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From: =?iso-8859-15?Q?Yannick_Duch=EAne_=28Hibou57=29?=
 <yannick_duchene@yahoo.fr>
Newsgroups: comp.lang.ada
Subject: Re: SPARK again : for-loop vs single loop - a strange case
Date: Sat, 29 May 2010 00:52:58 +0200
Organization: Ada At Home
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Date: 2010-05-29T00:52:58+02:00
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Le Fri, 28 May 2010 14:17:50 +0200, <stefan-lucks@see-the.signature> a  =

=E9crit:
> A for-loop terminates always.
>
> A classical loop may run forever. One would prove termination by loop
> variants, but SPARK doesn't support loop variants. (I am sure you know=

> that.)
Right.

> I would consider this a reason to prefer for-loops over classical loop=
s.
As much as possible, which may be not always.

-- =

There is even better than a pragma Assert: a SPARK --# check.
--# check C and WhoKnowWhat and YouKnowWho;
--# assert Ada;
--  i.e. forget about previous premises which leads to conclusion
--  and start with new conclusion as premise.