Re: Some ideas about c?

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From	Keith Thompson <kst-u@mib.org>
Newsgroups	comp.lang.c
Subject	Re: Some ideas about c?
Date	Fri, 19 May 2017 12:18:07 -0700
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scott@slp53.sl.home (Scott Lurndal) writes:
> Gareth Owen <gwowen@gmail.com> writes:
>>scott@slp53.sl.home (Scott Lurndal) writes:
>>> Only if they pass the interview screening, and the superfluous colons
>>> would be a huge red negative checkmark around here.
>>
>>I think you'd get through the screening (all other things being
>>excellent) but you'd certainly get a "what's with all the ::'s?" as an
>>interview question.
>
> I'm not so sure.  We hire programmers here, and that would certainly
> be a tickmark in the negative column.   We don't look for people who
> can leverage every feature of the language, but those who can solve
> problems and maintain existing, sometimes decades old, code in
> multiple languages (C, C++, Python, Perl, Verilog, SystemC are the
> main languages).

This is off-topic, since it's about C++, but I'll jump in anyway.

There is a valid reason for writing, for example, `::std::string`
rather than `std::string`.  The identifier `std` is not reserved,
so it would be possible to define a local class or namespace named
`std` with a member named `string`.  Then `std::string` would refer
to that member, not to the standard type declared in the <string>
header.  `::std::string` is unambiguous and doesn't break anything.

It's a trick for avoiding a problem that's unlikely to occur in
practice, and that can be easily avoided by not redefining `std`.
It might partially guard against accidental inclusion of malicious
headers, but if that's a possibility you're probably screwed anyway.
It clutters the code and it's non-idiomatic.  But it is defensible.

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"

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Some ideas about c? Vassilis Spiliopoulos <vassilis@vask1lux.de> - 2017-05-17 23:23 +0300
  Re: Some ideas about c? Ian Collins <ian-news@hotmail.com> - 2017-05-18 08:40 +1200
  Re: Some ideas about c? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-05-17 23:00 +0200
    Re: Some ideas about c? supercat@casperkitty.com - 2017-05-17 14:59 -0700
      Re: Some ideas about c? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-05-18 00:08 +0200
        Re: Some ideas about c? supercat@casperkitty.com - 2017-05-17 22:09 -0700
          Re: Some ideas about c? Ian Collins <ian-news@hotmail.com> - 2017-05-18 18:22 +1200
          Re: Some ideas about c? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-05-18 12:36 +0200
            Re: Some ideas about c? Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-18 03:53 -0700
              Re: Some ideas about c? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-05-18 14:24 +0200
                Re: Some ideas about c? Jerry Stuckle <jstucklex@attglobal.net> - 2017-05-18 08:37 -0400
                Re: Some ideas about c? Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-18 05:47 -0700
                Re: Some ideas about c? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-05-18 15:20 +0200
                Re: Some ideas about c? Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-18 06:28 -0700
                Re: Some ideas about c? scott@slp53.sl.home (Scott Lurndal) - 2017-05-18 13:56 +0000
                Re: Some ideas about c? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-05-18 16:30 +0200
                Re: Some ideas about c? Thiago Adams <thiago.adams@gmail.com> - 2017-05-18 07:45 -0700
                Re: Some ideas about c? Richard Heathfield <rjh@cpax.org.uk> - 2017-05-18 16:08 +0100
                Re: Some ideas about c? Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-18 08:15 -0700
                Re: Some ideas about c? Jerry Stuckle <jstucklex@attglobal.net> - 2017-05-18 11:46 -0400
                Re: Some ideas about c? Vassilis Spiliopoulos <vassilis@vask1lux.de> - 2017-05-18 21:33 +0300
                Re: Some ideas about c? Jerry Stuckle <jstucklex@attglobal.net> - 2017-05-18 15:29 -0400
                Re: Some ideas about c? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-05-19 01:23 +0200
                Re: Some ideas about c? Thiago Adams <thiago.adams@gmail.com> - 2017-05-18 18:12 -0700
                Re: Some ideas about c? Thiago Adams <thiago.adams@gmail.com> - 2017-05-18 10:08 -0700
                Re: Some ideas about c? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-05-19 00:39 +0200
                Re: Some ideas about c? Vassilis Spiliopoulos <vassilis@vask1lux.de> - 2017-05-19 14:27 +0300
                Re: Some ideas about c? David Brown <david.brown@hesbynett.no> - 2017-05-19 13:41 +0200
                Re: Some ideas about c? Richard Heathfield <rjh@cpax.org.uk> - 2017-05-19 13:04 +0100
                Re: Some ideas about c? Keith Thompson <kst-u@mib.org> - 2017-05-19 10:00 -0700
                Re: Some ideas about c? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-05-19 14:14 +0200
                Re: Some ideas about c? Jerry Stuckle <jstucklex@attglobal.net> - 2017-05-18 11:33 -0400
                Re: Some ideas about c? Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-18 08:47 -0700
                Re: Some ideas about c? supercat@casperkitty.com - 2017-05-18 08:48 -0700
                Re: Some ideas about c? Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-18 09:02 -0700
                Re: Some ideas about c? supercat@casperkitty.com - 2017-05-18 10:52 -0700
                Re: Some ideas about c? Jerry Stuckle <jstucklex@attglobal.net> - 2017-05-18 15:35 -0400
                Re: Some ideas about c? supercat@casperkitty.com - 2017-05-18 14:01 -0700
                Re: Some ideas about c? Jerry Stuckle <jstucklex@attglobal.net> - 2017-05-18 17:38 -0400
                Re: Some ideas about c? supercat@casperkitty.com - 2017-05-18 15:54 -0700
                Re: Some ideas about c? Jerry Stuckle <jstucklex@attglobal.net> - 2017-05-18 22:17 -0400
                Re: Some ideas about c? John Bode <jfbode1029@gmail.com> - 2017-05-18 08:06 -0700
                Re: Some ideas about c? John Bode <jfbode1029@gmail.com> - 2017-05-18 09:17 -0700
  Re: Some ideas about c? fir <profesor.fir@gmail.com> - 2017-05-17 14:34 -0700
    Re: Some ideas about c? Vassilis Spiliopoulos <vassilis@vask1lux.de> - 2017-05-18 16:16 +0300
  Re: Some ideas about c? Cholo Lennon <chololennon@hotmail.com> - 2017-05-18 10:26 -0300
  Re: Some ideas about c? John Bode <jfbode1029@gmail.com> - 2017-05-18 07:36 -0700
    Re: Some ideas about c? scott@slp53.sl.home (Scott Lurndal) - 2017-05-18 18:23 +0000
      Re: Some ideas about c? Gareth Owen <gwowen@gmail.com> - 2017-05-18 21:51 +0100
        Re: Some ideas about c? scott@slp53.sl.home (Scott Lurndal) - 2017-05-19 12:38 +0000
          Re: Some ideas about c? supercat@casperkitty.com - 2017-05-19 07:44 -0700
            Re: Some ideas about c? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-05-19 16:45 +0100
              Re: Some ideas about c? Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-19 21:59 -0700
            Re: Some ideas about c? Keith Thompson <kst-u@mib.org> - 2017-05-19 10:06 -0700
              Re: Some ideas about c? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-05-19 18:18 +0100
                Re: Some ideas about c? Keith Thompson <kst-u@mib.org> - 2017-05-19 11:59 -0700
                Re: Some ideas about c? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-05-19 21:05 +0100
          Re: Some ideas about c? "James R. Kuyper" <jameskuyper@verizon.net> - 2017-05-19 12:42 -0400
            Re: Some ideas about c? Richard Heathfield <rjh@cpax.org.uk> - 2017-05-19 17:54 +0100
            Re: Some ideas about c? Gareth Owen <gwowen@gmail.com> - 2017-05-19 18:52 +0100
          Re: Some ideas about c? Gareth Owen <gwowen@gmail.com> - 2017-05-19 18:51 +0100
            Re: Some ideas about c? scott@slp53.sl.home (Scott Lurndal) - 2017-05-19 18:55 +0000
              Re: Some ideas about c? Gareth Owen <gwowen@gmail.com> - 2017-05-19 19:58 +0100
              Re: Some ideas about c? Keith Thompson <kst-u@mib.org> - 2017-05-19 12:12 -0700
            Re: Some ideas about c? Keith Thompson <kst-u@mib.org> - 2017-05-19 12:01 -0700
    Re: Some ideas about c? Ian Collins <ian-news@hotmail.com> - 2017-05-19 08:22 +1200
      Re: Some ideas about c? Gareth Owen <gwowen@gmail.com> - 2017-05-18 21:53 +0100
      Re: Some ideas about c? scott@slp53.sl.home (Scott Lurndal) - 2017-05-19 12:36 +0000
        Re: Some ideas about c? Gareth Owen <gwowen@gmail.com> - 2017-05-19 18:54 +0100
          Re: Some ideas about c? scott@slp53.sl.home (Scott Lurndal) - 2017-05-19 18:58 +0000
            Re: Some ideas about c? Keith Thompson <kst-u@mib.org> - 2017-05-19 12:18 -0700

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