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=-1.9 required=5.0 tests=BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!feeder.eternal-september.org!aioe.org!.POSTED!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: Extending a third party tagged type while adding finalization Date: Mon, 4 Dec 2017 22:02:40 +0100 Organization: Aioe.org NNTP Server Message-ID: References: <4db43571-7f86-4e73-8849-c41160927703@googlegroups.com> <6496a10f-c97e-4e42-b295-2478ad464b2f@googlegroups.com> <6106dfe6-c614-4fc1-aace-74bf8d7435e3@googlegroups.com> <24767ee5-cda8-45e4-98d1-7da44757bd40@googlegroups.com> <037e7f02-9149-4648-b7c5-91f67c1c1961@googlegroups.com> NNTP-Posting-Host: sWq1fEaAu/L5fGxxOY76vQ.user.gioia.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: abuse@aioe.org User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 Content-Language: en-US X-Notice: Filtered by postfilter v. 0.8.2 Xref: reader02.eternal-september.org comp.lang.ada:49369 Date: 2017-12-04T22:02:40+01:00 List-Id: On 2017-12-04 21:54, Randy Brukardt wrote: > The sort things that can't afford to be controlled are those that aren't > really ADTs anyway (think coordinates of a windows). What? Window coordinates are a perfect example of ADT. There are lots of quite specific operations defined on coordinates which are beyond normal arithmetic: scaling, rotation, moving, relative to absolute conversions, logical to physical conversions, coordinate systems, scalar and vector products, coordinate translation ... the list is almost infinite. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de