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: 103376,382fcf8feeefdd50 X-Google-Thread: f4fd2,9019ec15d661ad71 X-Google-Attributes: gid103376,gidf4fd2,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII Path: g2news2.google.com!news2.google.com!Xl.tags.giganews.com!border1.nntp.dca.giganews.com!nntp.giganews.com!local02.nntp.dca.giganews.com!nntp.telenor.com!news.telenor.com.POSTED!not-for-mail NNTP-Posting-Date: Thu, 24 Jul 2008 04:40:00 -0500 Date: Thu, 24 Jul 2008 11:40:04 +0200 Subject: Re: computer language used to program Mars Lander From: "John Thingstad" Organization: private Content-Type: text/plain; format=flowed; delsp=yes; charset=iso-8859-15 MIME-Version: 1.0 Newsgroups: comp.lang.ada,comp.lang.lisp References: <185ee7f9-9d4f-4f49-8dbe-6b623b8a8223@c58g2000hsc.googlegroups.com> <887fc0a7-0a5a-4d2e-a9ea-eb9e32d6a818@m36g2000hse.googlegroups.com> <807ef880-b2ac-4ac6-877c-21274e8ff4ab@d77g2000hsb.googlegroups.com> <26ec19b4-09fc-405b-a188-57b6ee5ca1a3@k36g2000pri.googlegroups.com> <76fc184b-bd62-4bd3-9ccf-8a6cd872c30b@v39g2000pro.googlegroups.com> Content-Transfer-Encoding: 8bit Message-ID: User-Agent: Opera Mail/9.51 (Win32) X-Antivirus: avast! (VPS 080723-1, 23.07.2008), Outbound message X-Antivirus-Status: Clean X-Usenet-Provider: http://www.giganews.com X-Trace: sv3-NNUA9VYmMhQ2OHjxGCCoQ34u/BTTeyYPNNdDMinInezT6aRZwRauF3LTTGOb/ZGoYY0RESBVK5nObZ8!+jfhGqwmUauhXggX4i15gJF7waPDK+68A6kxIoPdptX/oJJNy/IHj6m+MC7E5W/lpKjNIFIpnzGn!DXg= X-Complaints-To: news-abuse@telenor.net X-DMCA-Complaints-To: news-abuse@telenor.net X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.39 Xref: g2news2.google.com comp.lang.ada:7033 comp.lang.lisp:30620 Date: 2008-07-24T11:40:04+02:00 List-Id: P� Thu, 24 Jul 2008 09:51:55 +0200, skrev jhc0033@gmail.com : > On Jul 24, 12:39 am, "John Thingstad" wrote: > >> Mathematically verify it with ACL2! Way better than silly type checking. >> Check that theprogram does what the spec sais. >> (Which still only proves that it does what you say, not what you men.)) >> > > Typo-prone people probably shouldn't use dynamically-typed languages! > BTW us, static folk, got Coq, which is probably better than ACL2: the > name "ACL2" sounds like they couldn't even get it right in the first > try. Well the first post got tossed away by accident and the second was written in a hurry in aggravation. Anyhow you are wrong. Since variables must be declared before they are used and also assigned a object typo's are get caught at compile time just like in a statically compiled language. -------------- John Thingstad