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,f822ae7b0f7433c1 X-Google-Attributes: gid103376,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news2.google.com!news3.google.com!news.germany.com!aioe.org!not-for-mail From: Cesar Rabak Newsgroups: comp.lang.ada Subject: Re: Translating an embedded C algorithm Date: Tue, 16 Jan 2007 18:03:46 -0200 Organization: Aioe.org NNTP Server Message-ID: References: <1168871816.263502.212100@11g2000cwr.googlegroups.com> <45ace573$1_3@news.bluewin.ch> <68qioe.mes.ln@hunter.axlog.fr> <1168963927.396654.169380@s34g2000cwa.googlegroups.com> <11e7vht8gdl0z$.2dypcyr85i3w.dlg@40tude.net> <147rcq0tjavdf.lzroutxxh59k$.dlg@40tude.net> NNTP-Posting-Host: zEJK12x7djBBvRARhduGQA.user.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: abuse@aioe.org In-Reply-To: User-Agent: Thunderbird 1.5.0.8 (X11/20061109) Xref: g2news2.google.com comp.lang.ada:8201 Date: 2007-01-16T18:03:46-02:00 List-Id: Dmitry A. Kazakov escreveu: > On Tue, 16 Jan 2007 16:08:21 -0200, Cesar Rabak wrote: > >> Dmitry A. Kazakov escreveu: >>> There is a good C-style rule for that. Place all constants on the left, >>> i.e. >>> >>> if (1 = a) { // Compile error >>> >>> Another advantage is that constant expressions are usually shorter, so it >>> becomes more readable as well. >>> >> Not always the assigment or comparison is being done against a constant, > > Yes, but it makes 80% of the cases. Interestingly, but I have a feeling > that in Ada programs there is somehow less comparisons like above. Maybe > because of use of enumeration types and case-statements? > I don't have this statistic, but, may I think you're in the ballpark. WRT use of enum types, perhaps. C has case statements as well. I feel the whole issue revolves around some philosophic ideas that programmers in each language learn from day one and then start to reason in that way for a full life. >> so this is an advance, but still does not avoid all mishaps. > > Yes, it does not, but it reduces risk. A further step could be switching to > Ada... > Yes, but this switching is costly and if we just do an 'automated' translation you do not earn any bonuses. . .