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 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: a07f3367d7,23c0de5a42cf667e X-Google-Attributes: gida07f3367d7,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,ASCII Path: g2news2.google.com!news3.google.com!proxad.net!feeder1-2.proxad.net!193.252.117.184.MISMATCH!feeder.news.orange.fr!not-for-mail Date: Tue, 11 May 2010 19:35:43 +0200 From: Pascal Obry Organization: Home - http://www.obry.net User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; fr-FR; rv:1.8.1.22) Gecko/20090605 Thunderbird/2.0.0.22 Mnenhy/0.7.5.0 MIME-Version: 1.0 Newsgroups: comp.lang.ada Subject: Re: GNAT packages in Linux distributions References: <87mxw9x7no.fsf@ludovic-brenta.org> <16bz9kvbqa8y9$.155ntpwpwl29d.dlg@40tude.net> <4be97bea$0$2966$ba4acef3@reader.news.orange.fr> <4be98123$0$27617$ba4acef3@reader.news.orange.fr> <4be9814d$0$27617$ba4acef3@reader.news.orange.fr> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Message-ID: <4be99568$0$2950$ba4acef3@reader.news.orange.fr> NNTP-Posting-Date: 11 May 2010 19:35:36 CEST NNTP-Posting-Host: 86.205.110.64 X-Trace: 1273599336 reader.news.orange.fr 2950 86.205.110.64:10158 X-Complaints-To: abuse@orange.fr Xref: g2news2.google.com comp.lang.ada:11515 Date: 2010-05-11T19:35:36+02:00 List-Id: Le 11/05/2010 19:08, stefan-lucks@see-the.signature a �crit : > I am curious. Would you be willing to share some of your experience and > tell us about the advantages and disadvantages of both approaches? Yannick has answered this question now. I would just add that SPARK is *hard* (very hard) to program but at the end it gives you a proof just by looking at your code. Eiffel in contrast is far more easier to program, but well the constraints (pre/post conditions, invariants) are only checked at runtime. Problems will be found when this part of the code is run. I cannot say I prefer one or the other. I've stopped programming in Eiffel long time ago now. Both are targeting different level of safety and security to me. I can say that my second best/preferred language is Eiffel. It is a clean language, well designed that encourage good programming. Pascal. -- --|------------------------------------------------------ --| Pascal Obry Team-Ada Member --| 45, rue Gabriel Peri - 78114 Magny Les Hameaux FRANCE --|------------------------------------------------------ --| http://www.obry.net - http://v2p.fr.eu.org --| "The best way to travel is by means of imagination" --| --| gpg --keyserver keys.gnupg.net --recv-key F949BD3B