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: 103376,99e73f65ea2533b9 X-Google-Attributes: gid103376,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news2.google.com!border1.nntp.dca.giganews.com!border2.nntp.dca.giganews.com!nntp.giganews.com!cyclone1.gnilink.net!gnilink.net!newsfeed2.telusplanet.net!newsfeed.telus.net!edtnps83.POSTED!53ab2750!not-for-mail Sender: blaak@METROID Newsgroups: comp.lang.ada Subject: Re: and then... (a curiosity) References: <18b41828-bda4-4484-8884-ad62ce1c831d@f36g2000hsa.googlegroups.com> <874p53bij6.fsf@willow.rfc1149.net> <94cc1ce3-59d1-41fa-9167-f3b60ddd2835@a1g2000hsb.googlegroups.com> <48bba264$1@news.post.ch> <48bce306$1@news.post.ch> From: Ray Blaak Message-ID: Organization: The Transcend User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.1 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Tue, 02 Sep 2008 16:26:07 GMT NNTP-Posting-Host: 154.20.96.87 X-Trace: edtnps83 1220372767 154.20.96.87 (Tue, 02 Sep 2008 10:26:07 MDT) NNTP-Posting-Date: Tue, 02 Sep 2008 10:26:07 MDT Xref: g2news1.google.com comp.lang.ada:1870 X-Original-Bytes: 2039 Date: 2008-09-02T16:26:07+00:00 List-Id: Martin Krischik writes: > When I was at Polytechnic first language was PL/1, second Pascal and > therefore methodology was different. i.E. Don't rely on the execution > order of boolean expressing. This I also agree with, although I admit being used to the short circuit && forms in the C-like languages. But my point is about having the source code be clearer when both operands are required to be evaluated, especially when this is a possibility: > They are not necessarily both executed with plain old OR and AND either. > Plain old OR and AND leaves all options open to the optimizer: Out of > order execution Common subexpression elimination or dead code elimination. -- Cheers, The Rhythm is around me, The Rhythm has control. Ray Blaak The Rhythm is inside me, rAYblaaK@STRIPCAPStelus.net The Rhythm has my soul.