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!news.eternal-september.org!feeder.eternal-september.org!aioe.org!.POSTED!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: Community Input for the Maintenance and Revision of the Ada Programming Language Date: Mon, 2 Oct 2017 19:39:24 +0200 Organization: Aioe.org NNTP Server Message-ID: References: <325cf1db-bd9e-4f58-a07b-f297960df269@googlegroups.com> <457e2526-d4b6-4999-8521-64f8b6a0810f@googlegroups.com> <2bc7aef0-c3d6-45e1-9a45-e8bdeafcf572@googlegroups.com> NNTP-Posting-Host: MajGvm9MbNtGBKE7r8NgYA.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/52.3.0 X-Notice: Filtered by postfilter v. 0.8.2 Content-Language: en-US Xref: news.eternal-september.org comp.lang.ada:48280 Date: 2017-10-02T19:39:24+02:00 List-Id: On 2017-10-02 19:19, reinert wrote: > "t1 <= t <= t2" is in mathematical contexts often written "t \in > [t1,t2]" where [t1,t2] is thought about as a time interval. It is not a > good idea to have a concept of "time intervals" in Ada? It is a good idea except that Ada does not have means for that. Ranges in Ada are hard-wired non-entities. > This may though not be a large question :-) To hack it is probably not a big issue, and therefore you will get no support for pushing it through. Otherwise, it is a huge problem to get first-class ranges and slices with proper types and operations on them. Therefore you will get no support either. This or that way it won't happen... -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de