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From: Warner Losh <imp@bsdimp.com>
To: Arnold Robbins <arnold@skeeve.com>
Cc: TUHS main list <tuhs@minnie.tuhs.org>
Subject: Re: [TUHS] The UNIX Command Language (1976)
Date: Tue, 1 Dec 2020 09:24:17 -0700	[thread overview]
Message-ID: <CANCZdfqMtd-CrwUJPVDbc434+hbQEZoYbT-YuTqMmP2Q6yWqwA@mail.gmail.com> (raw)
In-Reply-To: <202012011538.0B1FcLi5023858@freefriends.org>

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On Tue, Dec 1, 2020 at 8:39 AM <arnold@skeeve.com> wrote:

> It was recognized that goto was not necessary if one had proper control
> structures in a language (if/else, while), and that code with no (or
> minimal) gotos was easier to read and understand.
>

This is true for simple flow control. However, when you had to break out of
multiple levels, or continue not the inner loop, but the middle loop, the
use of extra booleans sure made the code less understandable than a 'goto'
a label that stood in for that purpose... This was something that wasn't
well understood by language designers, and even today C and C++ neither
have good flow control beyond the basics. Even though both break and
continue could take an optional count without breaking old code....

Warner

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  reply	other threads:[~2020-12-01 16:24 UTC|newest]

Thread overview: 91+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-30  3:10 Joachim via TUHS
2020-11-30  8:30 ` Thomas Paulsen
2020-11-30 13:36 ` Brantley Coile
2020-11-30 15:12   ` Tom Ivar Helbekkmo via TUHS
2020-11-30 15:52 ` Clem Cole
2020-11-30 16:25   ` Dan Cross
2020-11-30 16:38     ` Warner Losh
2020-11-30 16:41       ` Dan Cross
2020-11-30 16:37   ` Larry McVoy
2020-11-30 16:54     ` Clem Cole
2020-11-30 18:13       ` Theodore Y. Ts'o
2020-11-30 18:25       ` John Cowan
2020-11-30 18:37         ` Clem Cole
2020-11-30 20:11           ` arnold
2020-11-30 21:49             ` Will Senn
2020-12-01  2:55             ` Jon Steinhart
2020-11-30 18:46         ` Nemo Nusquam
2021-02-10 20:48       ` [TUHS] troff was not so widely usable (was: The UNIX Command Language (1976)) Greg A. Woods
2021-02-10 21:44         ` Larry McVoy
2021-02-10 22:05         ` Clem Cole
2021-02-11 21:58           ` Greg A. Woods
2021-02-12  5:22             ` George Michaelson
2021-02-12 22:13             ` Dave Horsfall
2021-02-12 22:18               ` Ron Natalie
2021-02-10 22:36         ` Jon Steinhart
2021-02-10 23:05           ` George Michaelson
2021-02-11  0:27             ` Ron Natalie
2021-02-11  0:36               ` Larry McVoy
2021-02-11  1:53               ` Clem Cole
2021-02-11  1:59                 ` Richard Salz
2021-02-11  2:04                   ` George Michaelson
2021-02-11  2:44                     ` Richard Salz
2021-02-11  3:02                       ` Steve Nickolas
2021-02-11  4:07                         ` Toby Thain
2021-02-11 16:55                       ` Ron Natalie
2021-02-11 20:27                         ` John Cowan
2021-02-11  2:30                 ` [TUHS] troff was not so widely usable Mary Ann Horton
2021-02-11  2:52                   ` Larry McVoy
2021-02-11  6:42                     ` Andrew Hume
2021-02-11  7:12                       ` Rob Pike
2021-02-11 13:06                         ` John Gilmore
2021-02-11 17:34                           ` Jon Forrest
2021-02-11 18:09                             ` John Cowan
2021-02-11 18:43                               ` Rich Morin
2020-12-01  3:59 ` [TUHS] The UNIX Command Language (1976) jason-tuhs
2020-12-01  4:03   ` Jon Steinhart
2020-12-01  9:27   ` Steve Nickolas
2020-12-01 15:09   ` Jim Capp
2020-12-01 15:35     ` Toby Thain
2020-12-01 15:38     ` arnold
2020-12-01 16:24       ` Warner Losh [this message]
2020-12-01 16:39         ` arnold
2020-12-01 20:13           ` Rob Pike
2020-12-02  7:08             ` arnold
2020-12-02  7:29               ` Rob Pike
2020-12-01 20:20           ` Steffen Nurpmeso
2020-12-01 20:39             ` Bakul Shah
2020-12-01 21:24               ` Dan Cross
2020-12-01 23:44                 ` John Cowan
2020-12-12 19:50           ` scj
2020-12-01 16:47         ` Larry McVoy
2020-12-01 20:13     ` Dave Horsfall
2020-12-01 20:49       ` John Cowan
2020-12-01 16:04 ` Tyler Adams
     [not found] <CAMP=X_mO9oawUpHGOvgVtwVTgcmvdXAc5vrE_+s3d2NsH+1HgA@mail.gmail.com>
2020-12-01  0:00 ` Joachim via TUHS
2020-12-01  0:21   ` Dave Horsfall
2020-12-01  2:23     ` Larry McVoy
2020-12-01  3:13 Norman Wilson
2020-12-02  0:31 ` George Michaelson
2020-12-02  1:06   ` Adam Thornton
2020-12-02 17:02     ` John Cowan
     [not found] <CAKH6PiWA2uN4m0AGp7VRJTQ6XXDLJQweHoHjx2wN=zQYs1onpA@mail.gmail.com>
2020-12-03 20:31 ` M Douglas McIlroy
2020-12-03 20:37   ` Niklas Karlsson
2020-12-03 20:43     ` Larry McVoy
2020-12-03 20:56       ` Ralph Corderoy
2020-12-03 21:01       ` Ben Walton
2020-12-03 21:12       ` Clem Cole
2020-12-04  0:29       ` Dave Horsfall
2020-12-04  0:43         ` Rob Pike
2020-12-04  0:48           ` Larry McVoy
2020-12-04  1:25           ` Dan Cross
2020-12-04  9:27             ` arnold
2020-12-04 11:33               ` Andy Kosela
2020-12-04 13:14                 ` Tyler Adams
2020-12-04 13:17                   ` Niklas Karlsson
2020-12-04 13:22                     ` Tyler Adams
2020-12-04 13:25                       ` Niklas Karlsson
2020-12-04  0:45         ` George Michaelson
2020-12-04  1:10         ` Bakul Shah
2020-12-04  1:17           ` George Michaelson
2020-12-03 20:51     ` M Douglas McIlroy

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