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=0.2 required=5.0 tests=BAYES_00,INVALID_MSGID, REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 109fba,7f8fc37d854731d6 X-Google-Attributes: gid109fba,public X-Google-Thread: 1108a1,7f8fc37d854731d6 X-Google-Attributes: gid1108a1,public X-Google-Thread: 114809,7f8fc37d854731d6 X-Google-Attributes: gid114809,public X-Google-Thread: 10461e,7f8fc37d854731d6 X-Google-Attributes: gid10461e,public X-Google-Thread: 103376,7f8fc37d854731d6 X-Google-Attributes: gid103376,public From: Jan Steinman Subject: Re: Interesting but sensitive topic to discuss (HELP: - OOP and CASE tools) Date: 1996/11/12 Message-ID: #1/1 X-Deja-AN: 196058242 references: <32813322.41C6@kyebek3.kjist.ac.kr> <55pqr5$136a@grimsel.zurich.ibm.com> <328109CD.6685@concentric.net> <55v177$ufo@grimsel.zurich.ibm.com> <3283BB94.2D82@concentric.net> <32875B03.3729@iconcomp.com> content-type: text/plain; charset=ISO-8859-1 organization: Bytesmiths, the Smalltalk tools team mime-version: 1.0 reply-to: Jan Steinman newsgroups: comp.object,comp.lang.c++,comp.lang.ada,comp.lang.smalltalk,comp.ai Date: 1996-11-12T00:00:00+00:00 List-Id: In article <32875B03.3729@iconcomp.com>, bill@iconcomp.com wrote: > Alan Lovejoy wrote: > > > > I think you've hit the nail on the head. I do distinguish between "design" and "coding". > > > > To me, the "design" of a program is a language-independent abstraction. Implementation > > inheritance is a coding issue.... > > I'd like to hear more about how you think design can be done > independent of language, and what such a "design" would look > like... The biggest disasters I've seen were designed with the philosophy that the implementation vehicle was unimportant. (In fact, the January issue of The Smalltalk Report is rumored to have a column on this very topic... :-) Conversely, the most successful projects I've seen were ones where the designers were well-versed in the implementation language. I think it is necessary for the designer to understand -- if not excel in -- the implementation vehicle. "Real" architects study civil engineering as well as architecture, or else they might design a skyscraper made of wood and paper. > I think it is impossible to progress very far from a domain > model into design without considering target language... Here here! > > * When should delegation be used instead of inheritance? Hmmm... how do you accomplish *that* in a language independent manner? Turn it over to a C++ coder, they might consider multiple inheritance, turn it over to a Smalltalker, they're going to think of general delegation. Programming is still a combination of art, craft, and science. Most methodologies I've encountered try to force programming entirely into the "science" realm. I think that is a mistake. : To foil junk mailers, REPLY won't work. Please paste address in. : Jan Steinman : Bytesmiths : 2002 Parkside Court, West Linn, OR 97068 USA, +1 503 657 7703 : Java: the elegant simplicity of C++ and the blazing speed of Smalltalk.