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!news.eternal-september.org!.POSTED!not-for-mail From: "J-P. Rosen" Newsgroups: comp.lang.ada Subject: Re: Question on bounded / unbounded strings Date: Thu, 22 Sep 2016 11:01:16 +0200 Organization: A noiseless patient Spider Message-ID: References: <11ee98f5-d373-4c72-8562-c310cc76817d@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Date: Thu, 22 Sep 2016 09:01:11 -0000 (UTC) Injection-Info: mx02.eternal-september.org; posting-host="45bffd6a911624777cad79aac3181090"; logging-data="18655"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+05i9GnCSHLhFOSgUgQwbX" User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.3.0 In-Reply-To: Cancel-Lock: sha1:V89r9RzHQPgR8iqOi6anuXkgKH0= Xref: news.eternal-september.org comp.lang.ada:31838 Date: 2016-09-22T11:01:16+02:00 List-Id: Le 22/09/2016 à 09:24, Dmitry A. Kazakov a écrit : > Neither do I, I never ever used bounded strings. They are totally > useless, IMO. No, they are not. A bounded string is perfectly appropriate to represent abstract data that are /implemented/ by a string. Typical example: - you want to represent a first name, a family name, and an address. - You want them to be different types (to make it impossible to mix them), although they are all implemented as strings. - You have an underlying data base that imposes a maximum length for each of these, but the actual length can be anything up to the maximum => Bounded_String is the way to go. -- J-P. Rosen Adalog 2 rue du Docteur Lombard, 92441 Issy-les-Moulineaux CEDEX Tel: +33 1 45 29 21 52, Fax: +33 1 45 29 25 00 http://www.adalog.fr