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Project structure for Google App Engine

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Creating a UICollectionView programmatically

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Why doesn't Python have a sign function?

... EDIT: Indeed there was a patch which included sign() in math, but it wasn't accepted, because they didn't agree on what it should return in all the edge cases (+/-0, +/-nan, etc) So they decided to implement only copysign, ...
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Disable assertions in Python

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How do I run all Python unit tests in a directory?

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Is there a simple way to convert C++ enum to string?

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How can one use multi threading in PHP applications

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Elegant way to invert a map in Scala

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Replacing Spaces with Underscores

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The tilde operator in Python

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