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=-0.3 required=5.0 tests=BAYES_00, REPLYTO_WITHOUT_TO_CC autolearn=no 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!news.eternal-september.org!feeder.eternal-september.org!aioe.org!.POSTED!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: Intermixing two tagged types Date: Thu, 14 Aug 2014 14:06:50 +0200 Organization: cbb software GmbH Message-ID: References: Reply-To: mailbox@dmitry-kazakov.de NNTP-Posting-Host: yj8+JIQUMOEawvIM7K49kA.user.speranza.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Complaints-To: abuse@aioe.org User-Agent: 40tude_Dialog/2.0.15.1 X-Notice: Filtered by postfilter v. 0.8.2 Xref: news.eternal-september.org comp.lang.ada:21753 Date: 2014-08-14T14:06:50+02:00 List-Id: On Thu, 14 Aug 2014 14:57:18 +0300, Victor Porton wrote: > Simon Wright wrote: > >> Victor Porton writes: >> >>> So (now in Ada terms, which I am implementing) a function can belong >>> to two tagged types. >> >> Are you sure that it's appropriate to use *tagged* types? And even if if >> is appropriate for raptor_namespace (i.e., you derive new types from >> it), is it so for raptor_namespace_stack? - which clearly is a stack of >> raptor_namespace (or possibly raptor_namespace'Class). > > Tagged types a little decrease efficiency, There is none, except the place used to keep the type tag. Since non-tagged types do not dispatch, whatever dispatch overhead does not apply. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de