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: 103376,4cb1f8d1c17d39a8
X-Google-NewGroupId: yes
X-Google-Attributes: gida07f3367d7,domainid0,public,usenet
X-Google-Language: ENGLISH,ASCII-7-bit
Received: by 10.68.30.34 with SMTP id p2mr4522861pbh.4.1320255491254;
        Wed, 02 Nov 2011 10:38:11 -0700 (PDT)
Path: 
 p6ni63396pbn.0!nntp.google.com!news2.google.com!news1.google.com!news.glorb.com!feeder.erje.net!eternal-september.org!feeder.eternal-september.org!.POSTED!not-for-mail
From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Ada 'hello world' for Android; success!
Date: Wed, 02 Nov 2011 17:38:09 +0000
Organization: A noiseless patient Spider
Message-ID: <m262j2pgqm.fsf@pushface.org>
References: <8239efcjuw.fsf@stephe-leake.org>
	<98ca5430-aa52-4e39-b789-70d0dd6adb46@d33g2000prb.googlegroups.com>
	<824nyrq5p6.fsf@stephe-leake.org>
	<4eac1ca1$0$7625$9b4e6d93@newsspool1.arcor-online.net>
	<82mxciogt0.fsf@stephe-leake.org>
	<4s9hvvnvd44l$.pzu8zi1ndkkp.dlg@40tude.net>
	<82ipn2ms5p.fsf@stephe-leake.org>
	<ldib5ai6cc86.1fd7ya7biqreo$.dlg@40tude.net>
Mime-Version: 1.0
Injection-Info: mx04.eternal-september.org;
 posting-host="dFCm8HWntFqmDIilBLqEJQ";
	logging-data="22160"; mail-complaints-to="abuse@eternal-september.org";
	posting-account="U2FsdGVkX1+lRIWv4syTPY7KlP+bdUKiNx+vxMvcaZs="
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (darwin)
Cancel-Lock: sha1:7ZRcniacEzPi61HUcnim5eKY6jo=
	sha1:3gR3Zk0ypkxz9CuvrCwZa6+PUUY=
Xref: news2.google.com comp.lang.ada:14280
Content-Type: text/plain; charset=us-ascii
Date: 2011-11-02T17:38:09+00:00
List-Id: <comp.lang.ada>

"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> writes:

> Or did you mean that it would be impossible to implement a collection
> of class-wide objects without pointers? This is true, but it does not
> imply referential semantics. E.g. the objects still could be copied in
> and out when accessed.

I hadn't considered this before, because when I was designing an
OOA-related framework it was in Ada 95, so there were no indefinite
containers to be considered for instance storage; I ended up storing
Handles, which were access-to-classwide-limited.

The fact that they had to be limited, to maintain object identity, would
have eliminated Ada 2005 (and now 2012) indefinite containers
immediately.