From -5268420347108869204 X-Google-Thread: f78e5,d50382f3e5ec6b4e X-Google-Thread: 109fba,d50382f3e5ec6b4e X-Google-Attributes: gidf78e5,gid109fba,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news4.google.com!news.glorb.com!news.zanker.org!border2.nntp.ams.giganews.com!border1.nntp.ams.giganews.com!nntp.giganews.com!pe2.news.blueyonder.co.uk!blueyonder!peer-uk.news.demon.net!kibo.news.demon.net!news.demon.co.uk!demon!stump.algebra.com!devnull From: tom_usenet@hotmail.com (Tom Widmer) Newsgroups: comp.std.c++,comp.lang.c++ Subject: Re: The issue of const maps and operator[] Date: Sat, 4 Dec 2004 02:26:30 GMT Organization: [posted via Easynet UK] Lines: 35 Sender: mail2news@demon.net Approved: fjh@cs.mu.oz.au (Fergus Henderson , moderator of comp.std.c++) Message-ID: References: <3171vsF37jfq7U1@individual.net> <41aef8cf$0$66398$14726298@news.sunsite.dk> NNTP-Posting-Host: news.news.demon.net Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Trace: news.demon.co.uk 1102127206 4808 158.152.254.254 (4 Dec 2004 02:26:46 GMT) X-Complaints-To: abuse@demon.net NNTP-Posting-Date: Sat, 4 Dec 2004 02:26:46 +0000 (UTC) X-Robomod: STUMP, ichudov@algebra.com (Igor Chudov) X-Virus-Scanned: by amavisd-new at cs.mu.OZ.AU X-Path: comp-std-cpp-robomod!not-for-mail X-Received: (from fjh@localhost) by mulga.cs.mu.OZ.AU (8.12.10+Sun/8.12.9/Submit) id iB42QUZA026505; Sat, 4 Dec 2004 13:26:30 +1100 (EST) X-Delivered-To: std-c++@ucar.edu X-Authentication-Warning: mulga.cs.mu.OZ.AU: fjh set sender to devnull@stump.algebra.com using -f X-Newsreader: Forte Free Agent 2.0/32.652 X-Newsgroups: comp.std.c++,comp.lang.c++ Xref: g2news1.google.com comp.std.c++:3570 comp.lang.c++:32661 On Fri, 3 Dec 2004 02:54:24 GMT, nesotto@cs.auc.dk ("Thorsten Ottosen") wrote: >"James Dennett" wrote in message >news:YWxrd.191852$hj.44035@fed1read07... > >> In spite of having found several discussions on this topic, I could not >> find mention of whether this issue is going to be addressed when C++ >> gets its next major revision. > >|I find it enormously unlikely that this would be changed in the >|next revision of C++. > >yes true. but we are already looking into adding > >T& map::at( const Key& ); >const T& map::at( const Key& ) const; > >which should throw if nothing is found. I like the symmetry with vector::at. >Alternatively, I guess we could use operator()(). I don't like that, since operator() hasn't been used like that elsewhere and is usually used for functors. Tom --- [ 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 ]