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: a07f3367d7,1be082612b8c5f2e X-Google-Attributes: gida07f3367d7,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,ASCII Path: g2news2.google.com!news1.google.com!npeer01.iad.highwinds-media.com!news.highwinds-media.com!feed-me.highwinds-media.com!nntp.club.cc.cmu.edu!feeder.erje.net!newsfeed.straub-nv.de!proxad.net!feeder1-2.proxad.net!usenet-fr.net!gegeweb.org!aioe.org!not-for-mail From: =?iso-8859-15?Q?Yannick_Duch=EAne_=28Hibou57=29?= Newsgroups: comp.lang.ada Subject: Re: Dynamically tagged expression not allowed. Why? Date: Thu, 03 Jun 2010 04:37:42 +0200 Organization: Ada At Home Message-ID: References: NNTP-Posting-Host: si1wcqmfPAlDmjwCD+0L/g.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/10.53 (Win32) Xref: g2news2.google.com comp.lang.ada:12207 Date: 2010-06-03T04:37:42+02:00 List-Id: Le Sat, 29 May 2010 20:23:36 +0200, Dmitry A. Kazakov = a =E9crit: >> Conn : Class_Type :=3D New_Class_Instance; > > Should Conn be mutable? Otherwise you could use a function instead. > Good note (formally talking). May be the reason was a matter of efficiency ? -- = 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.