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PHP - Extracting a property from an array of objects
...'return $o->id;'), $objects);
echo memory_get_usage() . "\n";
sleep(1);
}
// the output
4235616
4236600
4237560
4238520
...
GOOD
while (true)
{
$objects = array_map(function($o) { return $o->id; }, $objects);
echo memory_get_usage() . "\n";
sleep(1);
}
// the outpu...
deciding among subprocess, multiprocessing, and thread in Python?
....
To understand how this is possible one should read about the features of select() (which can be built around the select() or poll() or similar OS system calls).
Basically it's all driven by the ability to make a request of the OS to sleep pending any activity on a list of file descriptors or some ...
How do I watch a file for changes?
...rt time pub = Monkey() while True: try: time.sleep(1) pub.watch() except KeyboardInterrupt: print('\nDone') break except: print(f'Unhandled error: {sys.exc_info()[0]}') `
– Vlad Bezden...
How to run a Python script in the background even after I logout SSH?
...i in range(0,count):
print('parent pid: %d' % os.getppid())
time.sleep(1)
my_func(count=10)
#still in parent thread
time.sleep(2)
#after 2 seconds the function my_func lives on is own
You can of course replace the content of your bgservice.py file in place of my_func.
...
scheduleAtFixedRate vs scheduleWithFixedDelay
...
Try adding a Thread.sleep(1000); call within your run() method... Basically it's the difference between scheduling something based on when the previous execution ends and when it (logically) starts.
For example, suppose I schedule an alarm to g...
What's the Android ADB shell “dumpsys” tool and what are its benefits?
..._storag: 0% = 0% user + 0% kernel
pvr_workqueue: 0% = 0% user + 0% kernel
+sleep: 0% = 0% user + 0% kernel
+sleep: 0% = 0% user + 0% kernel
TOTAL: 6% = 1% user + 3% kernel + 0% irq
4)Getting memory usage informations
~$ adb shell dumpsys meminfo 'your apps package name'
Output:
** MEMINFO in p...
“Invalid signature file” when attempting to run a .jar
..."**/*.jar" />
</zipgroupfileset>
</jar>
<sleep seconds="1" />
<jar jarfile="${output.dir}/myjar.jar" basedir="${classes.dir}">
<zipfileset src="${output.dir}/deps.jar" excludes="META-INF/*.SF" />
<manifest>
<at...
How do I kill background processes / jobs when my shell script exits?
...rap_with_arg 'stop' EXIT SIGINT SIGTERM SIGHUP
{ i=0; while (( ++i )); do sleep 0.5 && echo "a: $i"; done } &
{ i=0; while (( ++i )); do sleep 0.6 && echo "b: $i"; done } &
while true; do read; done
UPD: added minimal example; improved stop function to aviod de-trapping u...
How to resolve “Waiting for Debugger” message?
... with the Android Emulator. I figured out that if you put your computer to sleep while Eclipse or the emulator are running, that messes up the connection between them. My problem went away after I restarted both, the emulator, and Eclipse.
– Vivek
May 14 '11 at...
delegate keyword vs. lambda notation
...erence
Example:
var mytask = Task.Factory.StartNew(() =>
{
Thread.Sleep(5000);
return 2712;
});
mytask.ContinueWith(delegate
{
_backgroundTask.ContinueTask(() =>lblPercent.Content = mytask.Result.ToString(CultureInfo.InvariantCulture));
});
And I replace with lambda:(error)
...