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 Path: border1.nntp.dca3.giganews.com!backlog3.nntp.dca3.giganews.com!border1.nntp.dca.giganews.com!nntp.giganews.com!goblin2!goblin.stu.neva.ru!aioe.org!.POSTED!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: Suggestion: Allow functions returning abstract types in certain situations Date: Sat, 24 May 2014 21:20:29 +0200 Organization: cbb software GmbH Message-ID: References: <06f66a19-00f1-405f-a517-05d18a021b65@googlegroups.com> <8zl191j3jpi3.12xzqioq4t4hy.dlg@40tude.net> Reply-To: mailbox@dmitry-kazakov.de NNTP-Posting-Host: AuYlnUSfTZrfhAkRjyySpQ.user.speranza.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Complaints-To: abuse@aioe.org User-Agent: 40tude_Dialog/2.0.15.1 X-Notice: Filtered by postfilter v. 0.8.2 X-Original-Bytes: 1577 Xref: number.nntp.dca.giganews.com comp.lang.ada:186605 Date: 2014-05-24T21:20:29+02:00 List-Id: On Sat, 24 May 2014 14:39:12 -0400, Robert A Duff wrote: > "Dmitry A. Kazakov" writes: > >> Morale. Type semantics must be respected. > > ? No instances (abstract) means no instances. When typing gets broken you never know where than may leak out. Ada would be a much safer language if not these attempts to break typing for the sake imaginary advantages, which never pay off. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de