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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: how to print an array range?
Date: Tue, 26 Jun 2012 17:39:08 -0500
Organization: Jacob Sparre Andersen Research & Innovation
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Date: 2012-06-26T17:39:08-05:00
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"Robert A Duff" <bobduff@shell01.TheWorld.com> wrote in message 
news:wccvcidwyj0.fsf@shell01.TheWorld.com...
> "Nasser M. Abbasi" <nma@12000.org> writes:
>
>> I know I am doing something silly here.
>
> Or maybe the language designers did something silly.
> Why didn't they make the index subtype Positive (or
> maybe Natural) instead of Integer?  Is it important
> to allow negative index values?

Well, it wasn't the language designers; we got those packages almost 
unmodified from a previous standard. And we did talk about changing Matrix 
to have a range of Positive, but I believe there were some examples shown of 
negative indexes making sense. So in the end, we didn't change something 
that others had designed, presumably for a reason.

                                              Randy.