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: 103376,1116ece181be1aea
X-Google-Attributes: gid103376,public
X-Google-ArrivalTime: 2003-10-02 07:06:19 PST
Path: 
 archiver1.google.com!news2.google.com!newsfeed.stanford.edu!headwall.stanford.edu!fu-berlin.de!uni-berlin.de!tar-alcarin.cbb-automation.DE!not-for-mail
From: Dmitry A. Kazakov <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Is the Writing on the Wall for Ada?
Date: Thu, 02 Oct 2003 16:15:15 +0200
Message-ID: <j4convs0ldcf6rono6mtd2s6h3rtdjf7ld@4ax.com>
References: <NGs6b.10770$Pa1.519789@read1.cgocable.net>
 <vhieky4922o.fsf@niu.ifi.uio.no> <ud6dolepw.fsf@nasa.gov>
 <1064527575.648809@master.nyc.kbcfp.com> <3F739C1D.4030907@attbi.com>
 <uoex8i8i9.fsf@earthlink.net> <na5fnvcqjdvjbutt1s7hu9mhqadjk4jemb@4ax.com>
 <3F78E850.8010401@comcast.net> <3F79751F.3000709@noplace.com>
 <0k2jnvc2hh1ovrj6v6qqa5jh8ddotduj79@4ax.com> <3F7AC9C9.6090903@noplace.com>
 <92lnnvsvcat8eig0aj47cl01cn4ttqjhr2@4ax.com> <3F7C1D2B.5000503@noplace.com>
NNTP-Posting-Host: tar-alcarin.cbb-automation.de (212.79.194.111)
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Trace: news.uni-berlin.de 1065103576 10313779 212.79.194.111 (16 [77047])
X-Newsreader: Forte Agent 1.8/32.548
Xref: archiver1.google.com comp.lang.ada:119
Date: 2003-10-02T16:15:15+02:00
List-Id: <comp.lang.ada>

On Thu, 02 Oct 2003 12:42:33 GMT, Marin David Condic
<nobody@noplace.com> wrote:

>I understand. But I think it would be really hard to avoid this without 
>breaking the language. If you tried to do something to make all that 
>stuff subtypes of something so you could have "compatibility" and no 
>proliferation of package specs, my guess would be that you wouldn't be 
>able to pass millions of lines of existing Ada through the new compiler 
>and have it work. You just can't do that to your user base. Better to 
>start a whole new language.

AFAIK, so far no irreparable damage was made. So in my view it is
pretty possible to add for *all* types:

- classes (tags are embedded for tagged types only);
- interface inheritance which includes interfaces of *all* predefined
types such as scalar types, arrays, record types;
- discriminants;

And to do it in a way 99% compatible to the existing standard.

This would allow to drastically reduce the size of the standard
libraries.

---
Regards,
Dmitry Kazakov
www.dmitry-kazakov.de