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Groups > comp.lang.c > #15863

Re: Tree implementation, ideas for keyboard input method needed

From Kaz Kylheku <kaz@kylheku.com>
Newsgroups comp.lang.c
Subject Re: Tree implementation, ideas for keyboard input method needed
Date 2012-01-16 22:53 +0000
Organization A noiseless patient Spider
Message-ID <20120116144531.756@kylheku.com> (permalink)
References <Xns9FDCEA347419Bbubbachipsetone@130.133.4.11> <lnzkdnz3j3.fsf@nuthaus.mib.org> <Xns9FDCF01D6D14Ebubbachipsetone@130.133.4.11>

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On 2012-01-16, Bubba <nickname@banelli.biz.invalid> wrote:
> Keith Thompson's log on stardate 16 sij 2012
>
> I hoped for something like this in the first place, so thank you in 
> advance!
>
>> Identifiers starting with underscores are reserved to the
>> implementation in most contexts.  Identifiers starting with two
>> underscores are reserved in all contexts.  You should never define
>> such identifiers yourself (unless you're writing code for a C
>> compiler or library implementation).
>
> What are the repercussions of choosing wrong number of underscores? :)

The repercussions are that any of your compiler or library headers are
completely free to have things like this in them:

  #define __celltype blorch[

This namespace does not belong to you, but to the implementors. 

(Since C doesn't have namespaces, we have to draw these borders within the
identifiers themselves.)

Even if you haven no clash now with __celltype, you could have one tomorrow,
when you include some header that you did not previously include, port your
program to a different system, or upgrade (or downgrade) to a different version
of the compiler or any of your libraries, etc.

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Thread

Tree implementation, ideas for keyboard input method needed Bubba <nickname@banelli.biz.invalid> - 2012-01-16 22:01 +0000
  Re: Tree implementation, ideas for keyboard input method needed Keith Thompson <kst-u@mib.org> - 2012-01-16 14:27 -0800
    Re: Tree implementation, ideas for keyboard input method needed Bubba <nickname@banelli.biz.invalid> - 2012-01-16 22:36 +0000
      Re: Tree implementation, ideas for keyboard input method needed Kaz Kylheku <kaz@kylheku.com> - 2012-01-16 22:53 +0000
      Re: Tree implementation, ideas for keyboard input method needed James Kuyper <jameskuyper@verizon.net> - 2012-01-16 18:06 -0500
      Re: Tree implementation, ideas for keyboard input method needed Keith Thompson <kst-u@mib.org> - 2012-01-16 16:41 -0800
    Re: Tree implementation, ideas for keyboard input method needed Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-01-16 23:01 +0000
      Re: Tree implementation, ideas for keyboard input method needed Shao Miller <sha0.miller@gmail.com> - 2012-01-16 19:49 -0500
        Re: Tree implementation, ideas for keyboard input method needed Keith Thompson <kst-u@mib.org> - 2012-01-16 17:46 -0800
  Re: Tree implementation, ideas for keyboard input method needed Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-01-16 22:29 +0000
    Re: Tree implementation, ideas for keyboard input method needed Bubba <nickname@banelli.biz.invalid> - 2012-01-16 22:38 +0000
    Re: Tree implementation, ideas for keyboard input method needed William Ahern <william@wilbur.25thandClement.com> - 2012-01-16 15:30 -0800
      Re: Tree implementation, ideas for keyboard input method needed Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-01-17 00:03 +0000
      Re: Tree implementation, ideas for keyboard input method needed Keith Thompson <kst-u@mib.org> - 2012-01-16 16:35 -0800
        Re: Tree implementation, ideas for keyboard input method needed cri@tiac.net (Richard Harter) - 2012-01-17 02:00 +0000
          Re: Tree implementation, ideas for keyboard input method needed Keith Thompson <kst-u@mib.org> - 2012-01-16 19:16 -0800
            Re: Tree implementation, ideas for keyboard input method needed cri@tiac.net (Richard Harter) - 2012-01-17 05:15 +0000
              Re: Tree implementation, ideas for keyboard input method needed Keith Thompson <kst-u@mib.org> - 2012-01-17 00:00 -0800
          Re: Tree implementation, ideas for keyboard input method needed Kaz Kylheku <kaz@kylheku.com> - 2012-01-17 04:04 +0000
  Re: Tree implementation, ideas for keyboard input method needed Kaz Kylheku <kaz@kylheku.com> - 2012-01-16 22:44 +0000
  Re: Tree implementation, ideas for keyboard input method needed Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-01-16 17:58 -0500
  Re: Tree implementation, ideas for keyboard input method needed ImpalerCore <jadill33@gmail.com> - 2012-01-16 19:36 -0800
    Re: Tree implementation, ideas for keyboard input method needed Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-01-16 23:33 -0500
      Re: Tree implementation, ideas for keyboard input method needed ImpalerCore <jadill33@gmail.com> - 2012-01-17 07:18 -0800
    Re: Tree implementation, ideas for keyboard input method needed "BartC" <bc@freeuk.com> - 2012-01-17 13:54 +0000
      Re: Tree implementation, ideas for keyboard input method needed ImpalerCore <jadill33@gmail.com> - 2012-01-17 07:39 -0800
    Re: Tree implementation, ideas for keyboard input method needed Kaz Kylheku <kaz@kylheku.com> - 2012-01-17 19:01 +0000
  Re: Tree implementation, ideas for keyboard input method needed jgk@panix.com (Joe keane) - 2012-01-18 21:21 +0000

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