1/14    Why is NULL defined to be "0" in C++ instead of "((void *) 0)" like in
        C?  I have some overloaded functtions where one takes an integer
        parameter and the other a pointer parameter.  When I call it with
        "NULL", the compiler matches it with the integer version instead of
        the pointer version which is a problem.  Other funny effect is that
        sizeof(NULL) is different from sizeof(myPtr).  Thanks.
	...

4/04    Is there a good way to diff 2 files that consist of columns of
        floating point numbers, such that it only tells me if there's a
        difference if the numbers on a given line differ by at least a given
        ratio?  Say, 1%?
        \_ Use Excel.
           1. Open foo.txt in Excel.  It should convert all numbers to cells in
	...

4/29    Why were C and Java designed to require "break;" statements for a
        "case" section to terminate rather than falling-through to the next
        section?  99% of the time poeple want a "case" section to terminate.
        In fact some compilers issue warning if there is no "break;" statement
        in a "case" section.  Why not just design the languages to have
        termination as the default behavior, and provide a "fallthru;"
	...

7/19    In C or C++, how do I write the code of a function with variable
        number of parameters in order to pass the variable parameters to
        another function that also has variable number of parameters?  Thanks.
        \_ The usual way (works on gcc 3.0+, Visual Studio 2005+):
               #define foo(fmt, ...) printf(fmt, ##__VA_ARGS__)
           The cool new way (works on gcc 4.3+):
	...

3/7     I have a C question.  I have the following source code in two identical
        files t.c and t.cpp:
                #include <stdlib.h>
                int main(int argc, char *argv[]) {
                  const char * const * p1;
                  const char * * p2;
	...

2/4     random C programming/linker fu question.  If I have
        int main() { printf("%s is at this adddr %p\n", "strlen", strlen); }
        and soda's /proc/sys/kernel/randomize_va_space is 2 (eg; on)
        why is strlen (or any other libc fn) at the same address every time?
        \_ I don't pretend to actually know the right answer to this, but
           could it have something to do with shared libraries?
	...

2/12    I need a way to make a really big C++ executable (~200MBs) that does
        nothing.  No static initialization either.  Any ideas?
        \_ static link in lots of libraries?
        \_ #define a   i=0; i=0; i=0; i=0; i=0; i=0; i=0; i=0; i=0; i=0;
           #define b   a a a a a a a a a a
           #define c   b b b b b b b b b b
	...

9/28    http://www.tiobe.com/index.php/content/paperinfo/tpci/index.html
        Java is #1!!! Followed by C, PHP, C++, Visual Basic, Perl,
        C#, Python, Javascript, then finally Ruby. The good news is
        Pascal is going waaaay back up!
        \_ C is still more popular than C++?  I feel much better about myself
           now.
	...

8/6     In C one can do "typedef int my_index_t;".  What's the equivalent in
        C#?  Thanks.
        \_ C#? Are you serious? Is this what the class of 2009 learn?
           \_ No.  I have to learn .NET code at work.  I am Class of '93.
           \_ python is what 2009 learns, see the motd thread about recent
              cal courses and languages
	...

7/20    For those who care btw, it looks like eclipse is now A Standard Tool
        at UCB ugrad cs, probably replaced emacs.  Furthermore, people get
        angry at seeing Makefiles, (since eclispe takes care of that).  I
        guess it's just a sign of the times.
        \_ The more people at my work use eclipse the less the code is
           managable in emacs.  I'm not sure which application's fault
	...

7/7     what happened to our web presence? http://www.csua.berkeley.edu
        not working
    \_ That would be because we've yet to set them up afaik. Steven *does* have
    a job after all. The idea is that we want a separate computer mounting the
    web directories, so that if an exploit compromises the webserver, the shell
    server (soda) itself will be insulated from the attack.
	...

5/5     Is there a good (or standard) way to make an offline copy of a w
        ordpress blog (mine, not someone else's)? tia.
        \_ oh man.
           \_ I could cobble something together with curl / wget, but I'd
              rather not if there is a standard way of doing this.  I'm
              pretty new to wordpress / blogging and I just want to keep
	...

11/27   I'm using select to do a nonblocking check to see if a single socket
        has anything to read off it.  Problem is, I can have up to 12228
        file descriptors, and Linux fd_set only supports up to 4096.  Any idea
        what I can do about this?  (Or a better solution?) -jrleek
        \- 1. who are you
           2. i am busy this week and you didnt mention language
	...

1/27    I've enabled suexec and ExecCGI in my apache2. I created a simple
        CGI that when `whoami` is executed, claims as me instead of
        www-data|http. Great. However, when I tried the same thing in
        php, it no longer executes as me. Why is that?
        \_ mod_php 'executed' stuff is run as the webserver uid
        \_ You'd have to run PHP under CGI to get this to work, and then it
	...

1/17    CGI or PHP, which one is better?
        \_ PHP.
        \_ CGI is actually the method by which pretty much all dynamic web
           applications function.  If you mean "CGI scripts", then that doesn't
           really say anything about what language/system you're using.  Perl?
           /bin/sh?  C?
	...

1/16    Okay, I have a technical question here. I administer a cluster
        of java webservers running jetty (not resin, sorry). They are behind
        a load balancer. They used to start up fine under "load" i.e. in
        the load balancer configuration. The latest code release
        broke this somehow and now they crash upon startup unless
        I remove them from the load balancer first. The programmers
	...

7/27    Sorry, I broke my webserver (mod_perl fall down and go boom).
        http://csua.org/u stuff will hopefully be back up by tonight.  --dbushong
        \_ Or...tomorrow.  mod_perl is not happy.  Sigh.
        \_ Does anyone actually USE http://csua.org? I don't and haven't even since
           http://tinyurl.com proved to be much better
           \_ Holy mythical creatures, batman!  His wounds are closing!
	...

11/23   The CSUA webserver is down
        \_ works for me as of 8:56am. --twohey
           \_ I just restarted it.  To the original poster, could you
              please mail root when you notice things are broken?  --mconst
        \_ Now works for me as well.  (It didn't about 10 minutes ago.)
	...

8/25    Looking for a cheap/reliable domain registry company.
        \_ godaddy
           \_ their webserver uses windoze. try http://000domains.com
           \_ my workplace had a few complaints go to godaddy for some
              email marketing (not unsolicited bulk email) a couple years
              ago and had the domains pulled without any checks.  So
	...

7/7     If you're interested in working at Lawrence Livermore National Lab,
        there are quite a few openings.  The first opening I heard about
        today was for working on parallel file systems in Linux, a good OS
        hacking job.  See it at: /csua/pub/jobs/LLNL.  However, there are
        always a lot of jobs for scientific programmers (Familiariry with
        Math, Physics, and/or biology are big pluses). There's also some sys
	...