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!feeder.eternal-september.org!aioe.org!.POSTED!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: Generators/coroutines in future Ada? Date: Tue, 11 Jul 2017 22:18:11 +0200 Organization: Aioe.org NNTP Server Message-ID: References: <1499802752.2481.2.camel@obry.net> NNTP-Posting-Host: MajGvm9MbNtGBKE7r8NgYA.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/52.2.1 Content-Language: en-US X-Notice: Filtered by postfilter v. 0.8.2 Xref: news.eternal-september.org comp.lang.ada:47363 Date: 2017-07-11T22:18:11+02:00 List-Id: On 2017-07-11 21:52, Pascal Obry wrote: > Le mardi 11 juillet 2017 à 18:59 +0200, Dmitry A. Kazakov a écrit : >> There must be no hidden state, almost never. The state must be >> packed into an object which must be an explicit parameter. > > This sounds plain wrong to me. We have ASM and ADT, What has any of them to do with hidden states? > why do you want to > forbid ASM which is a simple and nice design pattern? There is nothing nice in ASM. > I agree with Jean-Pierre, generator is a a package with state in the > body. Ada has been designed with building blocks in mind, for example a > class is a package+tagged-type. No, class is a set of types sharing some common properties. E.g. - a class of tagged types rooted in some parent type - a class of integer types - a class of types declared in the instances of a generic package ... -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de