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Mutex example / tutorial? [closed]
...<thread>
#include <mutex>
std::mutex m;//you can use std::lock_guard if you want to be exception safe
int i = 0;
void makeACallFromPhoneBooth()
{
m.lock();//man gets a hold of the phone booth door and locks it. The other men wait outside
//man happily talks to his wife from ...
np.mean() vs np.average() in Python NumPy?
...verage
np.mean:
try:
mean = a.mean
except AttributeError:
return _wrapit(a, 'mean', axis, dtype, out)
return mean(axis, dtype, out)
np.average:
...
if weights is None :
avg = a.mean(axis)
scl = avg.dtype.type(a.size/avg.size)
else:
#code that does weighted mean here
if retu...
What does “coalgebra” mean in the context of programming?
... property and setPosition function:
class C
private
x, y : Int
_name : String
public
name : String
position : (Int, Int)
setPosition : (Int, Int) → C
We need two parts to represent this class. First, we need to represent the internal state of the object; in th...
commandButton/commandLink/ajax action/listener method not invoked or input value not set/updated
...in web.xml,
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<param-value>Development</param-value>
</context-param>
and you are also not seeing any googlable errors and/or warnings in browser's JavaScript console (press F12 in Chrome/Fi...
Please explain the exec() function and its family
...hat the child can do, and the parent halts until the child calls exec() or _exit().
The parent has to be stopped (and the child is not permitted to return from the current function) since the two processes even share the same stack. This is slightly more efficient for the classic use case of fork() ...
Performance optimization strategies of last resort [closed]
... code, together taking over half the time:
/* IF ALL TASKS DONE, SEND ITC_ACKOP, AND DELETE OP */
if (ptop->current_task >= ILST_LENGTH(ptop->tasklist){
. . .
/* FOR EACH OPERATION REQUEST */
for ( ptop = ILST_FIRST(oplist); ptop != NULL; ptop = ILST_NEXT(oplist, ptop)){
. . .
/* GET CURR...
w3wp process not found
...unning under an App Pool and not my current user.
– L_7337
Jan 25 '16 at 14:34
Perfect this is the answer, on if you a...
What is in your .vimrc? [closed]
...;& line("'\"") <= line("$") |
\ let JumpCursorOnEdit_foo = line("'\"") |
\ let b:doopenfold = 1 |
\ if (foldlevel(JumpCursorOnEdit_foo) > foldlevel(JumpCursorOnEdit_foo - 1)) |
\ let JumpCursorOnEdit_foo = JumpCursorOnEdit_...
What is the performance of Objects/Arrays in JavaScript? (specifically for Google V8)
...V8's source, both implemented in JS itself:
function ArrayPop() {
if (IS_NULL_OR_UNDEFINED(this) && !IS_UNDETECTABLE(this)) {
throw MakeTypeError("called_on_null_or_undefined",
["Array.prototype.pop"]);
}
var n = TO_UINT32(this.length);
if (n == 0) {
...
Compiling simple Hello World program on OS X via command line
...e ld: can't link with a main executable file './a.out' for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)
– Eddified
Jan 31 '14 at 6:32
...