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=unavailable autolearn_force=no version=3.4.4
Path: 
 eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!feeder.eternal-september.org!gandalf.srv.welterde.de!news.jacob-sparre.dk!franka.jacob-sparre.dk!pnx.dk!.POSTED.rrsoftware.com!not-for-mail
From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Idiomatic formatting for empty package
Date: Fri, 6 Oct 2017 20:52:30 -0500
Organization: JSA Research & Innovation
Message-ID: <or9c0v$v6l$1@franka.jacob-sparre.dk>
References: <or3k95$532$1@gioia.aioe.org>
 <or6fli$8vo$2@franka.jacob-sparre.dk> <or7fu4$7vh$1@dont-email.me>
Injection-Date: Sat, 7 Oct 2017 01:52:31 -0000 (UTC)
Injection-Info: franka.jacob-sparre.dk;
 posting-host="rrsoftware.com:24.196.82.226";
	logging-data="31957"; mail-complaints-to="news@jacob-sparre.dk"
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.2900.5931
X-RFC2646: Format=Flowed; Response
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.7246
Xref: news.eternal-september.org comp.lang.ada:48378
Date: 2017-10-06T20:52:30-05:00
List-Id: <comp.lang.ada>

"Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org> wrote in message 
news:or7fu4$7vh$1@dont-email.me...
> On 10/06/2017 01:36 AM, Randy Brukardt wrote:
>> Out of curosity, why you do need to write an empty package? I don't think
>> I've encountered one outside of ACATS tests and incomplete examples.
>
> I frequently structure projects as
>
> package Project is
>    pragma Pure;
> end Project;
>
> package Project.Model is ...
> package Project.UI is ...
> procedure Project.Program is ...

Sure, but there always seems to be something that needs to be shared amongst 
all of the parts. So the root package never ends up completely empty. For 
instance, see Ada.Strings or Ada.Containers.

                       Randy.