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From: =?utf-8?Q?Yannick_Duch=C3=AAne_=28Hibou57?=
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 <yannick_duchene@yahoo.fr>
Newsgroups: comp.lang.ada
Subject: 
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Date: Wed, 06 Mar 2013 19:22:36 +0100
Organization: Ada @ Home
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Date: 2013-03-06T19:22:36+01:00
List-Id: <comp.lang.ada>

Because naming and wording matters, especially with Ada :-P , I have thi=
s  =

question.

http://www.ada-auth.org/standards/12rat/html/Rat12-2-5.html
Says:
> These are not really contractual in the sense thatpreconditions,  =

> postconditions and invariants arecontractual but are more akin to  =

> constraints.

What's not contractual with subtype predicates? And so what does  =

=E2=80=9Ccontractual=E2=80=9D means exactly for Ada's definition authors=
?


-- =

=E2=80=9CSyntactic sugar causes cancer of the semi-colons.=E2=80=9D [1]
=E2=80=9CStructured Programming supports the law of the excluded muddle.=
=E2=80=9D [1]
[1]: Epigrams on Programming =E2=80=94 Alan J. =E2=80=94 P. Yale Univers=
ity