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=-0.3 required=5.0 tests=BAYES_00, REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4 Path: border2.nntp.dca1.giganews.com!nntp.giganews.com!usenet.blueworldhosting.com!feeder01.blueworldhosting.com!aioe.org!.POSTED!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: {Pre,Post}conditions and side effects Date: Sat, 25 Apr 2015 07:51:46 +0200 Organization: cbb software GmbH Message-ID: <11q6t64i0w997$.yeg82nck7yy9.dlg@40tude.net> References: <2430252d-52a1-4609-acef-684864e6ca0c@googlegroups.com> <0a718b39-ebd3-4ab5-912e-f1229679dacc@googlegroups.com> <9ee5e186-5aaa-4d07-9490-0f9fdbb5ca18@googlegroups.com> <87tww5296f.fsf@adaheads.sparre-andersen.dk> Reply-To: mailbox@dmitry-kazakov.de NNTP-Posting-Host: w2sqUGEBZqsVBYNL7Ky3Kg.user.speranza.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Complaints-To: abuse@aioe.org User-Agent: 40tude_Dialog/2.0.15.1 X-Notice: Filtered by postfilter v. 0.8.2 Xref: number.nntp.giganews.com comp.lang.ada:192918 Date: 2015-04-25T07:51:46+02:00 List-Id: On Fri, 24 Apr 2015 18:26:41 -0400, Peter Chapin wrote: > On Fri, 24 Apr 2015, Jacob Sparre Andersen wrote: > >> But when are you putting "essential program logic" in an assertion? > > I think a servicable rule is this: If the program works as required, with > all necessary checks still present, with all assertions removed, then we > can say the assertions contain no essential program logic. Where "as required" is defined in part by the assertions, of course ... -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de