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: begin clause in package bodies Date: Fri, 1 Dec 2017 14:20:53 +0100 Organization: Aioe.org NNTP Server Message-ID: References: <4c77317b-6d12-474f-928d-c713501f647a@googlegroups.com> <7732b88c-5911-4857-a9c8-e5a719043b26@googlegroups.com> NNTP-Posting-Host: MyFhHs417jM9AgzRpXn7yg.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 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 Content-Language: en-US X-Notice: Filtered by postfilter v. 0.8.2 Xref: reader02.eternal-september.org comp.lang.ada:49299 Date: 2017-12-01T14:20:53+01:00 List-Id: On 01/12/2017 14:05, Mehdi Saada wrote: > Ok. But it has to be a limited practice right ? No. It is cleaner and safer than singletons implemented by a controlled object at the library scope. > I read using package with internal states or global variable was bad, Initialization is not a state nor a global variable. Prior to initialization there is no state at all, the thing stateful or not does not yet exist. > Less a problem Using a generic than can be instanced anywhere though. Generics (static polymorphism) are orthogonal to the issue of initialization. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de