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Force Screen On
...
Does that prevent the device from sleeping? If so, the commonness of WAKE_LOCK strikes me as a shocking mistake!
– Michael Cramer
Jan 25 '10 at 18:52
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WPF Timer Like C# Timer
...ling)
{
thread::Thread.Sleep(Interval);
Application.Current.Dispatcher.Invoke(AsyncTick);
}
}
else
{
canceled = false;
...
How to make ThreadPoolExecutor's submit() method block if it is saturated?
...that getActiveCount() doesn't exceed getMaximumPoolSize(), and if it does, sleep and try again?
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std::unique_lock or std::lock_guard?
...e lock.
In particular, condition_variable unlocks its mutex when going to sleep upon calls to wait. That is why a lock_guard is not sufficient here.
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Usage of sys.stdout.flush() method
...ort sys
for i in range(5):
print(i),
#sys.stdout.flush()
time.sleep(1)
This is designed to print one number every second for five seconds, but if you run it as it is now (depending on your default system buffering) you may not see any output until the script completes, and then all at...
How to vertically center content with variable height within a div?
... <div class="valign-inner">
Excuse me. What did you sleep in your clothes again last night. Really. You're gonna be in the car with her. Hey, not too early I sleep in on Saturday. Oh, McFly, your shoe's untied. Don't be so gullible, McFly. You got the place fixed up nice, McFl...
What does `kill -0 $pid` in a shell script do?
...Kill the process if it exists and accepts signals from
# the current user.
sleep 60 &
pid=$!
kill -0 $pid && kill $pid
# Check if a PID exists. When missing, this should result
# in output similar to:
# bash: kill: (6228) - No such process
# Exit status: 1
kill -0 $pid; echo "Exit...
UITableView load more when scrolling to bottom like Facebook application
... {
DispatchQueue.global(qos: .utility).async {
sleep(3)
DispatchQueue.main.async { [weak self] in
self?.activityIndicator.stop()
}
}
}
}
}
Full Sample
Do not forget to paste the solution cod...
总结const_cast、static_cast、dynamic_cast、reinterpret_cast - C/C++ - ...
...
上面三个类a是基类，b继承a，c和ab没有关系。
有一个函数void function(a&a);
现在有一个对象是b的实例b，一个c的实例c。
function(static_cast<a&>(b)可以通过而function(static<a&>(c))不能通过编译，因为在编译的时候编译器已经知道c和a...
Example for boost shared_mutex (multiple reads/one write)?
... unique lock
cout << "11" << endl;
boost::this_thread::sleep(boost::posix_time::seconds(1));
lock2.unlock();
}
void main() {
cout << "1" << endl;
SharedLock lock1(tempLock); // (1) aquire a shared lock
cout << "2" << endl;
boost::threa...