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Fastest way to reset every value of std::vector to 0
...formance under real conditions.
end Edit
for reference the used code:
#include <vector>
#define TEST_METHOD 1
const size_t TEST_ITERATIONS = 100000;
const size_t TEST_ARRAY_SIZE = 10000;
int main(int argc, char** argv) {
std::vector<int> v(TEST_ARRAY_SIZE, 0);
for(size_t i ...
CSS “and” and “or”
...registration_form_right input:not([type="radio"]) will apply to everything including checkbox, and .registration_form_right input:not([type="checkbox"]) will apply to everything, including radio
– Misiur
May 9 '10 at 9:07
...
Can gcc output C code after preprocessing?
...t-in>"
# 1 "<command-line>"
# 31 "<command-line>"
# 1 "/usr/include/stdc-predef.h" 1 3 4
# 32 "<command-line>" 2
# 1 "main.c"
int myfunc(int i) {
return i + 1;
}
main.s is a bonus :-) and contains the generated assembly:
.file "main.c"
.text
.globl myfunc
...
Save PL/pgSQL output from PostgreSQL to a CSV file
...users” table…
I've written a blog post expanding on this approach, including some examples of functions that export (or import) files and tables meeting strict conditions.
Client side
The other approach is to do the file handling on the client side, i.e. in your application or script. The ...
How to use enums in C++
...T,
ZONECREATION,
SHUTDOWN,
NOCHANGE
};
#endif
Somefile.cpp
#include "EnumAppState.h"
eAppState state = eAppState::STARTUP;
switch(state)
{
case STARTUP:
//Do stuff
break;
case EDIT:
//Do stuff
break;
case ZONECREATION:
//Do stuff
break;
case SHUTDOWN:
//Do ...
Java null check why use == instead of .equals()
...
@user368186: the point isn't whether the equals method includes a null check. If your object reference is null, then the call someObject.equals(null) will raise a NullPointerException without ever entering the equals method.
– Dave Costa
De...
How to escape text for regular expression in Java
Does Java have a built-in way to escape arbitrary text so that it can be included in a regular expression? For example, if my users enter "$5", I'd like to match that exactly rather than a "5" after the end of input.
...
How do I split a multi-line string into multiple lines?
...; ['Line 1', 'Line 2', 'Line 3']
Alternatively, if you want each line to include the break sequence (CR,LF,CRLF), use the splitlines method with a True argument:
inputString.splitlines(True) # --> ['Line 1\n', 'Line 2\n', 'Line 3']
...
Simplest way to profile a PHP script
... at each checkpoint, and prof_print() at the end:
prof_flag("Start");
include '../lib/database.php';
include '../lib/helper_func.php';
prof_flag("Connect to DB");
connect_to_db();
prof_flag("Perform query");
// Get all the data
$select_query = "SELECT * FROM data_table";
$re...
Error handling in C code
...s03.html
http://www.di.unipi.it/~nids/docs/longjump_try_trow_catch.html
#include <setjmp.h>
#include <stdio.h>
jmp_buf x;
void f()
{
longjmp(x,5); // throw 5;
}
int main()
{
// output of this program is 5.
int i = 0;
if ( (i = setjmp(x)) == 0 )// try{
{
...