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,c406e0c4a6eb74ed
X-Google-Attributes: gid103376,public
X-Google-Language: ENGLISH,ASCII
Path: 
 g2news1.google.com!news1.google.com!news.glorb.com!newsfeed00.sul.t-online.de!t-online.de!newsfeed.icl.net!newsfeed.fjserv.net!oleane.net!oleane!skymaster!nobody
From: Jean-Pierre Rosen <rosen@adalog.fr>
Newsgroups: comp.lang.ada
Subject: Re: ADA Popularity Discussion Request
Date: Wed, 01 Sep 2004 16:27:01 +0200
Organization: Adalog
Message-ID: <k7m4hc.224.ln@skymaster>
References: <49dc98cf.0408110556.18ae7df@posting.google.com>
   <oZnWc.31328$9Y6.14222@newsread1.news.pas.earthlink.net>
 <e749549b.0408261308.70d9239c@posting.google.com>
 <cgn6sd$snk$2@a1-hrz.uni-duisburg.de>
 <e749549b.0408271022.47abd0e2@posting.google.com>
 <1198227.gWQ0keDDOY@linux1.krischik.com>
 <e749549b.0408302325.50587be2@posting.google.com> <qrg1hc.0l3.ln@skymaster>
 <1093956169.632925@master.nyc.kbcfp.com> <4ic2hc.1q.ln@skymaster>
 <1093983432.462543@master.nyc.kbcfp.com> <3hs3hc.ip8.ln@skymaster>
 <ch4f42$7qk$1@a1-hrz.uni-duisburg.de>
NNTP-Posting-Host: mailhost.axlog.fr
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: quoted-printable
X-Trace: s5.feed.news.oleane.net 1094051098 3046 195.25.228.57 (1 Sep 2004
 15:04:58 GMT)
X-Complaints-To: abuse@oleane.net
NNTP-Posting-Date: Wed, 1 Sep 2004 15:04:58 +0000 (UTC)
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; fr-FR;
 rv:1.7.2) Gecko/20040803
X-Accept-Language: fr-fr, en-us, en
In-Reply-To: <ch4f42$7qk$1@a1-hrz.uni-duisburg.de>
Xref: g2news1.google.com comp.lang.ada:3245
Date: 2004-09-01T16:27:01+02:00
List-Id: <comp.lang.ada>

Georg Bauhaus a =E9crit :

> Jean-Pierre Rosen <rosen@adalog.fr> wrote:
> : Anyway, all objects are global in Java, so you cannot compare with Ad=
a.
>=20
> Uhm, in the following program, how is the object created by
> "self.new Frob()" global?
>=20
> class I {
>=20
>     private class Frob {
> 	boolean foo() { return true; }
>     }
>=20
>     boolean q(Frob f) {	return f.foo(); }
>=20
>     public static void main(String[] args) {
> 	I self =3D new I();
>=20
> 	if (self.q(self.new Frob())) {  // global?
> 	    return;
> 	}
>     }
> }
>=20
It is on the heap, and can reference only other objects on the heap.
There is therefore no issue of accessing non-existent variables.

In Ada, you can declare an access type local to a subprogram. Objects=20
created by allocators for this access type will similarly be accessible=20
only from within the subprogram. They are still global.

--=20
---------------------------------------------------------
            J-P. Rosen (rosen@adalog.fr)
Visit Adalog's web site at http://www.adalog.fr