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=ham autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,fe7b178ffa3708a X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2003-09-28 14:39:53 PST Path: news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!newshosting.com!news-xfer1.atl.newshosting.com!167.206.3.103.MISMATCH!news3.optonline.net!cyclone.rdc-nyc.rr.com!news-server.columbus.rr.com!cyclone2.kc.rr.com!news2.kc.rr.com!twister.socal.rr.com.POSTED!53ab2750!not-for-mail Sender: kst@stalkings Newsgroups: comp.lang.ada Subject: Re: Omission in the Ada Standard References: <657ea3e3.0309260810.4b6682d2@posting.google.com> From: Keith Thompson Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sun, 28 Sep 2003 21:43:49 GMT NNTP-Posting-Host: 24.30.129.187 X-Complaints-To: abuse@rr.com X-Trace: twister.socal.rr.com 1064785429 24.30.129.187 (Sun, 28 Sep 2003 14:43:49 PDT) NNTP-Posting-Date: Sun, 28 Sep 2003 14:43:49 PDT Organization: RoadRunner - West Xref: news1.google.com comp.lang.ada:90 Date: 2003-09-28T21:43:49+00:00 List-Id: "Jeff C," writes: [...] > Note again that no language I know of has the predefined ability to > talk to ports as part of the language definition.. Ada 83 had: package LOW_LEVEL_IO is -- declarations of the possible types for DEVICE and DATA; -- declarations of overloaded procedures for these types: procedure SEND_CONTROL (DEVICE : device_type; DATA : in out data_type); procedure RECEIVE_CONTROL (DEVICE : device_type; DATA : in out data_type); end; I don't know whether anybody actually implemented it, and it was dropped in Ada 95 (it's not just obsolescent, there's no reference to it at all). -- Keith Thompson (The_Other_Keith) kst@cts.com San Diego Supercomputer Center <*> Schroedinger does Shakespeare: "To be *and* not to be"