| 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
...
|
| 2012/8/29-11/7 [Computer/SW/Security] UID:54467 Activity:nil | 8/29 There was once a CSUA web page which runs an SSH client for logging
on to soda. Does that page still exist? Can someone remind me of the
URL please? Thx.
\_ what do you mean? instruction on how to ssh into soda?
\_ No I think he means the ssh applet, which, iirc, was an applet
that implemented an ssh v1 client. I think this page went away
...
|
| 2011/4/16-7/13 [Computer/SW/Languages/Python] UID:54086 Activity:nil | 4/16 Whoa, I just heard that MIT discontinued 6.001 (classic scheme)
to 6.01. In fact, 6.00, 6.01 and 6.02 all use Python. What the
hell? What has the world become? It's a sad sad day. SICP forever!
\_ old story, they've ditched that shitty book and lang for a while.
\_ I used to think scheme was cool, then I saw Ka Ping Yee's
"Beautiful Code" class aka 61a in python, and converted.
...
|
| 2011/2/24-4/20 [Computer/SW/Languages/Java] UID:54048 Activity:nil | 2/24 Go Programming Language. Anyone here use it? It kind of
reminds me of java-meets python, and well, that is fitting given it's
a GOOG product. What is so special about it?
\_ as I understand it, it's a suitable OOP-y systems language with more
structure than C, less complexity than C++, and less overhead than
Java/Python.
...
|
| 2010/8/8-9/7 [Computer/SW/Languages/C_Cplusplus, Computer/SW/Languages/Web] UID:53914 Activity:nil | 8/8 Trying to make a list of interesting features languages have
touted as this whole PL field comes around, trying to see if they
have basis in the culture of the time: feel free to add some/dispute
1970 C, "portability"
1980 C++, classes, oop, iterators, streams, functors, templates
expert systems
...
|
| 2009/12/5-26 [Computer/SW/Languages/Java] UID:53569 Activity:nil | 12/4 what do people have their JAVA_HOME's set to on soda?
\_ don't. are you trying to get sun java? It is installed, but not
the default. check dpkg -l and dpkg -L
\_ I'm trying to run maven to get scala/lift.net working
properly and it's complaining that JAVA_HOME is not set.
\_ you probably want one of the directories in /usr/lib/jvm,
...
|
|
http://csua.com/feed/