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Why is the standard session lifetime 24 minutes (1440 seconds)?

I've been doing some research on PHP Session Handling and came across the session.gc_maxlifetime value of 1440 seconds. I've been wondering why the standard value is 1440 and how it is calculated? What is the basis for this calculation? ...
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Remove redundant paths from $PATH variable

...d it to any .bashrc, bash.bashrc, /etc/profile - whatever fits your system and user needs. Note: This is for Linux. We'll make this clear for new coders. (` , ') Don't try to SET = these. share | i...
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Setting Vim whitespace preferences by filetype

... there are many ways, but here's a simple, easy to understand way. add these lines to your ~/.vimrc: autocmd FileType html setlocal ts=2 sts=2 sw=2 autocmd FileType ruby setlocal ts=2 sts=2 sw=2 autocmd FileType javascript setlocal ts=4 sts=4 sw=4 ...
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How to manually create icns files using iconutil?

...: Use iconutil to Create an icns File Manually The iconutil command-line tool converts iconset folders to deployment-ready, high-resolution icns files. (You can find complete documentation for this tool by entering man iconutil in Terminal.) Using this tool also compresses the resulting i...
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How to Deal with Temporary NSManagedObject instances?

I need to create NSManagedObject instances, do some stuff with them and then trash them or store to sqlite db. The problem is, I cannot create instances of NSManagedObject unconnected to NSManagedObjectContext and this means I have to clear up somehow after I decide that I don't need some of ...
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Human readable javascripts in chrome developer tools

...t javascripts into human readable form ? Some kind of beautifier would be handy. Let say that I'm using some JS library and I need to instantiate its object, so that I should know what to put into constructor. But searching through this huge library that has 4 lines in the Chrome Developer Tools use...
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how to pass an integer as ConverterParameter?

...ton> The trick is to include the namespace for the basic system types and then to write at least the ConverterParameter binding in element form. share | improve this answer | ...
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Opacity of background-color, but not the text [duplicate]

.../css-background-transparency-without-affecting-child-elements-through-rgba-and-filters/ share | improve this answer | follow | ...
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Override ActiveRecord attribute methods

...that the original poster specified (feeding the name to super) works fine, and IMHO is cleaner than manually writing the attribute as Aaron suggests. – Batkins Nov 23 '11 at 20:46 ...
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Eclipse's Ctrl+click in Visual Studio?

...for a few days with Eclipse Java I totally got addicted to pressing Ctrl and clicking on an identifier to go to its definition. Since then I've been looking for a way to achieve this in Visual Studio as well. ...