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: Generators/coroutines in future Ada? Date: Wed, 12 Jul 2017 06:54:59 +0200 Organization: A noiseless patient Spider Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Date: Wed, 12 Jul 2017 04:51:09 -0000 (UTC) Injection-Info: mx02.eternal-september.org; posting-host="8df7d58532813fa67bcb0e2fbdade429"; logging-data="5408"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18koqtC6ZnW/MqEpnfwgd/N" User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 In-Reply-To: Content-Language: fr Cancel-Lock: sha1:rG7pgLv0+IHGAbWL1ArSyeR3mqk= Xref: news.eternal-september.org comp.lang.ada:47367 Date: 2017-07-12T06:54:59+02:00 List-Id: Le 12/07/2017 à 01:19, Victor Porton a écrit : > Dmitry A. Kazakov wrote: >> I don't understand what is wrong with: >> >> type Stateful is limited private; >> function Generate (X : not null access Stateful) return Things; > > The thing "wrong" with this, is that it is sometimes hard to implement > Generate(). In Python this can be done in an easier way by using generators > (Python's "yield" keywords). > Please provide a concrete example, so we can compare solutions! -- 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