Re: Reversing a linked list

From	James Kuyper <jameskuyper@verizon.net>
Newsgroups	comp.lang.c
Subject	Re: Reversing a linked list
Date	2011-09-20 23:00 -0400
Organization	A noiseless patient Spider
Message-ID	<j5bk0r$d2r$1@dont-email.me> (permalink)
References	(8 earlier) <d648e169-8c24-43a5-9700-c15128ac5235@b28g2000yqa.googlegroups.com> <ln4o0974s6.fsf@nuthaus.mib.org> <2694599f-274b-4006-8371-74a1c05c7414@c22g2000yqa.googlegroups.com> <lnvcso5v3b.fsf@nuthaus.mib.org> <944ecea5-2117-4609-8b84-a75ef074c632@8g2000yqm.googlegroups.com>

Show all headers | View raw

On 09/20/2011 08:48 PM, henry eshbaugh wrote:
> On Sep 19, 12:56�pm, Keith Thompson <ks...@mib.org> wrote:
>> The only code it would break is already broken.
>>
>> It's completely pointless to use identifiers starting with "__".
>> By doing so, you risk colliding with identifiers used by the
>> implementation. �By using identifiers that start with letters,
>> you avoid that risk -- at no cost.
>>
>> I don't *care* whether any compilers use the name "__foo" internally,
>> because I don't define reserved identifiers in my own code.
>>
>> Exactly what benefit do you get by calling your own function "__foo"
>> (rather than, say, "foo__")?
>>
>> You have a choice between writing code with well defined behavior and
>> writing code with undefined behavior. �Why do you chose the latter?
> 
> It's a coding style issue. I use them for internal functions.

"coding style" is not a term ordinarily used to describe deliberate
adoption of practices that, according to the C standard, have undefined
behavior.

> And it's not just me. You know who else happens to do that? The small
> army of Linux kernel programmers.

Guess what: the Linux kernal is part of a C implementation. The key
reason why you're not supposed to use these names is because they ARE
supposed to use them. They're NOT supposed to use the names that are
reserved for your use.

> The point is, it's not some bizarre coding style choice I made. It's
> used by an army of highly skilled programmers (kernel code is
> PAINFUL.) These people know what they're doing, more so than you or I.

Both Keith and I are very experienced programmers with a comprehensive
and detailed knowledge of precisely what it is that the C standard
requires and allows. I would not recommend automatically assuming that
those people know more than we do, just because they know a lot more
than you do.

> And they use it.

Yes - because they know enough to recognize which name space has been
reserved for their use - it is NOT the same name space that has been
reserved for your use. I recommend you acquire the same understanding
they have; because that same understanding will result in you using very
different naming conventions than they do.
-- 
James Kuyper

Thread

Reversing a linked list jacob navia <jacob@spamsink.net> - 2011-09-16 08:30 +0200
  Re: Reversing a linked list jacob navia <jacob@spamsink.net> - 2011-09-16 08:33 +0200
  Re: Reversing a linked list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-09-16 12:51 +0100
    Re: Reversing a linked list jacob navia <jacob@spamsink.net> - 2011-09-16 14:18 +0200
      Re: Reversing a linked list jacob navia <jacob@spamsink.net> - 2011-09-16 14:26 +0200
        Re: Reversing a linked list Malcolm McLean <malcolm.mclean5@btinternet.com> - 2011-09-16 07:09 -0700
          Re: Reversing a linked list ImpalerCore <jadill33@gmail.com> - 2011-09-16 08:28 -0700
            Re: Reversing a linked list falk@rahul.net (Edward A. Falk) - 2011-09-16 16:34 +0000
            Re: Reversing a linked list Malcolm McLean <malcolm.mclean5@btinternet.com> - 2011-09-16 09:28 -0700
              Re: Reversing a linked list ImpalerCore <jadill33@gmail.com> - 2011-09-16 11:12 -0700
                Re: Reversing a linked list "Tony" <nospamme@ever.net> - 2011-09-16 20:01 -0500
      Re: Reversing a linked list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-09-16 21:56 +0100
        Re: Reversing a linked list "Tony" <nospamme@ever.net> - 2011-09-16 20:16 -0500
          Re: Reversing a linked list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-09-17 02:48 +0100
            Re: Reversing a linked list "Tony" <nospamme@ever.net> - 2011-09-16 22:15 -0500
              Re: Reversing a linked list jacob navia <jacob@spamsink.net> - 2011-09-17 07:40 +0200
                Re: Reversing a linked list "Tony" <nospamme@ever.net> - 2011-09-17 01:24 -0500
                Re: Reversing a linked list cri@tiac.net (Richard Harter) - 2011-09-17 15:07 +0000
                Re: Reversing a linked list jacob navia <jacob@spamsink.net> - 2011-09-17 17:47 +0200
                Re: Reversing a linked list jacob navia <jacob@spamsink.net> - 2011-09-17 17:54 +0200
                Re: Reversing a linked list Michael Press <rubrum@pacbell.net> - 2011-09-27 19:21 -0700
              Re: Reversing a linked list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-09-17 12:00 +0100
                Re: Reversing a linked list "Tony" <nospamme@ever.net> - 2011-09-17 23:53 -0500
    Re: Reversing a linked list ImpalerCore <jadill33@gmail.com> - 2011-09-16 07:21 -0700
      Re: Reversing a linked list jacob navia <jacob@spamsink.net> - 2011-09-16 16:47 +0200
        Re: Reversing a linked list Malcolm McLean <malcolm.mclean5@btinternet.com> - 2011-09-16 08:20 -0700
        Re: Reversing a linked list "Tony" <nospamme@ever.net> - 2011-09-16 20:25 -0500
      Re: Reversing a linked list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-09-16 22:32 +0100
      Re: Reversing a linked list pete <pfiland@mindspring.com> - 2011-09-16 17:53 -0400
    Re: Reversing a linked list "Tony" <nospamme@ever.net> - 2011-09-16 19:48 -0500
      Re: Reversing a linked list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-09-17 02:41 +0100
        Re: Reversing a linked list "Tony" <nospamme@ever.net> - 2011-09-16 22:57 -0500
          Re: Reversing a linked list "BartC" <bc@freeuk.com> - 2011-09-17 12:48 +0100
            Re: Reversing a linked list jacob navia <jacob@spamsink.net> - 2011-09-17 13:55 +0200
            Re: Reversing a linked list "Tony" <nospamme@ever.net> - 2011-09-17 23:39 -0500
  Re: Reversing a linked list HENRY Eshbaugh <henryeshbaugh@gmail.com> - 2011-09-16 16:56 -0700
    Re: Reversing a linked list Ian Collins <ian-news@hotmail.com> - 2011-09-17 12:09 +1200
      Re: Reversing a linked list HENRY Eshbaugh <henryeshbaugh@gmail.com> - 2011-09-16 19:53 -0700
        Re: Reversing a linked list "Tony" <nospamme@ever.net> - 2011-09-16 23:00 -0500
          Re: Reversing a linked list Jonathan Leffler <jleffler@earthlink.net> - 2011-09-16 23:20 -0700
          Re: Reversing a linked list Keith Thompson <kst-u@mib.org> - 2011-09-17 13:46 -0700
            Re: Reversing a linked list henry eshbaugh <henryeshbaugh@gmail.com> - 2011-09-17 19:51 -0700
              Re: Reversing a linked list Keith Thompson <kst-u@mib.org> - 2011-09-18 01:28 -0700
                Re: Reversing a linked list henry eshbaugh <henryeshbaugh@gmail.com> - 2011-09-18 15:39 -0700
                Re: Reversing a linked list Kleuskes & Moos <kleuske@somewhere.else.net> - 2011-09-18 22:43 +0000
                Re: Reversing a linked list henry eshbaugh <henryeshbaugh@gmail.com> - 2011-09-18 17:54 -0700
                Re: Reversing a linked list James Kuyper <jameskuyper@verizon.net> - 2011-09-18 21:20 -0400
                Re: Reversing a linked list Keith Thompson <kst-u@mib.org> - 2011-09-18 17:30 -0700
                Re: Reversing a linked list henry eshbaugh <henryeshbaugh@gmail.com> - 2011-09-18 17:51 -0700
                Re: Reversing a linked list James Kuyper <jameskuyper@verizon.net> - 2011-09-18 21:34 -0400
                Re: Reversing a linked list Robert Wessel <robertwessel2@yahoo.com> - 2011-09-18 21:25 -0500
                Re: Reversing a linked list Keith Thompson <kst-u@mib.org> - 2011-09-19 09:56 -0700
                Re: Reversing a linked list gazelle@shell.xmission.com (Kenny McCormack) - 2011-09-19 17:16 +0000
                Re: Reversing a linked list Willem <willem@toad.stack.nl> - 2011-09-19 17:25 +0000
                Re: Reversing a linked list Malcolm McLean <malcolm.mclean5@btinternet.com> - 2011-09-19 23:40 -0700
                Re: Reversing a linked list henry eshbaugh <henryeshbaugh@gmail.com> - 2011-09-20 17:55 -0700
                Re: Reversing a linked list henry eshbaugh <henryeshbaugh@gmail.com> - 2011-09-20 17:48 -0700
                Re: Reversing a linked list Geoff <geoff@invalid.invalid> - 2011-09-20 19:12 -0700
                Re: Reversing a linked list henry eshbaugh <henryeshbaugh@gmail.com> - 2011-09-21 10:15 -0700
                Re: Reversing a linked list David Resnick <lndresnick@gmail.com> - 2011-09-22 08:43 -0700
                Re: Reversing a linked list Malcolm McLean <malcolm.mclean5@btinternet.com> - 2011-09-23 02:45 -0700
                Re: Reversing a linked list David Resnick <lndresnick@gmail.com> - 2011-09-23 05:38 -0700
                Re: Reversing a linked list Malcolm McLean <malcolm.mclean5@btinternet.com> - 2011-09-23 07:58 -0700
                Re: Reversing a linked list David Resnick <lndresnick@gmail.com> - 2011-09-23 08:15 -0700
                Re: Reversing a linked list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-09-23 18:00 +0100
                Re: Reversing a linked list David Resnick <lndresnick@gmail.com> - 2011-09-23 10:49 -0700
                Re: Reversing a linked list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-09-23 20:05 +0100
                Re: Reversing a linked list pete <pfiland@mindspring.com> - 2011-09-23 18:05 -0400
                Re: Reversing a linked list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-09-24 00:19 +0100
                Re: Reversing a linked list ImpalerCore <jadill33@gmail.com> - 2011-09-23 09:25 -0700
                Re: Reversing a linked list Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2011-09-22 22:49 +0300
                Re: Reversing a linked list Keith Thompson <kst-u@mib.org> - 2011-09-20 19:51 -0700
                Re: Reversing a linked list henry eshbaugh <henryeshbaugh@gmail.com> - 2011-09-21 09:51 -0700
                Re: Reversing a linked list Keith Thompson <kst-u@mib.org> - 2011-09-21 11:21 -0700
                Re: Reversing a linked list James Kuyper <jameskuyper@verizon.net> - 2011-09-20 23:00 -0400
                Re: Reversing a linked list henry eshbaugh <henryeshbaugh@gmail.com> - 2011-09-21 09:47 -0700
                Re: Reversing a linked list Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2011-09-23 11:22 +0300
                Re: Reversing a linked list Keith Thompson <kst-u@mib.org> - 2011-09-23 08:20 -0700
                Re: Reversing a linked list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-09-23 18:12 +0100
                Re: Reversing a linked list Tim Rentsch <txr@alumni.caltech.edu> - 2012-01-24 13:13 -0800
                Re: Reversing a linked list Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2011-09-23 23:49 +0300
                Re: Reversing a linked list James Kuyper <jameskuyper@verizon.net> - 2011-09-24 08:15 -0400
                Re: Reversing a linked list Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2011-09-24 20:15 +0300
                Re: Reversing a linked list Tim Rentsch <txr@alumni.caltech.edu> - 2012-01-24 13:28 -0800
                Re: Reversing a linked list Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2012-02-12 01:41 +0200
                Re: Reversing a linked list Tim Rentsch <txr@alumni.caltech.edu> - 2012-03-08 09:08 -0800
                Re: Reversing a linked list Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2012-03-13 17:21 +0200
                Re: Reversing a linked list Tim Rentsch <txr@alumni.caltech.edu> - 2012-01-24 13:04 -0800
                Re: Reversing a linked list Seebs <usenet-nospam@seebs.net> - 2011-09-23 01:46 +0000
                Re: Reversing a linked list James Kuyper <jameskuyper@verizon.net> - 2011-09-18 21:17 -0400
            Re: Reversing a linked list "Tony" <nospamme@ever.net> - 2011-09-17 23:50 -0500
              Re: Reversing a linked list Keith Thompson <kst-u@mib.org> - 2011-09-18 01:29 -0700
        Re: Reversing a linked list Seebs <usenet-nospam@seebs.net> - 2011-09-18 07:03 +0000
    Re: Reversing a linked list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-09-17 02:13 +0100
      Re: Reversing a linked list HENRY Eshbaugh <henryeshbaugh@gmail.com> - 2011-09-16 19:52 -0700
        Re: Reversing a linked list Willem <willem@toad.stack.nl> - 2011-09-17 08:58 +0000
          Re: Reversing a linked list henry eshbaugh <henryeshbaugh@gmail.com> - 2011-09-18 15:32 -0700
            Re: Reversing a linked list James Kuyper <jameskuyper@verizon.net> - 2011-09-18 21:36 -0400
              Re: Reversing a linked list cri@tiac.net (Richard Harter) - 2011-09-19 05:24 +0000
                Re: Reversing a linked list James Kuyper <jameskuyper@verizon.net> - 2011-09-19 08:21 -0400
                Re: Reversing a linked list cri@tiac.net (Richard Harter) - 2011-09-19 14:28 +0000
                Re: Reversing a linked list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-09-19 17:01 +0100
                Re: Reversing a linked list cri@tiac.net (Richard Harter) - 2011-09-19 16:25 +0000
                Re: Reversing a linked list henry eshbaugh <henryeshbaugh@gmail.com> - 2011-09-21 10:41 -0700
                Re: Reversing a linked list Kleuskes & Moos <kleuske@somewhere.else.net> - 2011-09-21 17:58 +0000
                Re: Reversing a linked list James Kuyper <jameskuyper@verizon.net> - 2011-09-21 14:07 -0400
                Re: Reversing a linked list Malcolm McLean <malcolm.mclean5@btinternet.com> - 2011-09-21 11:15 -0700
                Re: Reversing a linked list Keith Thompson <kst-u@mib.org> - 2011-09-21 11:37 -0700
                Re: Reversing a linked list Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2011-09-23 11:50 +0300
                Re: Reversing a linked list Seebs <usenet-nospam@seebs.net> - 2011-09-23 01:46 +0000
    Re: Reversing a linked list Geoff <geoff@invalid.invalid> - 2011-09-18 18:22 -0700
  Re: Reversing a linked list "Tony" <nospamme@ever.net> - 2011-09-16 19:37 -0500
    Re: Reversing a linked list jacob navia <jacob@spamsink.net> - 2011-09-17 07:52 +0200
      Re: Reversing a linked list "Tony" <nospamme@ever.net> - 2011-09-17 02:09 -0500
        Re: Reversing a linked list Ian Collins <ian-news@hotmail.com> - 2011-09-17 19:35 +1200
          Re: Reversing a linked list "Tony" <nospamme@ever.net> - 2011-09-17 03:35 -0500
        Programming languages jacob navia <jacob@spamsink.net> - 2011-09-17 22:14 +0200
          Re: Programming languages "Tony" <nospamme@ever.net> - 2011-09-18 00:11 -0500
            Re: Programming languages jacob navia <jacob@spamsink.net> - 2011-09-18 08:37 +0200
            Re: Programming languages Seebs <usenet-nospam@seebs.net> - 2011-09-18 07:03 +0000
              Re: Programming languages jacob navia <jacob@spamsink.net> - 2011-09-18 09:50 +0200
              Re: Programming languages Keith Thompson <kst-u@mib.org> - 2011-09-18 01:31 -0700
                Re: Programming languages James Kuyper <jameskuyper@verizon.net> - 2011-09-18 06:43 -0400
                Re: Programming languages Nick Keighley <nick_keighley_nospam@hotmail.com> - 2011-09-18 07:42 -0700
                Re: Programming languages "Tony" <nospamme@ever.net> - 2011-09-18 04:05 -0500
            Re: Programming languages Nick Keighley <nick_keighley_nospam@hotmail.com> - 2011-09-18 07:40 -0700
  Re: Reversing a linked list Gene <gene.ressler@gmail.com> - 2011-09-22 06:59 -0700

csiph-web