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=-1.1 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FROM,HTML_MESSAGE,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 23704 invoked from network); 26 May 2021 00:38:39 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 26 May 2021 00:38:39 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 47AE19B9F3; Wed, 26 May 2021 10:38:38 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id D88439B6B4; Wed, 26 May 2021 10:38:03 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="m1aGV9ye"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 981549B6B4; Wed, 26 May 2021 10:38:00 +1000 (AEST) Received: from mail-lj1-f181.google.com (mail-lj1-f181.google.com [209.85.208.181]) by minnie.tuhs.org (Postfix) with ESMTPS id E6FFD9B654 for ; Wed, 26 May 2021 10:37:58 +1000 (AEST) Received: by mail-lj1-f181.google.com with SMTP id c15so40479152ljr.7 for ; Tue, 25 May 2021 17:37:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=nK/xgQu+8VJAOIwf6bFpBUeexngsrB34L1KXrmM7ZoU=; b=m1aGV9yea7ki0xPqPlyQM7Sa3e5Vw2RzuqKpoRQPZAqK0badt7Cy5ABwmgKuRmwVhP dM63IbmIqwC7/INSZElVpu7W1xoJruY8FplmFHDO5heX7XlgJnnc5diZ66jp6g5k23XB C/pvRAqPwQhdds88NUrM3ubTzLsACzVHjZBEhmE1Itf0Fr1E/fvJT7OGWCANAUzJI+Zm teAs/E0ly2SqyQE1M86sC+xS7BKXpizSpCJvB8DV8gPZEa/2+/kKYNvIWGAL9/BforAl ECcNWb7dreky0JKxIsyVCmUkDCaBS6enEmMGtFO+DT7amhjorAKGuQFwWnnJJfaEy1Ok YZag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=nK/xgQu+8VJAOIwf6bFpBUeexngsrB34L1KXrmM7ZoU=; b=ehYnY8yn/EJSq4qMWbmu/2ckzyUzIxFHZO65FwLXYzX/1vmDMsmSTNGKPOKseiGJxx HPWmi5aahEyLV8DrIqzY0AQvOImh9uxK9Vr/FuVwZU0DnOZ8pFNVmqKgaSPI4bVmeVYF fz2x1dQgFp67mFDQvH4YaT1ISL80iyNwE0nGl/ThppAF6XVX74r6oxtD3u4cDwtXrGj/ luTqpajEcBlGe59U7VI3cDoiyPwLBoN2xe9q/oyurHQNl8gvr8orV/rG5Z92I+4hLC8b F/2ALVW2xnc2wVP2MGf+p6Qx1Fwz9H3veLX7qDjS2MJO3C78fFgHAvvC5a3A97BIK5fk uWkA== X-Gm-Message-State: AOAM530dxs4HaEVobE3J9ctYqjXlNPhXeW0YnJ0xn19tfgSUeBaCGSzH x7cl01D7f0b9tXXGi6eleGqgitVTOUhGTgpoQvCyvMQiP2k= X-Google-Smtp-Source: ABdhPJwHFf1gx3NizAtbyz6ysyrBvsxtrM6aG5W98ST/wdYOT2yXOGuMhzZUgrU1wmrUwjCdOor3+h7spd7kWhag/Fs= X-Received: by 2002:a2e:4c19:: with SMTP id z25mr190722lja.47.1621989477149; Tue, 25 May 2021 17:37:57 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Rob Pike Date: Wed, 26 May 2021 10:37:45 +1000 Message-ID: To: "Nelson H. F. Beebe" Content-Type: multipart/alternative; boundary="0000000000009d777505c330daba" 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: The Unix Heritage Society mailing list Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --0000000000009d777505c330daba Content-Type: text/plain; charset="UTF-8" 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/ - > > ------------------------------------------------------------------------------- > --0000000000009d777505c330daba Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
And today, we understand parsing so well we don't need= yacc.=C2=A0

-rob


On Wed, May 26, 20= 21 at 10:20 AM Nelson H. F. Beebe <beebe@math.utah.edu> wrote:
The last article of the latest issue of the Communicat= ions 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

=C2=A0 =C2=A0 =C2=A0 =C2=A0 Last byte: Shaping the foundations of programmi= ng languages
=C2=A0 =C2=A0 =C2=A0 =C2=A0 https://doi.org/10.1145/3460442
=C2=A0 =C2=A0 =C2=A0 =C2=A0 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.=C2=A0 By the time yacc came around= ,
>> you could do it in an afternoon.
>> ...

---------------------------------------------------------------------------= ----
- Nelson H. F. Beebe=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 Tel: +1 801 581 5254=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 -
- University of Utah=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 FAX: +1 801 581 4148=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 -
- Department of Mathematics, 110 LCB=C2=A0 =C2=A0 Internet e-mail: beebe@math.utah.edu= =C2=A0 -
- 155 S 1400 E RM 233=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0beebe@acm.org=C2=A0 beebe@computer.org -
- Salt Lake City, UT 84112-0090, USA=C2=A0 =C2=A0 URL: http://www.ma= th.utah.edu/~beebe/ -
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