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From: Robert A Duff <bobduff@shell01.TheWorld.com>
Newsgroups: comp.lang.ada
Subject: Re: Half Constrained Array Types and Slices
Date: 02 Mar 2006 16:01:37 -0500
Organization: The World Public Access UNIX, Brookline, MA
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Date: 2006-03-02T16:01:37-05:00
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"Jeffrey R. Carter" <spam@spam.com> writes:

> Dmitry A. Kazakov wrote:
> 
> > subtype Half_Constrained (Length : Natural) is Unconstrained (1, Length);
> 
> Again, you have a subtype with 1 discriminant of a type with 2. Are you
> saying that should be legal?

It is already legal for derived types:

    type U(Lo, Hi: Integer) is
        record
            A: String(Lo..Hi);
        end record;
    type Half(Hi: Integer) is new U(Lo => 1, Hi => Hi);

Not quite the same thing as a subtype...

- Bob