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How to kill a child process after a given timeout in Bash?
...ill not take the pid of the calling shell but the (first) subshell that is started by (). The (sleep... thing calls a second subshell within the first subshell to wait 10 secs in the background and kill the first subshell which, after having launched the killer subshell process, proceeds to execute ...
Create array of symbols
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The original answer was written back in September '11, but, starting from Ruby 2.0, there is a shorter way to create an array of symbols! This literal:
%i[address city state postal country]
will do exactly what you want.
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What does -XX:MaxPermSize do?
...is other Oracle documentation lists the other HotSpot arguments.
Update : Starting with Java 8, both the permgen space and this setting are gone. The memory model used for loaded classes and methods is different and isn't limited (with default settings). You should not see this error any more.
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Why use sprintf function in PHP?
...ll find plenty of examples. The wikipedia article on printf should get you started.
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Find kth smallest element in a binary search tree in Optimum way
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Given just a plain binary search tree, about all you can do is start from the smallest, and traverse upward to find the right node.
If you're going to do this very often, you can add an attribute to each node signifying how many nodes are in its left sub-tree. Using that, you can descen...
Get average color of image via Javascript
...ve generator is partially based on libpng sources and might provide a good starting point.)
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How to programmatically display version/build number of target in iOS app?
...e marketing release number is for the customers, called version number. It starts with 1.0 and goes up for major updates to 2.0, 3.0, for minor updates to 1.1, 1.2 and for bug fixes to 1.0.1, 1.0.2 . This number is oriented about releases and new features. It does not have to stop at 9, 1.11.23 is a...
Accessing JPEG EXIF rotation data in JavaScript on the client side
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Implemented on Chrome starting with 81 ???? It will take a while before people update their browser though - keep an eye on caniuse
– Robin Métral
Apr 9 at 12:10
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What does “The APR based Apache Tomcat Native library was not found” mean?
I am using Tomcat 7 in Eclipse on Windows. When starting Tomcat, I am getting the following info message:
12 Answers
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Best way to obfuscate an e-mail address on a website?
...ly easy to find. I have had 0 false negatives and 1 false positive since I started using it more than 14 months ago. I get several hundred spams a day in my spam folder.
– Rex M
Apr 14 '09 at 18:53
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