From -1877660116390876275 X-Google-Language: ENGLISH,ASCII X-Google-Thread: f78e5,7458762a2c3b301d X-Google-Attributes: gidf78e5,public X-Google-ArrivalTime: 2001-08-23 15:57:01 PST Path: archiver1.google.com!newsfeed.google.com!newsfeed.stanford.edu!news.tele.dk!small.news.tele.dk!212.74.64.35!colt.net!dispose.news.demon.net!news.demon.co.uk!demon!mail2news.demon.co.uk!not-for-mail From: joerg.barfurth@attglobal.net (Joerg Barfurth) Newsgroups: comp.std.c++ Subject: Re: Are literals const? Date: Thu, 23 Aug 2001 22:55:57 GMT Organization: My beloved Family Approved: Fergus Henderson , moderator of comp.std.c++ Message-ID: <1eylyrg.gd69zat6jhigN%joerg.barfurth@attglobal.net> References: <7dc3b1ea.0108220617.421ee131@posting.google.com> <1eykhdu.1cqeruv1s5f35sN%joerg.barfurth@attglobal.net> <3B84C702.908D52C6@divalsim.it> X-Trace: mail2news.demon.co.uk 998607365 mail2news:22659 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) MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 User-Agent: MacSOUP/D-2.4.6 (unregistered for 408 days) Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by mulga.cs.mu.OZ.AU id IAA06214 Lines: 35 Xref: archiver1.google.com comp.std.c++:7107 Nicola Musatti wrote: > Joerg Barfurth wrote: > [...] > > (Note: rvalues of builtin types are never const.) >=20 > Isn't it rather the reverse? rvalues of builtin types aren't modifiable= ; > moreover, the only way to *directly* modify an rvalue is to call a non > const member function on it. According to 3.10/9 rvalues of non-class types have cv-unqualified types. You might say that the categories of constness and volatileness don't apply to them. IOW within the framework of the C++ type systems the type of an int rvalue is always 'int' which is not const (whereas the type of an rvalue of class type may be cv-qualified. This remains true, even though you can't modify such an rvalue. This fact isn't true because of the type, but because such an rvalue is a value - not an object. Regards, J=F6rg --=20 J=F6rg Barfurth joerg.barfurth@attglobal.net <<<<<<<<<<<<< using std::disclaimer; <<<<<<<<<<<<<<<<<<<<<<<<<<<< Software Developer http://www.OpenOffice.org StarOffice Configuration http://www.sun.com/staroffice --- [ 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.research.att.com/~austern/csc/faq.html ]