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=-1.3 required=5.0 tests=BAYES_00,INVALID_MSGID autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: fac41,2c6139ce13be9980 X-Google-Attributes: gidfac41,public X-Google-Thread: f43e6,2c6139ce13be9980 X-Google-Attributes: gidf43e6,public X-Google-Thread: 103376,3d3f20d31be1c33a X-Google-Attributes: gid103376,public X-Google-Thread: 1108a1,2c6139ce13be9980 X-Google-Attributes: gid1108a1,public From: jsa@alexandria.organon.com (Jon S Anthony) Subject: Re: Separation of IF and Imp: process issue? Date: 1997/09/09 Message-ID: #1/1 X-Deja-AN: 271096852 References: <33E9ADE9.4709@flash.net> <5utag9$o6s@newshub.atmnet.net> <5v1gua$fkk@newshub.atmnet.net> <5v2k2n$1cfu$2@flood.weeg.uiowa.edu> <5v4095$h62@newshub.atmnet.net> <34158D84.299F6103@calfp.co.uk> Distribution: world Organization: PSINet Newsgroups: comp.object,comp.software-eng,comp.lang.ada,comp.lang.eiffel Date: 1997-09-09T00:00:00+00:00 List-Id: In article <34158D84.299F6103@calfp.co.uk> Nick Leaton writes: > If you use inheritance, then the specification of a class can be viewed > in different ways. > > 1) As the inherited class, with any additional specification > > 2) As the union of all the classes features, with those of the class it > inherits > from. (Repeat as necessary) > > Now, in either case Eiffel's one file, or with an Ada style, two > file system, you are going to require machine help to produce 2. Which is a kind of 'round about way of indicating that OOP can be a maintenance nightmare if not used very carefully. It basically results in a kind of "structured spaghetti code" (borrowing one of Paul Graham's descriptions of it). /Jon -- Jon Anthony OMI, Belmont, MA 02178, 617.484.3383 "Nightmares - Ha! The way my life's been going lately, Who'd notice?" -- Londo Mollari