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: 103376,583275b6950bf4e6
X-Google-Attributes: gid103376,public
X-Google-ArrivalTime: 2003-04-23 09:24:31 PST
Path: 
 archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!newsfeed.icl.net!newsfeed.fjserv.net!newsfeed00.sul.t-online.de!t-online.de!news1.dtag.de!RRZ.Uni-Koeln.DE!uni-duisburg.de!not-for-mail
From: Georg Bauhaus <sb463ba@d2-hrz.uni-duisburg.de>
Newsgroups: comp.lang.ada
Subject: Re: the Ada mandate,
 and why it collapsed and died (was): 64 bit  addressing and OOP
Date: Wed, 23 Apr 2003 16:24:30 +0000 (UTC)
Organization: GMUGHDU
Message-ID: <b86enu$iam$1@a1-hrz.uni-duisburg.de>
References: <mvul4v00ftbai2g6duuh0r38jpii2qvpjl@4ax.com>
   <a3eaa964.0302141953.16f72dfe@posting.google.com>
 <3E4E8F8C.9C096985@adaworks.com>
 <9fa75d42.0302250710.5549baaf@posting.google.com>
 <3E5C7033.BD5DC462@adaworks.com>
 <9fa75d42.0302260618.7506cba7@posting.google.com>
 <3E5CF5C6.84822F57@adaworks.com>
 <a3eaa964.0302261448.6f38de58@posting.google.com>
 <8qkczsAcGcn+Ew83@nildram.co.uk>
 <a3eaa964.0304162216.60978001@posting.google.com>
 <3EA04A1E.CAFC1FEF@adaworks.com>
NNTP-Posting-Host: d2-hrz.uni-duisburg.de
X-Trace: a1-hrz.uni-duisburg.de 1051115070 18774 134.91.1.15 (23 Apr 2003
 16:24:30 GMT)
X-Complaints-To: usenet@news.uni-duisburg.de
NNTP-Posting-Date: Wed, 23 Apr 2003 16:24:30 +0000 (UTC)
User-Agent: tin/1.5.8-20010221 ("Blue Water") (UNIX) (HP-UX/B.11.00
 (9000/831))
Xref: archiver1.google.com comp.lang.ada:36415
Date: 2003-04-23T16:24:30+00:00
List-Id: <comp.lang.ada>

In comp.lang.ada Richard Riehle <richard@adaworks.com> wrote:
:     In fact,  Ada, once some fundamental
: ideas are understood, is not that difficult. 
 
:  The most
: difficult  idea for many programmers to grasp is the set
: of visibility rules in Ada.

Could it be that rules like these are not enough at the
center of introductions to Ada? I remember an exposition
of child packages (somewhere in GNAT documentation?)
pointing readers to their relation to nested packages.
It does so at some length, and I think it was the length,
including examples, that I found so helpful.

-- Georg