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,FREEMAIL_FROM
	autolearn=unavailable autolearn_force=no version=3.4.4
X-Received: by 10.66.161.40 with SMTP id xp8mr1925217pab.39.1383771521374;
        Wed, 06 Nov 2013 12:58:41 -0800 (PST)
X-Received: by 10.182.204.42 with SMTP id kv10mr50781obc.33.1383771521294;
 Wed, 06 Nov 2013 12:58:41 -0800 (PST)
Path: 
 eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!news.eternal-september.org!news.eternal-september.org!feeder.eternal-september.org!eu.feeder.erje.net!feeder.erje.net!us.feeder.erje.net!news.linkpendium.com!news.linkpendium.com!news.snarked.org!newsfeed.news.ucla.edu!usenet.stanford.edu!z6no3972188pbz.1!news-out.google.com!9ni14415qaf.0!nntp.google.com!o2no22970931qas.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail
Newsgroups: comp.lang.ada
Date: Wed, 6 Nov 2013 12:58:41 -0800 (PST)
In-Reply-To: <l5ea1h$2u4$1@dont-email.me>
Complaints-To: groups-abuse@google.com
Injection-Info: glegroupsg2000goo.googlegroups.com;
 posting-host=75.161.29.144;
 posting-account=lJ3JNwoAAAAQfH3VV9vttJLkThaxtTfC
NNTP-Posting-Host: 75.161.29.144
References: <19b9cc6b-28a4-45e4-939c-7720ae5666b9@googlegroups.com>
 <8a7f97ef-672e-4930-9502-e1202dd158fd@googlegroups.com>
 <l5ea1h$2u4$1@dont-email.me>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <50b93cb1-3301-4799-b645-4372315b4aab@googlegroups.com>
Subject: Re: Question about asynchronous calls
From: Shark8 <onewingedshark@gmail.com>
Injection-Date: Wed, 06 Nov 2013 20:58:41 +0000
Content-Type: text/plain; charset=ISO-8859-1
Xref: news.eternal-september.org comp.lang.ada:17592
Date: 2013-11-06T12:58:41-08:00
List-Id: <comp.lang.ada>

On Wednesday, November 6, 2013 1:49:52 PM UTC-7, Jeffrey Carter wrote:
> On 11/06/2013 12:54 PM, Shark8 wrote:
> >
> > Ex: Some_Array'Length returns Natural, I don't have to check for -1 whenever I use it.
> 
> 'Length returns universal_integer (see ARM 3.6.2) so this is not an argument for subtypes (though there are many arguments for them). 'Length is defined not to return a negative value, so if it does do so, you have a compiler error.

Ah, you're right. That's what happens when I try shortening/refactoring quickly.
(I should have stuck with the first thing I thought of, a hypothetical 'count' returning natural.)