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Thread pooling in C++11
...e some kind of concurrent data structure, and each thread would presumably sleep on some kind of condition variable, which would be notified when there's work to do. Upon receiving the notification, one or several of the threads wake up, recover a task from the concurrent data structure, process it,...
What's the difference between Invoke() and BeginInvoke()
...readStart)delegate()
{
myTextBox.Text = "bing";
Thread.Sleep(TimeSpan.FromSeconds(3));
});
MessageBox.Show("done");
}
If use BeginInvoke, MessageBox pops simultaneous to the text update. If use Invoke, MessageBox pops after the 3 second sleep. Hence, showing the effect of...
How can you diff two pipelines in Bash?
... this with e.g.:
comm -23 <(seq 100 | sort) <(seq 10 20 && sleep 5 && seq 20 30 | sort)
If this is an issue, you could try sd (stream diff), which doesn't require sorting (like comm does) nor process substitution like the above examples, is orders or magnitude faster than g...
Is there a Java equivalent to C#'s 'yield' keyword?
...ng");
}
}) {
System.out.println(" Consuming " + item);
Thread.sleep(200);
}
Or you can use lambda notation to cut down on boilerplate:
for (Integer item : new Producer<Integer>(/* queueSize = */ 5, producer -> {
for (int i = 0; i < 20; i++) {
System.out.printl...
Why should Java ThreadLocal variables be static
... try {
//all concurrent thread will wait for 3 seconds
Thread.sleep(3000l);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//Print the respective thread name along with "intValue" value and current user.
System.o...
What's the difference between a Future and a Promise?
...ier<Integer> momsPurse = ()-> {
try {
Thread.sleep(1000);//mom is busy
} catch (InterruptedException e) {
;
}
return 100;
};
ExecutorService ex = Executors.newFixedThreadPool(10);
CompletableFuture<Integer> promise =
...
How to get the return value from a thread in python?
...it as:
@threaded
def long_task(x):
import time
x = x + 5
time.sleep(5)
return x
# does not block, returns Thread object
y = long_task(10)
print y
# this blocks, waiting for the result
result = y.result_queue.get()
print result
The decorated function creates a new thread each tim...
绘画动画组件 · App Inventor 2 中文网
...
详细用法请参考《App Inventor 2 绘图之画布画弧(DrawArc)函数的用法》。
画圆(圆心x坐标,圆心y坐标,半径,填充)
在画布上以给定坐标为中心绘制一个具有给定半径的圆（填充参数指定是否填充）。
画直线(x1坐标,y1坐标,x2...
How to capture stdout output from a Python function call?
...e)
capturing.on_readline(on_read)
capturing.start()
print("hello 1")
time.sleep(1)
print("hello 2")
time.sleep(1)
print("hello 3")
capturing.stop()
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What is java interface equivalent in Ruby?
...
class Person
def work(one,two,three)
one + two + three
end
def sleep
end
interface({:work => 3, :sleep => 0})
end
Removing one of the methods declared on Person or change it number of arguments will raise a NotImplementedError.
...