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,XPRIO autolearn=ham autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,a270a1fc28d4f812,start X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2002-06-21 09:38:16 PST Path: archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!kibo.news.demon.net!demon!news2.euro.net!newsfeed.wxs.nl!transit.news.xs4all.nl!195.129.110.18.MISMATCH!bnewspeer00.bru.ops.eu.uu.net!bnewsifeed02.bru.ops.eu.uu.net!lnewspost00.lnd.ops.eu.uu.net!emea.uu.net!not-for-mail From: "David Crocker" Newsgroups: comp.lang.ada Subject: OOD in Ada? Date: Fri, 21 Jun 2002 17:39:07 +0100 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 5.50.4807.1700 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4522.1200 Message-ID: <3d135676$0$8511$cc9e4d1f@news.dial.pipex.com> NNTP-Posting-Host: userig117.dsl.pipex.com X-Trace: 1024677495 news.dial.pipex.com 8511 195.217.54.117 X-Complaints-To: abuse@uk.uu.net Xref: archiver1.google.com comp.lang.ada:26567 Date: 2002-06-21T17:39:07+01:00 List-Id: I know that Ada95 tries to support O-O development, but from my perspective as an OO developer but Ada novice, it appears to me that any attempt to implement a large OO design in Ada will run into the following problems: 1. The infamous "withing" problem (i.e. it is not possible to declare 2 classes A and B, each in its own package, such that A has a method taking a paremeter of type "access B", and B has a method with a parameter of type "access A"); and 2. The lack of a "dot" notation (or anything similar) for calling a member method, making the code hard to read and hard to determine where dynamic binding may be taking place. So: is there anyone on this list who does serious object-oriented development in Ada and would like to comment? -- David Crocker Escher Technologies Ltd. www.eschertech.com