: random access iterator and copy-constructibility Date: Mon, 24 Feb 2003 22:44:24 +0000 (UTC) Organization: Czech On Line, a. s. Lines: 26 Approved: fjh@cs.mu.oz.au (Fergus Henderson , moderator of comp.std.c++) Message-ID: References: X-Trace: mail2news.demon.co.uk 1046126664 390 10.0.0.1 (24 Feb 2003 22:44:24 GMT) X-Complaints-To: abuse@demon.net NNTP-Posting-Date: Mon, 24 Feb 2003 22:44:24 +0000 (UTC) X-Received: from mulga.cs.mu.oz.au ([128.250.1.22]) by news.demon.co.uk with esmtp (Exim 4.05) id 18nRKh-000067-00 for mail2news@news.news.demon.net; Mon, 24 Feb 2003 22:44:23 +0000 X-Received: from localhost (localhost [[UNIX: localhost]]) by mulga.cs.mu.OZ.AU id JAA04645; Tue, 25 Feb 2003 09:44:19 +1100 (EST) X-Authentication-Warning: mulga.cs.mu.OZ.AU: fjh set sender to devnull@stump.algebra.com using -f X-Path: comp-std-cpp-robomod!not-for-mail X-Robomod: STUMP, ichudov@algebra.com (Igor Chudov) X-Delivered-To: std-c++@ncar.ucar.edu X-Newsgroups: comp.std.c++ X-NNTP-Posting-Date: Mon, 24 Feb 2003 22:14:09 +0000 (UTC) X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Spam-Status: No, hits=-4.5 required=5.0 tests=INVALID_MSGID,NOSPAM_INC,PRIORITY_NO_NAME, QUOTED_EMAIL_TEXT,REFERENCES,SPAM_PHRASE_00_01 version=2.41 Xref: archiver1.google.com comp.std.c++:18058 "Andrew Koenig" p�se v diskusn�m pr�spevku news:yu99vfz9ifm1.fsf@europa.research.att.com... > Mirek> Is there anywhere in standard place that states that type pointed to by > Mirek> random access iterator must have copy-constructor ? > > I can't think of any such requirement offhand. Why do you think it > would be useful? I was studying 'sort' implementation in several STL implementation and it seems that each of them is using copy-constructor at some point (BTW, it is avoidable, but not using copy contructor harms performance). But so far I have not found requirement for copy-constructor - not in iterator requirements, not in general algorithms requirements, not in sort requirements. I think I must have overlooked it... Mirek --- [ comp.std.c++ is moderated. To submit articles, try just posting with ] [ your news-reader. If that fails, use mailto:std-c++@ncar.ucar.edu ] [ --- Please see the FAQ before posting. --- ] [ FAQ: http://www.jamesd.demon.co.uk/csc/faq.html ]