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,db88d0444fafe8eb X-Google-Attributes: gid103376,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news4.google.com!border1.nntp.dca.giganews.com!nntp.giganews.com!local01.nntp.dca.giganews.com!nntp.megapath.net!news.megapath.net.POSTED!not-for-mail NNTP-Posting-Date: Fri, 23 Sep 2005 18:00:19 -0500 From: "Randy Brukardt" Newsgroups: comp.lang.ada References: <1125544603.561847.32140@g47g2000cwa.googlegroups.com> <14muavojz308w.1ouv7xin79rqu$.dlg@40tude.net> <87fyspgqrm.fsf@mid.deneb.enyo.de> <75KTe.5$1r.0@dfw-service2.ext.ray.com> Subject: Re: Surprise in array concatenation Date: Fri, 23 Sep 2005 18:04:05 -0500 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 5.50.4952.2800 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4952.2800 Message-ID: NNTP-Posting-Host: 64.32.209.38 X-Trace: sv3-Ex1+wCVl0GhSFc82AJUXV5z8qrqFvrIarcnulZIDwmeIMLr99l0QyoSgcDEtx0l15p5xaDZDtn/Kzjq!ELX1CNaHdp6Tb3CklVs9n2tkUNp8qDvWa+wFRtpUaxPjnIja81buekdv56y3fBIKZRuIM4Zkq5Mw!0zGMPWOtChfzeA== X-Complaints-To: abuse@megapath.net X-DMCA-Complaints-To: abuse@megapath.net X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.32 Xref: g2news1.google.com comp.lang.ada:5075 Date: 2005-09-23T18:04:05-05:00 List-Id: wrote in message news:qWQTe.2510$6e1.231@newssvr14.news.prodigy.com... > It would be very nice if the Ada language had a capability to include > abstract data types or extensible objects as members of the ordered > set. This would be even more powerful if the enumerated type > were, itself, abstract and extensible. I say nice, but realizing that > such a feature would make it nearly impossible to design this so > the underlying design goals of Ada would be satisfied. I myself would > find the implementation of this design to be extraodinarily difficult. It isn't *that* hard to define something that works (see AI-261). But it's weird compared to the rest of the language. If we had gotten Integer'Class in Ada 95, it would be more worthwhile... Randy.