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: 103376,3d3f20d31be1c33a X-Google-Attributes: gid103376,public X-Google-Thread: f43e6,2c6139ce13be9980 X-Google-Attributes: gidf43e6,public X-Google-Thread: 1108a1,2c6139ce13be9980 X-Google-Attributes: gid1108a1,public From: doylep@ecf.toronto.edu (Patrick Doyle) Subject: Re: Interface/Implementation (was Re: Design by Contract) Date: 1997/09/13 Message-ID: #1/1 X-Deja-AN: 272183186 Sender: news@ecf.toronto.edu (News Administrator) References: X-Nntp-Posting-Host: skule.ecf Organization: University of Toronto, Engineering Computing Facility Newsgroups: comp.object,comp.software-eng,comp.lang.ada,comp.lang.eiffel Date: 1997-09-13T00:00:00+00:00 List-Id: In article , Jon S Anthony wrote: > >In article doylep@ecf.toronto.edu (Patrick Doyle) writes: > >> Ok. I'll go for that, because my argument all along has been that >> abstract superclasses can do as much as *and more than* Ada specs. >> So let's consider just the export aspects of an abstract class. Is >> there anything that they can't do which Ada specs can do? > >Yes, _of course_ there is. An Ada spec. can bundle and export _many_ >different interfaces. These can be abstract and/or concrete. An abstract class could have some concrete features. Is that similar? >You're earlier remark about not saying anything more on this until >you've read up on the relevant Ada bits seems really apropos... You're right that I should be more experienced with Ada, but I'll have to disappoint you on the "not saying anything more" front. :-) -PD -- -- Patrick Doyle doylep@ecf.utoronto.ca