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From: Bob Duff <bobduff@theworld.com>
Newsgroups: comp.lang.ada
Subject: Re: If not Ada, what else...
Date: Fri, 10 Jul 2015 13:39:14 -0400
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Date: 2015-07-10T13:39:14-04:00
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David Botton <david@botton.com> writes:

> To be fair, subtype predicates (and any work in the direction of tighter type
> contracts) are a clear step in the direction I was referring to as real Ada
> worthy additions.

Subtype predicates are my favorite feature added in Ada 2012.
I did much of the design work on them.  I'd prefer they be
called "invariants", though -- but that's a different feature.

I did not agree with the split into Static_Predicate and
Dynamic_Predicate.  (And GNAT has Predicate as an implementation
defined feature -- that's what I use in my code.)

- Bob