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When is std::weak_ptr useful?
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Similar comment with queues: say you have objects and you queue them for some resource, objects could be deleted while waiting. So, if you queue weak_ptrs you do not have to bother with deleting entries from there queue. Weak_ptrs will be invalid...
Task continuation on UI thread
...nizationContext not put the continuation task into the main thread message queue in just the same way as the dispatcher?
– Dean
Sep 22 '14 at 4:37
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Stop handler.postDelayed()
...I level 1 Remove any pending posts of Runnable r that are
in the message queue.
public final void removeCallbacks (Runnable r, Object token)
Edit:
Change this:
@Override
public void onClick(View v) {
Handler handler = new Handler();
Runnable myRunnable = new Runnable() {
To:
@...
Set a path variable with spaces in the path in a Windows .cmd file or batch file
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I have a Batch file which gets parameters. Using set LALA=%~1was what worked for me.
– JCH2k
Feb 23 '15 at 13:13
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Escape angle brackets in a Windows command prompt
...quences.
You could use variables with delayed expansion. Below is a small batch script demonstration
@echo off
setlocal enableDelayedExpansion
set "line=<html>"
echo !line!
Or you could use a FOR /F loop. From the command line:
for /f "delims=" %A in ("<html>") do @echo %~A
Or fro...
Android - Setting a Timeout for an AsyncTask?
I have an AsyncTask class that I execute that downloads a big list of data from a website.
7 Answers
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Stop and Start a service via batch or cmd file?
...and not after the action is complete. If you want to restart a service via batch file (stop then start), the stop returns immediately, the start then fails because the service isn't stopped. Net stop/start returns after the action is complete, so doesn't have this problem.
– Do...
How to fire AJAX request Periodically?
...schedule the next one.
$('.result').html(data);
setTimeout(worker, 5000);
});
})();
For simplicity I used the success callback for scheduling. The down side of this is one failed request will stop updates. To avoid this you could use the complete callback instead:
(function worker() {
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How to remove multiple indexes from a list at the same time? [duplicate]
...nt on performance for the different ways so I performed a test on removing 5000 items from 50000 in all 3 generally different approaches, and for me numpy was the winner (if you have elements that fit in numpy):
7.5 sec for the enumerated list comprehension [4.5 sec on another PC]
0.08 sec for del...
Multiprocessing vs Threading Python [duplicate]
...s frequent share of objects among processes (e.g., through multiprocessing.Queue), what's the performance comparison to the in-process queue?
– KFL
Oct 21 '12 at 23:48
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