From 2766729291846575287 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f78e5,94e9c2bbb0060b48 X-Google-Attributes: gidf78e5,public X-Google-ArrivalTime: 2002-08-15 17:00:05 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!kibo.news.demon.net!news.demon.co.uk!demon!mail2news.demon.co.uk!not-for-mail From: "James Russell Kuyper Jr." Newsgroups: comp.std.c++ Subject: Re: Proposals for small vectors? Date: Thu, 15 Aug 2002 23:59:10 GMT Organization: Not Enough Approved: Fergus Henderson , moderator of comp.std.c++ Message-ID: <3D5B02EF.9635E629@wizard.net> References: <87wurryywb.fsf@grue.ucsd.edu> <3D38FB4F.1020909@animats.com> <877kjnpg3p.fsf@grue.ucsd.edu> <3d4f850b.146537@news.iperbole.bologna.it> <3d538392.2753209@news.iperbole.bologna.it> <3d5a206b.2846421@news.iperbole.bologna.it> X-Trace: mail2news.demon.co.uk 1029455970 mail2news:27289 mail2news mail2news.demon.co.uk X-Complaints-To: abuse@demon.net X-Mail2News-Path: news.demon.net!mulga.cs.mu.oz.au X-Authentication-Warning: mulga.cs.mu.OZ.AU: fjh set sender to devnull@stump.algebra.com using -f X-Robomod: STUMP, ichudov@algebra.com (Igor Chudov) Delivered-To: std-c++@ncar.ucar.edu X-Accept-Language: en, es, de, ru MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-GC-Trace: gv1-DA5//c5+bu9UiJ7eZu2QEdN3TFgheqO7OFnve02YzF+2AruDc0= NNTP-Posting-Date: Wed, 14 Aug 2002 20:24:36 CDT X-DMCA-Notifications: http://www.giganews.com/info/dmca.html X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.1 Lines: 23 Xref: archiver1.google.com comp.std.c++:13259 Natale Fietta wrote: .... > I'm not a language lawyer, probably i am not using the term POD in the > correct way, for me a POD is a class with a memory layout compatible > with a C struct. to obtain this it is necessary (and as far as i know > also sufficient) to have no virtual function, to have all datas in the > same section and to evitate multiple inheritance and virtual bases; is > this incorrect ? Those are all necessary. They're not quite sufficient. Among other things, all of the non-static data members must also have POD types. > My vectors classes often have non trivial constructor, do this make > them non-POD ? Yes. --- [ 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 ]