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What's the difference between nohup and ampersand
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nohup catches the hangup signal (see man 7 signal) while the ampersand doesn't (except the shell is confgured that way or doesn't send SIGHUP at all).
Normally, when running a command using & and exiting the shell afterwards, the shell will terminate the sub-command with the hangup sign...
WARN Could not determine content-length of response body. Set content-length of the response or set
I just upgraded to rails 3.2.2, and now on rails s, page load, I get all these errors in the log:
3 Answers
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The application may be doing too much work on its main thread
I am new to Android SDK/API environment. It's the first I am trying to draw a plot/chart. I tried running different kinds of sample codes the emulator using 3 different free libraries, nothing is showing in the layout screen. The logcat is repeating the following message:
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Get array of object's keys
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And what about mobile browsers ?
– Marwen Trabelsi
Aug 7 '14 at 8:15
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jQuery UI - Close Dialog When Clicked Outside
... I read in another place about filtering based in the event, and that solved the problem: groups.google.com/group/jquery-ui/msg/a880d99138e1e80d
– Sonny
Mar 31 '10 at 17:08
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Clearing intent
My Android app is getting called by an intent that is passing information (pendingintent in statusbar).
20 Answers
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How to sum all column values in multi-dimensional array?
...ing array_column() then at first you may consider to get all unique keys , and then get the sum for each key :
$final = array();
foreach($input as $value)
$final = array_merge($final, $value);
foreach($final as $key => &$value)
$value = array_sum(array_column($input, $key));
unset...
Find nearest latitude/longitude with an SQL query
I have latitude and longitude and I want to pull the record from the database, which has nearest latitude and longitude by the distance, if that distance gets longer than specified one, then don't retrieve it.
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How do I make a transparent border with CSS?
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Well it worked on ie8, Mozilla, Opera and Chrome, good enough for me, I didn't try it out on Safari but I don't mind safari much. thanks a lot!
– William Calleja
Mar 24 '10 at 10:36
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In log4j, does checking isDebugEnabled before logging improve performance?
...e when it involves invocation of the toString() methods of various objects and concatenating the results.
In the given example, the log message is a constant string, so letting the logger discard it is just as efficient as checking whether the logger is enabled, and it lowers the complexity of the ...