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Reshape three column data frame to matrix (“long” to “wide” format) [duplicate]

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Retain cycle on `self` with blocks

...tained id bself = self; – caleb Apr 27 '12 at 16:47 4 @JKLaiho: Sure, __weak is fine as well. If ...
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Is there a performance difference between CTE , Sub-Query, Temporary Table or Table Variable?

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How to round the corners of a button

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Git Symlinks in Windows

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Android screen size HDPI, LDPI, MDPI [duplicate]

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Calling Python in Java?

... jvm.dll in your path when launching the application) As well as the python27.lib or whatever and the boost_python-vc100-mt-1_55.lib. Then include Python/include, jdk/include, boost and only use shared libraries (dlls) otherwise boost has a teary. And yeah full on I know. There are so many ways in w...
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Is there a simple, elegant way to define singletons? [duplicate]

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How to find the .NET framework version of a Visual Studio project?

...t is the difference? – caduceus Nov 27 '19 at 9:49 add a comment  |  ...
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Is there a method to generate a UUID with go language

...andom. – Xeoncross Apr 21 '17 at 21:27 2 good answer; I've expanded it at stackoverflow.com/a/481...