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=-0.3 required=5.0 tests=BAYES_00,HK_RANDOM_FROM, INVALID_MSGID autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 109fba,b87849933931bc93 X-Google-Attributes: gid109fba,public X-Google-Thread: f43e6,b87849933931bc93 X-Google-Attributes: gidf43e6,public X-Google-Thread: fac41,b87849933931bc93 X-Google-Attributes: gidfac41,public X-Google-Thread: 103376,b87849933931bc93 X-Google-Attributes: gid103376,public X-Google-Thread: 1108a1,b87849933931bc93 X-Google-Attributes: gid1108a1,public X-Google-Thread: 114809,b87849933931bc93 X-Google-Attributes: gid114809,public From: Matt McClellan Subject: Re: What is wrong with OO ? Date: 1997/02/11 Message-ID: <330063B8.3D89@fallschurch.esys.com>#1/1 X-Deja-AN: 218031229 references: <5dopri$dei@news4.digex.net> content-type: text/plain; charset=us-ascii organization: Raytheon E-Systems, Falls Church Division mime-version: 1.0 newsgroups: comp.lang.c++,comp.lang.smalltalk,comp.lang.eiffel,comp.lang.ada,comp.object,comp.software-eng x-mailer: Mozilla 2.0 (Win16; I) Date: 1997-02-11T00:00:00+00:00 List-Id: Ell wrote: > > Nick Leaton (nickle@calfp.co.uk) wrote: > : richard@highrise.nl wrote: > : > > : > Virtual functions are also a kind of documentation. When declaring a > : > function virtual, the programmer is more or less saying "go ahead, > : > override this function if you like." > : > > > : The decision to make a function virtual assumes a knowledge of what > : users of your class are going to do. It akin to predicting the future. > : One of the problems with C++ is this very point. Should you, as a > : designer of a class restrict what someone else does with your class? > > How does making inherited classes able to override a parent function > "restrict"ing "what someone else does with" that class"? > > Elliott You aren't restricting what someone does with the class, *if* you make it virtual. Not doing so prevents someone from overriding the function in a child class, which is restrictive. Matt -- The above are most certainly my opinions, and not necessarily those of my employeer, Raytheon E-Systems _____ __ | ___|/__| Matt McClellan | Raytheon E-Systems | |____/__| mmcclellan@fallschurch.esys.com | Falls Church Div. | |____/__| Ph: 703.560.5000 x2980 | 7700 Arlington Blvd. |______/ Fax: 703.849.1674 | Falls Church, VA 22046