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How to get process ID of background process?
... number of background process as seen from jobs):
$ echo $$
3748
$ sleep 100 &
[1] 192
$ echo $!
192
$ kill %1
[1]+ Terminated sleep 100
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...
Throw keyword in function's signature
... :
};
size_t MethodThatCannotThrow() throw()
{
return 100;
};
void ExampleMethod()
{
size_t foo, bar;
try
{
foo = CalculateFoo();
bar = foo * 100;
MethodThatCannotThrow();
printf("bar is %d", bar...
How can I change the default width of a Twitter Bootstrap modal box?
...
+100
If you want to make it responsive with just CSS, use this:
.modal.large {
width: 80%; /* respsonsive width */
margin-left:-...
examining history of deleted file
...
If I have a repo with 100,000 commits, "lastrevisionthefileexisted" is not easy to find!
– Jon Watte
Jul 6 '16 at 19:55
...
How efficient is locking an unlocked mutex? What is the cost of a mutex?
... is slightly faster.
The above function is called in a tight loop of size 100,000. Despite that the function is slightly faster for thread 1, both loops synchronize because of the call to the mutex. This is visible in the graph from the fact that the number of clocks measured for the lock/unlock pa...
How can I check if a Perl array contains a particular value?
...
Best general purpose - Especially short arrays (1000 items or less) and coders that are unsure of what optimizations best suit their needs.
# $value can be any regex. be safe
if ( grep( /^$value$/, @array ) ) {
print "found it";
}
It has been mentioned that grep passe...
What is the performance of Objects/Arrays in JavaScript? (specifically for Google V8)
...
+100
I created a test suite, precisely to explore these issues (and more) (archived copy).
And in that sense, you can see the performanc...
Bootstrap 3 Flush footer to bottom. not fixed
...page has more content.
CSS
* {
margin: 0;
}
html, body {
height: 100%;
}
.wrapper {
min-height: 100%;
height: 100%;
margin: 0 auto -155px; /* the bottom margin is the negative value of the footer's height */
}
.footer, .push {
height: 155px; /* .push must be the same height...
Capture HTML Canvas as gif/jpg/png/pdf?
...
context.fillStyle = "green";
context.fillRect(50, 50, 100, 100);
// no argument defaults to image/png; image/jpeg, etc also work on some
// implementations -- image/png is the only one that must be supported per spec.
window.location = canvas.toData...
OceanBase使用libeasy原理源码分析：服务器端 - 数据库(内核) - 清泛网 - ...
...已经处理的请求数
3.3 初始化成员变量listen_watcher, 每100ms触发一次对于listen的切换(回调函数easy_connection_on_listen)，实际上，在刚启动的时候，是100ms，当有IO线程抢到listen的权利后，这个timer会被改成60s，随后，每60s进行一次li...