From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM
	autolearn=ham autolearn_force=no version=3.4.4
X-Google-Thread: 103376,b36bbdc1595d0665
X-Google-NewGroupId: yes
X-Google-Attributes: gida07f3367d7,domainid0,public,usenet
X-Google-Language: ENGLISH,ASCII
Path: 
 g2news1.google.com!news1.google.com!news.glorb.com!feeder.erje.net!de-l.enfer-du-nord.net!feeder1.enfer-du-nord.net!gegeweb.org!aioe.org!not-for-mail
From: =?iso-8859-15?Q?Yannick_Duch=EAne_=28Hibou57=29?=
 <yannick_duchene@yahoo.fr>
Newsgroups: comp.lang.ada
Subject: Re: SPARK code samples
Date: Wed, 11 Aug 2010 18:50:55 +0200
Organization: Ada At Home
Message-ID: <op.vg9825nvxmjfy8@garhos>
References: <1iq8kg021bo4v$.s51i2enx3fzo.dlg@40tude.net>
 <f94bf7f0-14cb-4a8d-94ef-3cdf2665cd5b@s9g2000yqd.googlegroups.com>
 <fa1507ef-77a8-4a28-b271-2293c5115278@j8g2000yqd.googlegroups.com>
 <op.vg98t7h8xmjfy8@garhos>
NNTP-Posting-Host: wRBcePl7nU3x+PaBbkDMVA.user.speranza.aioe.org
Mime-Version: 1.0
Content-Type: text/plain; charset=iso-8859-15; format=flowed; delsp=yes
Content-Transfer-Encoding: Quoted-Printable
X-Complaints-To: abuse@aioe.org
X-Notice: Filtered by postfilter v. 0.8.2
User-Agent: Opera Mail/10.60 (Win32)
Xref: g2news1.google.com comp.lang.ada:13129
Date: 2010-08-11T18:50:55+02:00
List-Id: <comp.lang.ada>

Le Wed, 11 Aug 2010 18:45:33 +0200, Yannick Duch=EAne (Hibou57)  =

<yannick_duchene@yahoo.fr> a =E9crit:
> That precisely matter. If some feature are excluded, this is solely  =

> because they either does not enforce readability (overloading), are no=
t  =

> predictable enough (while this depend on the state of the art)
You may also add some requirements not really expressable in term featur=
es  =

exclusion, and rather in terms of constructions, like the requirement to=
  =

have a single exit point (multiple return statements are not allowed).  =

This kind-of is not a feature matter, this is an execution flow matter. =
 =

This kind of requirements are enforced by the SPARK grammar.


-- =

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.