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,FREEMAIL_FROM autolearn=ham autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,bd5431b81b9708ee X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2003-02-27 00:52:02 PST Path: archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!newsfeed.icl.net!newsfeed.fjserv.net!colt.net!peernews3.colt.net!newsfeed.stueberl.de!newsfeed01.sul.t-online.de!newsmm00.sul.t-online.com!t-online.de!news.t-online.com!not-for-mail From: "Martin Krischik" Newsgroups: comp.lang.ada Subject: Re: Deference question Date: Wed, 26 Feb 2003 20:30:50 +0100 Organization: never organized Message-ID: References: <1d13e1b4.0302260734.7b26fece@posting.google.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 X-Trace: news.t-online.com 1046335755 06 26473 WHrPERdGbKH9R- 030227 08:49:15 X-Complaints-To: abuse@t-online.com X-Sender: 05341395658-0001@t-dialin.net User-Agent: Pan/0.13.0 (The whole remains beautiful) Xref: archiver1.google.com comp.lang.ada:34659 Date: 2003-02-26T20:30:50+01:00 List-Id: On Wed, 26 Feb 2003 07:34:03 +0000, Papandopulo wrote: > Maybe simple question, but I am just starting with Ada. > > I try to read an array from file using streams: > > declare > type X_Value is mod 2**8; > type X_Buffer is array (Positive range <>) of X_Value; > type X_Buffer_Access is access all X_Buffer; > type X_Buffer_Sz is new X_Buffer (1 .. Positive(Q_Bytes)); > type X_Buffer_Sz_Access is access all X_Buffer_Sz; > Buff : X_Buffer_Sz_Access; > begin > Buff := new X_Buffer_Sz; > X_Buffer_Sz'Read (X_Stream, Buff'all); Typo: it is .all but 'Access. Ada does not need as many pointer. So unless there is a good reason against it I would suggest: Buff : X_Buffer_Sz; begin X_Buffer_Sz'Read (X_Stream, Buff); > end; > > But gnat tells me: > attribute designator expected > on the dereference (Buff'all) > > What's wrong ? With regards Martin -- Martin Krischik mailto://Martin@krischik.com http://www.ada.krischik.com