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Expression Versus Statement

...as one unit of execution, a thing that you did. The only reason it wasn't called a "line" was because sometimes it spanned multiple lines. An expression on its own couldn't do anything... you had to assign it to a variable. 1 + 2 / X is an error in FORTRAN, because it doesn't do anything. You had...
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Should I use scipy.pi, numpy.pi, or math.pi?

...gt;> math.pi == np.pi == scipy.pi True So it doesn't matter, they are all the same value. The only reason all three modules provide a pi value is so if you are using just one of the three modules, you can conveniently have access to pi without having to import another module. They're not provi...
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How to get the primary IP address of the local machine on Linux and OS X? [closed]

...... You can alias the command in your .bashrc to create your own command called myip for instance. alias myip="ifconfig | sed -En 's/127.0.0.1//;s/.*inet (addr:)?(([0-9]*\.){3}[0-9]*).*/\2/p'" A much simpler way is hostname -I (hostname -i for older versions of hostname but see comments). However...
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Setting Android Theme background color

... Okay turned out that I made a really silly mistake. The device I am using for testing is running Android 4.0.4, API level 15. The styles.xml file that I was editing is in the default values folder. I edited the styles.xml in values-v14 folder and it works ...
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How to recognize swipe in all 4 directions

...mask, but each recognizer can only handle one direction. You can send them all to the same handler if you want, and sort it out there, or send them to different handlers. Here's one implementation: override func viewDidLoad() { super.viewDidLoad() let swipeRight = UISwipeGestureRecognizer(...
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DLL and LIB files - what and why?

...program to run properly - libraries. But why do compilers generate them at all? Wouldn't it be easier to just include all the code in a single executable? And what's the difference between DLL's and LIB's? ...
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Removing cordova plugins from the project

Somehow in my app many of the cordova plugins are installed and because of that it requires access to almost everything - from my contacts to current location ( even though this app doesn't need this ). ...
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What is the difference between a .xib file and a .storyboard?

...ated .xib with it. Storyboard achieves two things: .storyboard is essentially one single file for all your screens in the app and it shows the flow of the screens. You can add segues/transitions between screens, this way. So, this minimizes the boilerplate code required to manage multiple screens....
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Is there a standard function to check for null, undefined, or blank variables in JavaScript?

...t undefined or null ? I've got this code, but I'm not sure if it covers all cases: 41 Answers ...
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Checkout subdirectories in Git?

...lace outside of the working copy) that I got used to just making lots of small single-purpose repositories. If you insist (or really need it), though, you could make a git repository with just mytheme and myplugins directories and symlink those from within the WordPress install. MDCore wrote: ...