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-Thread: 103376,55a8252137b5ef97 X-Google-Attributes: gid103376,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news4.google.com!newshub.sdsu.edu!elnk-nf2-pas!newsfeed.earthlink.net!stamper.news.pas.earthlink.net!newsread1.news.pas.earthlink.net.POSTED!a6202946!not-for-mail From: Jeffrey Carter Organization: jrcarter commercial-at acm [period | full stop] org User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.7.3) Gecko/20040910 X-Accept-Language: en-us, en MIME-Version: 1.0 Newsgroups: comp.lang.ada Subject: Re: Efficiently setting up large quantities of constant data References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Message-ID: Date: Tue, 14 Dec 2004 00:20:57 GMT NNTP-Posting-Host: 63.186.48.195 X-Complaints-To: abuse@earthlink.net X-Trace: newsread1.news.pas.earthlink.net 1102983657 63.186.48.195 (Mon, 13 Dec 2004 16:20:57 PST) NNTP-Posting-Date: Mon, 13 Dec 2004 16:20:57 PST Xref: g2news1.google.com comp.lang.ada:6928 Date: 2004-12-14T00:20:57+00:00 List-Id: Michael Mounteney wrote: > type component is > record > X : character; > end record; > > type component_list is array (positive range <>) of component; > > type component_ref is access all component_list; type Component_Ref is access constant Component_List; > > type structure is > record > part : component_ref; > end record; > > So I will have lots of structures scattered about, which will be > completely constant. I would like to enforce this constancy, but Ada > (as far as I know) does not (unlike C++; that should get some hackles > rising) allow `constant' to be splashed about in type definitions. > This is on GNAT, which does not support pragma read_only. It might raise some hackles if it were true. It sounds, though, as though you can simply write A_Constant : constant Component_List := (...); to declare your constants. -- Jeff Carter "Sir Lancelot saves Sir Gallahad from almost certain temptation." Monty Python & the Holy Grail 69