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Date: Thu, 14 Mar 2013 10:27:12 +0100
From: Georg Bauhaus <rm.dash-bauhaus@futureapps.de>
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Subject: Re: Is this expected behavior or not
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Date: 2013-03-14T10:27:13+01:00
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On 14.03.13 10:09, Dmitry A. Kazakov wrote:
> And it must be said that
> a declaration like
>
>     type T is range A..B;
>
> is a shortcut for a more explicit declaration of T inheriting interfaces of
> a scalar object, a comparable object, a numeric object, an ordered object,
> a copyiable object etc.

+1

With the proviso that the compatibility obstacle requires restraint,
I'd suggest

    type R is abstract range 0 .. 1;

    type T is abstract new Float;

as a starting point. Is "abstract ..." compatible with previous versions
of the language?