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, REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4 X-Google-Thread: 103376,b076e6315fd62dc5 X-Google-NewGroupId: yes X-Google-Attributes: gida07f3367d7,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Received: by 10.204.154.133 with SMTP id o5mr3717639bkw.0.1337798759830; Wed, 23 May 2012 11:45:59 -0700 (PDT) Path: e27ni48113bkw.0!nntp.google.com!news2.google.com!goblin1!goblin2!goblin.stu.neva.ru!aioe.org!.POSTED!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: fyi, very interesting Ada paper OOP vs. Readability Date: Wed, 23 May 2012 20:45:56 +0200 Organization: cbb software GmbH Message-ID: <1mmiy4uwvesby$.1qdujxobno17s.dlg@40tude.net> References: <1ir29foizbqv1.v9uuhpykjl3n.dlg@40tude.net> <1qkmythqujvoa$.h4megbum9r4c$.dlg@40tude.net> Reply-To: mailbox@dmitry-kazakov.de NNTP-Posting-Host: 4RFYTQ6jM/dAKFJoI0fUkg.user.speranza.aioe.org Mime-Version: 1.0 X-Complaints-To: abuse@aioe.org User-Agent: 40tude_Dialog/2.0.15.1 X-Notice: Filtered by postfilter v. 0.8.2 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Date: 2012-05-23T20:45:56+02:00 List-Id: On Wed, 23 May 2012 17:59:15 +0000 (UTC), NatarovVI wrote: > so... between types there is no need for complicated "relations". > inclusion, equivalence. Traditional OO inheritance *is* inclusion. Sometimes it is called "subsumption relation": S<:T. > it's easily formulated by set of extending interfaces to some module. That is extremely difficult. Showing that two types are equivalent is undecidable. > there is no need to formulate complex dependencies, > and no need in OOP inheritance. See above. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de