From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM autolearn=ham autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 109fba,e0a59694a441eb7b X-Google-Thread: 103376,e0a59694a441eb7b X-Google-Thread: fac41,e0a59694a441eb7b X-Google-Thread: 1108a1,e0a59694a441eb7b X-Google-Attributes: gid109fba,gid103376,gidfac41,gid1108a1,public X-Google-ArrivalTime: 2004-04-23 15:08:24 PST Path: archiver1.google.com!postnews1.google.com!not-for-mail From: heilig@iname.com (Brian_Heilig) Newsgroups: comp.lang.c++,comp.lang.ada,comp.lang.eiffel,comp.object Subject: Re: OOP Language for OS Development Date: 23 Apr 2004 15:08:24 -0700 Organization: http://groups.google.com Message-ID: References: <95db0572.0404142153.431fd058@posting.google.com> <566e2bfb.0404181753.2844342f@posting.google.com> <4088D574.2020503@tele2.fr> <1082732696.152155@master.nyc.kbcfp.com> NNTP-Posting-Host: 63.109.236.83 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Trace: posting.google.com 1082758104 5944 127.0.0.1 (23 Apr 2004 22:08:24 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Fri, 23 Apr 2004 22:08:24 +0000 (UTC) Xref: archiver1.google.com comp.lang.c++:31336 comp.lang.ada:7437 comp.lang.eiffel:730 comp.object:11064 Date: 2004-04-23T15:08:24-07:00 List-Id: Hyman Rosen: > Steven Wurster: > > Eiffel supports covariant argument redefinition > > Which is a huge mistake, since it menas that one can > no longer supply a derived class to something which > expects a base class. Either I don't understand your post or you are mistaken. If the derived class conforms to (inherits from) the parameter's type then there is no problem. Brian