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: Strange crash on custom iterator Date: Thu, 5 Jul 2018 09:55:11 +0200 Organization: Aioe.org NNTP Server Message-ID: References: <70c11a71-3832-4f57-8127-f3f1c48a052f@googlegroups.com> <62e38ee4-f72f-4ed8-bef1-952040fb7f8d@googlegroups.com> <64d8b4a1-a92c-4b90-b95c-e821749de969@googlegroups.com> <887212304.552080112.848502.laguest-archeia.com@nntp.aioe.org> <87muvan83x.fsf@adaheads.home> <1449870001.552246132.581310.laguest-archeia.com@nntp.aioe.org> NNTP-Posting-Host: MyFhHs417jM9AgzRpXn7yg.user.gioia.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-Complaints-To: abuse@aioe.org User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 X-Notice: Filtered by postfilter v. 0.8.3 Content-Language: en-US Xref: reader02.eternal-september.org comp.lang.ada:53642 Date: 2018-07-05T09:55:11+02:00 List-Id: On 2018-07-04 23:21, G.B. wrote: > On 04.07.18 22:55, Dmitry A. Kazakov wrote: >> On 2018-07-04 22:40, G. B. wrote: >>> Dmitry A. Kazakov wrote: >>>> On 2018-07-04 21:02, G. B. wrote: >>>>> Dmitry A. Kazakov wrote: >>>>> >>>>>> Back to the square >>>>>> one, how to design an UTF-8 string type? >>>>> >>>>> Never. >>>>> >>>>> What is the proper representation of 3? >>>> >>>> What is 3 here? >>> >>> It names a value of some type. >> >> Which type? You name the type, > > Any type whose objects' values include the value 3 > and which does not specify a representation in source, > like Standard.Integer. Any type from a set of types? You mean a class-wide object then. The representation of a class-wide object is (Tag, Value). So, name the specific type and you get the representation. You cannot skip that step. There is no values and representations of without types. >>> I’d not want encoding here. >> >> There is always some. > > Not in source, where design is fixed explicitly. > >>  But I still have no idea what you want to say by that. > > A properly typed procedure object handles the use case of > encoding I/O in a type safe way. The type is not that of > string-with-something composites. It is the type which covers > the use case procedurally. I do not quite understand this either, but it sounds more right than wrong. So? P.S. It would be much easier, if you first stated a proposition and then illustrated it with an example, rather than trowing an example without any hits as to what class of circumstances this example is supposed to represent. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de