From -2892753122196202578 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f78e5,ccb40040597f37a7 X-Google-Attributes: gidf78e5,public X-Google-ArrivalTime: 2003-03-04 08:45:35 PST Path: archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!kibo.news.demon.net!mutlu.news.demon.net!demon!mail2news.demon.co.uk!devnull From: nagle@animats.com (John Nagle) Newsgroups: comp.std.c++ Subject: Extending enums (was Re: Forward declaration of enum) Date: Tue, 4 Mar 2003 16:45:34 +0000 (UTC) Organization: Prodigy Internet http://www.prodigy.com Lines: 23 Approved: fjh@cs.mu.oz.au (Fergus Henderson , moderator of comp.std.c++) Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Trace: mail2news.demon.co.uk 1046796334 18099 10.0.0.1 (4 Mar 2003 16:45:34 GMT) X-Complaints-To: abuse@demon.net NNTP-Posting-Date: Tue, 4 Mar 2003 16:45:34 +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 18qFXo-0004hm-00 for mail2news@news.news.demon.net; Tue, 04 Mar 2003 16:45:32 +0000 X-Received: from localhost (localhost [[UNIX: localhost]]) by mulga.cs.mu.OZ.AU id DAA17776; Wed, 5 Mar 2003 03:45:28 +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-User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.2.1) Gecko/20021130 X-Accept-Language: en-us, en X-Newsgroups: comp.std.c++ X-NNTP-Posting-Date: Tue, 04 Mar 2003 02:38:58 EST X-UserInfo1: SCSGW^_D\JUQB\D[NCOF_W\@PJ_^PBQLGPQRZ_MHEQR@ETUCCNSKQFCY@TXDX_WHSVB]ZEJLSNY\^J[CUVSA_QLFC^RQHUPH[P[NRWCCMLSNPOD_ESALHUK@TDFUZHBLJ\XGKL^NXA\EVHSP[D_C^B_^JCX^W]CHBAX]POG@SSAZQ\LE[DCNMUPG_VSC@VJM X-MailScanner: PASSED (v1.2.7 63101 h247d0vm072120 mailbox4.ucsd.edu) X-Spam-Status: No, hits=-6.6 required=5.0 tests=INVALID_MSGID,IN_REP_TO,NOSPAM_INC,REFERENCES, SPAM_PHRASE_00_01,USER_AGENT,USER_AGENT_MOZILLA_UA, X_ACCEPT_LANG version=2.41 Xref: archiver1.google.com comp.std.c++:18157 More usefully, some way to define a new enum type which references another enum type and is guaranteed not to have clashing values would be useful. Something like enum lowcolors { red, green, blue }; .... enum highcolors{ pink=lastof(lowcolors), magenta, cyan }; It's common to see a new set of constants started from the last value of another set in some previously defined file. This breaks when someone adds a new constant in the first file. Probably not worth the trouble, though. John Nagle Animats --- [ 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 ]