2014/1/14-2/5 [Computer/SW/Languages/C_Cplusplus] UID:54763 Activity:nil | 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.
...
|
2013/4/29-5/18 [Computer/SW/Languages/C_Cplusplus, Computer/SW/Compilers] UID:54665 Activity:nil | 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;"
...
|
2012/7/19-11/7 [Computer/SW/Languages/C_Cplusplus] UID:54439 Activity:nil | 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+):
...
|
2011/3/7-4/20 [Computer/SW/Languages/C_Cplusplus] UID:54056 Activity:nil | 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;
...
|
2011/2/5-19 [Computer/SW/Languages/C_Cplusplus] UID:54027 Activity:nil | 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?
...
|
2010/2/12-3/9 [Computer/SW/Languages/C_Cplusplus] UID:53708 Activity:nil | 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
...
|
2009/8/7-14 [Computer/SW/Languages/C_Cplusplus, Computer/SW/Languages/Java] UID:53252 Activity:high | 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
...
|
2009/7/21-24 [Computer/SW/Languages/Java] UID:53168 Activity:moderate | 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
...
|
2013/6/6-7/31 [Politics/Foreign/Asia/China, Computer/SW/Security] UID:54690 Activity:nil | 6/6 Wow, NSA rocks. Who would have thought they had access to major
data exchangers? I have much more respect for government workers,
crypto experts, mathematicans now than ever.
\_ flea to Hong Kong --> best dim-sum in the world
\_ "flee"
\_ The dumb ones work for DMV, the smart ones for the NSA. If you
...
|
2013/2/5-3/4 [Politics/Domestic/Immigration] UID:54598 Activity:nil | 2/5 http://www.csua.org/u/z5u (news.yahoo.com)
"I hope no one uses the term 'illegal immigrants' here today," said
Committee Ranking Member John Conyers of Michigan. "Our citizens are
not illeg -- the people in this country are not illegal. They are out
of status."
How did this guy get himself on the House Judiciary Committee? Is it
...
|
2012/12/5-18 [Politics/Domestic/Election] UID:54548 Activity:nil | 12/5 Romney is right after all -- our military does need more horses and
bayonets! http://www.csua.org/u/y3j Romney for 2012!
\_ I'd never considered Romney's campaign as an ad for Revolution,
but I guess that makes as much sense anything else.
\_ The tax cut removal is ill timed.
\_ holy crap. This is scary. US troops are most vulnerable as it is
...
|
2012/5/16-7/20 [Politics/Foreign/Europe] UID:54390 Activity:nil | 5/16 Can anyone tell me what Greece is hoping for by rejecting austerity?
From here it seems like the austerity is a pretty generous attempt
to keep Greece from imploding entirely. Are they hoping the
Germans will put them on eternal state welfare, or what?
Also, why would an outright default mean they must leave the Euro?
Is it just that they won't be able to pay basic gvmt services
...
|
2012/2/26-3/26 [Politics/Foreign] UID:54315 Activity:nil | 2/26 I have dual citizenship. If I leave US and enter country Z, is
there a way I can make the immigration booth "stamp" both passports
(not necessarily stamp, but electronically record) such that both
countries know that I left US for country Z. Then, when I depart
country Z and head back to US, only provide the US passport? I'd
like to do this so country Z thinks that I am permanently residing
...
|
|