From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 23546 invoked from network); 26 May 2021 05:15:02 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 26 May 2021 05:15:02 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 46ACA9C084; Wed, 26 May 2021 15:14:59 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 454339B6B4; Wed, 26 May 2021 15:14:25 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 17CFB9B6B4; Wed, 26 May 2021 15:14:21 +1000 (AEST) Received: from freefriends.org (freefriends.org [96.88.95.60]) by minnie.tuhs.org (Postfix) with ESMTPS id 9103A9B654 for ; Wed, 26 May 2021 15:14:18 +1000 (AEST) X-Envelope-From: arnold@skeeve.com Received: from freefriends.org (freefriends.org [96.88.95.60]) by freefriends.org (8.14.7/8.14.7) with ESMTP id 14Q5DCEY016941 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 25 May 2021 23:13:13 -0600 Received: (from arnold@localhost) by freefriends.org (8.14.7/8.14.7/Submit) id 14Q5DCBu016940; Tue, 25 May 2021 23:13:12 -0600 From: arnold@skeeve.com Message-Id: <202105260513.14Q5DCBu016940@freefriends.org> X-Authentication-Warning: frenzy.freefriends.org: arnold set sender to arnold@skeeve.com using -f Date: Tue, 25 May 2021 23:13:12 -0600 To: robpike@gmail.com, beebe@math.utah.edu References: In-Reply-To: User-Agent: Heirloom mailx 12.5 7/5/10 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Subject: Re: [TUHS] [tuhs] Dennis Ritchie's couch X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tuhs@minnie.tuhs.org Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" As a quite serious question, what do you use instead? Hand-written recursive descent? Some other form of machine generated parser? Thanks, Arnold Rob Pike wrote: > And today, we understand parsing so well we don't need yacc. > > -rob > > > On Wed, May 26, 2021 at 10:20 AM Nelson H. F. Beebe > wrote: > > > The last article of the latest issue of the Communications of the ACM > > that appeared electronically earlier today is a brief interview with > > this year's ACM Turing Award winners, Al Aho and Jeff Ullman. > > > > The article is > > > > Last byte: Shaping the foundations of programming languages > > https://doi.org/10.1145/3460442 > > Comm. ACM 64(6), 120, 119, June 2021. > > > > and it includes a picture of the two winners sitting on Dennis > > Ritchie's couch. > > > > I liked this snippet from Jeff Ullman, praising fellow list member > > Steve Johnson's landmark program, yacc: > > > > >> ... > > >> At the time of the first Fortran compiler, it took several > > >> person-years to write a parser. By the time yacc came around, > > >> you could do it in an afternoon. > > >> ... > > > > > > ------------------------------------------------------------------------------- > > - Nelson H. F. Beebe Tel: +1 801 581 5254 > > - > > - University of Utah FAX: +1 801 581 4148 > > - > > - Department of Mathematics, 110 LCB Internet e-mail: > > beebe@math.utah.edu - > > - 155 S 1400 E RM 233 beebe@acm.org > > beebe@computer.org - > > - Salt Lake City, UT 84112-0090, USA URL: > > http://www.math.utah.edu/~beebe/ - > > > > ------------------------------------------------------------------------------- > >