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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Idiomatic formatting for empty package
Date: Mon, 9 Oct 2017 16:45:41 -0500
Organization: JSA Research & Innovation
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Date: 2017-10-09T16:45:41-05:00
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"Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org> wrote in message 
news:or9too$93i$1@dont-email.me...
> On 10/07/2017 03:52 AM, Randy Brukardt wrote:
>>
>> 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.
>
> For instance, see package Ada.

John also pointed this out privately. Sorry that I missed it. Still, Ada is 
not a very good example:

(1) Ada was created after the fact to group a bunch of unrelated packages 
together. One hopes that no one thinks that such a practice is a good idea! 
The grouping should be of things that are related (like Ada.Strings and 
Ada.Containers), and aas I noted, typically there are things that are shared 
that make sense in the root package.

(2) For instance, had the IO packages been grouped together (without all of 
the other unrelated stuff), it would make sense for the IO exceptions to be 
declared in that parent package. It wasn't done in Ada as the organization 
of the IO libraries predates child packages. (Argubly, that should have been 
done anyway in Ada 95, but it's not as obvious given the capabiliy needs.)

So, I still don't see much need for empty packages; the existence of one 
poorly designed example doesn't change that.

                          Randy.