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: Ada case-statement Date: Wed, 14 Mar 2018 18:49:37 +0100 Organization: Aioe.org NNTP Server Message-ID: References: <365d65ea-5f4b-4b6a-be9b-1bba146394ab@googlegroups.com> NNTP-Posting-Host: 1aPdsouGBkizSj5ZSDumjw.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/52.6.0 Content-Language: en-US X-Notice: Filtered by postfilter v. 0.8.3 Xref: reader02.eternal-september.org comp.lang.ada:50973 Date: 2018-03-14T18:49:37+01:00 List-Id: On 2018-03-14 18:35, Stephen Davies wrote: > I guess that this has probably been considered before, > but it would be nice if Ada allowed sub-cases, with > coverage checking of the appropriate alternatives. > This seems like a simpler change than some other recent > ones (e.g. conditional expressions), and would remove > one problem with not having non-contiguous subtypes. > For example: > > case Calculate_Day is > when Mon .. Fri => > ... > when Weekend : Sat | Sun => > ... > case Weekend is > when Sat => > ... > when Sun => > ... > end case; > end case; > > Ok, I know this isn't going to happen, I just wanted to > put it out there anyway. Great idea, would be useful for variant records and exception handlers too. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de