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Groups > comp.lang.c > #105843

Re: lambda functions in C

From Keith Thompson <kst-u@mib.org>
Newsgroups comp.lang.c
Subject Re: lambda functions in C
Date 2017-03-11 17:23 -0800
Organization None to speak of
Message-ID <lnk27vffu4.fsf@kst-u.example.com> (permalink)
References (16 earlier) <oa1piq$rf5$1@dont-email.me> <ff891f05-e5aa-4580-85cb-6b1ea02d97b9@googlegroups.com> <oa1und$c40$1@dont-email.me> <66cb9d2d-bae2-47db-a5e0-a2cbc167e871@googlegroups.com> <oa21ip$6q8$1@dont-email.me>

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jacobnavia <jacob@jacob.remcomp.fr> writes:
> Le 12/03/2017 à 00:30, jameskuyper@verizon.net a écrit :
>> I make extensive use of grep. A command I've issued many times this afternoon was:
>>
>>     grep -l search_string `find . -name "*.cpp" -o -name "*.h"`
>
> Ahhh very interesting. I didn't thought about that. I used the
> recursive option of grep but could not figure out how to avoid binary
> files. Your command filters the files, much better...
>
> Will use that next time.

If you use bash with the "globstar" option enabled

    "shopt -s globstar"

(and I think zsh has a similar feature) this can be simplified to:

    grep -l search_string **/*.{h,c}

(Using .c rather than .cpp to make this more nearly topical.)  It also
deals better with odd characters, particularly spaces, in file and
directory names.  Either solution can generate a *very* long command
line for large source trees, but modern systems and shells typically
don't have a problem with that.  If it is a problem:

    find . -name '*.h' -o -name '*.c' -print0 | xargs -0 grep -l search_string

assuming your find and xargs commands support these options (the GNU
findutils versions do).

The "ctags" command can also be useful if you're looking for
identifiers rather than more complex patterns (both vim and emacs
interface with it).

-- 
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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lambda functions in C Thiago Adams <thiago.adams@gmail.com> - 2017-03-08 10:04 -0800
  Re: lambda functions in C BartC <bc@freeuk.com> - 2017-03-08 18:20 +0000
    Re: lambda functions in C Chad <cdalten@gmail.com> - 2017-03-08 11:12 -0800
      Re: lambda functions in C Thiago Adams <thiago.adams@gmail.com> - 2017-03-08 11:36 -0800
        Re: lambda functions in C scott@slp53.sl.home (Scott Lurndal) - 2017-03-08 20:43 +0000
        Re: lambda functions in C David Brown <david.brown@hesbynett.no> - 2017-03-08 21:55 +0100
          Re: lambda functions in C Thiago Adams <thiago.adams@gmail.com> - 2017-03-08 13:18 -0800
            Re: lambda functions in C Thiago Adams <thiago.adams@gmail.com> - 2017-03-10 12:44 -0800
        Re: lambda functions in C Chad <cdalten@gmail.com> - 2017-03-08 13:03 -0800
    Re: lambda functions in C Thiago Adams <thiago.adams@gmail.com> - 2017-03-08 11:33 -0800
      Re: lambda functions in C scott@slp53.sl.home (Scott Lurndal) - 2017-03-08 20:46 +0000
        Re: lambda functions in C Thiago Adams <thiago.adams@gmail.com> - 2017-03-08 13:25 -0800
      Re: lambda functions in C "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-03-10 13:55 -0500
        Re: lambda functions in C supercat@casperkitty.com - 2017-03-10 11:09 -0800
          Re: lambda functions in C "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-03-10 14:51 -0500
        Re: lambda functions in C BartC <bc@freeuk.com> - 2017-03-10 19:19 +0000
          Re: lambda functions in C "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-03-10 14:53 -0500
            Re: lambda functions in C BartC <bc@freeuk.com> - 2017-03-11 14:17 +0000
              Re: lambda functions in C "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-03-11 06:55 -0800
                Re: lambda functions in C "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-03-11 07:05 -0800
  Re: lambda functions in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-03-08 13:55 -0800
    Re: lambda functions in C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-03-08 23:41 +0000
      Re: lambda functions in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-03-09 05:03 -0800
        Re: lambda functions in C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-03-09 14:06 +0000
        Re: lambda functions in C BartC <bc@freeuk.com> - 2017-03-09 14:20 +0000
          Re: lambda functions in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-03-09 08:07 -0800
            Re: lambda functions in C David Brown <david.brown@hesbynett.no> - 2017-03-09 21:50 +0100
              Re: lambda functions in C GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-09 23:38 +0100
                Re: lambda functions in C Ike Naar <ike@iceland.freeshell.org> - 2017-03-09 22:46 +0000
                Re: lambda functions in C GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-10 08:39 +0100
                Re: lambda functions in C Ike Naar <ike@iceland.freeshell.org> - 2017-03-10 08:03 +0000
                Re: lambda functions in C GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-10 09:22 +0100
                Re: lambda functions in C Ike Naar <ike@iceland.freeshell.org> - 2017-03-10 19:24 +0000
                Re: lambda functions in C GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-10 23:23 +0100
                Re: lambda functions in C Ike Naar <ike@iceland.freeshell.org> - 2017-03-11 18:02 +0000
                Re: lambda functions in C Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-09 20:48 -0500
                Re: lambda functions in C GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-10 08:57 +0100
                Re: lambda functions in C Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-10 11:26 -0500
                Re: lambda functions in C GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-10 17:53 +0100
                Re: lambda functions in C Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-10 13:17 -0500
                Re: lambda functions in C David Brown <david.brown@hesbynett.no> - 2017-03-11 17:11 +0100
                Re: lambda functions in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-03-10 00:38 -0800
                Re: lambda functions in C GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-10 10:23 +0100
                Re: lambda functions in C Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-10 11:37 -0500
                Re: lambda functions in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-03-10 09:07 -0800
                Re: lambda functions in C Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-10 13:22 -0500
                Re: lambda functions in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-03-10 10:47 -0800
                Re: lambda functions in C Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-10 14:57 -0500
                Re: lambda functions in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-03-10 12:26 -0800
                Re: lambda functions in C Chad <cdalten@gmail.com> - 2017-03-10 12:49 -0800
                Re: lambda functions in C GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-10 23:32 +0100
                Re: lambda functions in C Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-11 12:26 -0500
                Re: lambda functions in C David Brown <david.brown@hesbynett.no> - 2017-03-11 17:17 +0100
                Re: lambda functions in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-03-11 10:26 -0800
                Re: lambda functions in C David Brown <david.brown@hesbynett.no> - 2017-03-11 19:48 +0100
                Re: lambda functions in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-03-11 12:02 -0800
                Re: lambda functions in C Ian Collins <ian-news@hotmail.com> - 2017-03-12 09:14 +1300
                Re: lambda functions in C "James R. Kuyper" <jameskuyper@verizon.net> - 2017-03-11 15:44 -0500
                Re: lambda functions in C Ian Collins <ian-news@hotmail.com> - 2017-03-12 09:51 +1300
                Re: lambda functions in C "James R. Kuyper" <jameskuyper@verizon.net> - 2017-03-11 16:11 -0500
                Re: lambda functions in C jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-11 22:21 +0100
                Re: lambda functions in C jameskuyper@verizon.net - 2017-03-11 13:36 -0800
                Re: lambda functions in C jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-11 23:48 +0100
                Re: lambda functions in C Ian Collins <ian-news@hotmail.com> - 2017-03-12 11:55 +1300
                Re: lambda functions in C "James R. Kuyper" <jameskuyper@verizon.net> - 2017-03-11 18:34 -0500
                Re: lambda functions in C Ian Collins <ian-news@hotmail.com> - 2017-03-12 15:23 +1300
                Re: lambda functions in C BartC <bc@freeuk.com> - 2017-03-12 11:42 +0000
                Re: lambda functions in C GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-12 13:49 +0100
                Re: lambda functions in C "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-03-12 10:56 -0700
                Re: lambda functions in C jameskuyper@verizon.net - 2017-03-11 15:30 -0800
                Re: lambda functions in C jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-12 00:37 +0100
                Re: lambda functions in C Keith Thompson <kst-u@mib.org> - 2017-03-11 17:23 -0800
                Re: lambda functions in C David Brown <david.brown@hesbynett.no> - 2017-03-12 14:32 +0100
                Re: lambda functions in C Gareth Owen <gwowen@gmail.com> - 2017-03-12 07:22 +0000
                Re: lambda functions in C Ian Collins <ian-news@hotmail.com> - 2017-03-12 11:10 +1300
                Re: lambda functions in C Ian Collins <ian-news@hotmail.com> - 2017-03-12 11:08 +1300
                Re: lambda functions in C GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-12 00:17 +0100
                Re: lambda functions in C David Brown <david.brown@hesbynett.no> - 2017-03-12 14:14 +0100
                Re: lambda functions in C Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-12 09:54 -0400
                Re: lambda functions in C GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-12 15:10 +0100
                Re: lambda functions in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-03-12 08:08 -0700
                Re: lambda functions in C GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-12 16:49 +0100
                Re: lambda functions in C Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-12 14:28 -0400
                Re: lambda functions in C GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-13 00:03 +0100
                Re: lambda functions in C Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-12 19:15 -0400
                Re: lambda functions in C David Brown <david.brown@hesbynett.no> - 2017-03-12 18:18 +0100
                Re: lambda functions in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-03-12 10:42 -0700
                Re: lambda functions in C David Brown <david.brown@hesbynett.no> - 2017-03-12 20:53 +0100
                Re: lambda functions in C supercat@casperkitty.com - 2017-03-10 07:09 -0800
                Re: lambda functions in C supercat@casperkitty.com - 2017-03-10 08:56 -0800
                Re: lambda functions in C GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-10 08:49 +0100
    Re: lambda functions in C Thiago Adams <thiago.adams@gmail.com> - 2017-03-09 04:12 -0800
  Re: lambda functions in C Alain Ketterlin <alain@universite-de-strasbourg.fr.invalid> - 2017-03-09 10:38 +0100
  Re: lambda functions in C Siri Cruise <chine.bleu@yahoo.com> - 2017-03-09 08:48 -0800
    Re: lambda functions in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-03-09 09:45 -0800
      Re: lambda functions in C Thiago Adams <thiago.adams@gmail.com> - 2017-03-09 09:51 -0800
    Re: lambda functions in C Thiago Adams <thiago.adams@gmail.com> - 2017-03-09 09:50 -0800
      Re: lambda functions in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-03-09 11:08 -0800
        Re: lambda functions in C Ian Collins <ian-news@hotmail.com> - 2017-03-10 08:22 +1300
          Re: lambda functions in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-03-09 12:12 -0800
        Re: lambda functions in C Thiago Adams <thiago.adams@gmail.com> - 2017-03-09 11:29 -0800
      Re: lambda functions in C Siri Cruise <chine.bleu@yahoo.com> - 2017-03-09 13:33 -0800
        Re: lambda functions in C Thiago Adams <thiago.adams@gmail.com> - 2017-03-09 13:42 -0800
          Re: lambda functions in C Ian Collins <ian-news@hotmail.com> - 2017-03-10 11:02 +1300
          Re: lambda functions in C Thiago Adams <thiago.adams@gmail.com> - 2017-03-09 14:30 -0800
          Re: lambda functions in C Siri Cruise <chine.bleu@yahoo.com> - 2017-03-09 15:07 -0800
  Re: lambda functions in C jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-11 21:45 +0100
    Re: lambda functions in C Thiago Adams <thiago.adams@gmail.com> - 2017-03-13 06:13 -0700

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