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Automatically expanding an R factor into a collection of 1/0 indicator variables for every factor le

...epth of knowledge in matrix algebra and model formulation). After digging more, I've been able to gather that the -1 is just specifying not to include the "intercept" column. If you leave out the -1, you'll see an intercept column of 1's in the output with one binary column left out. You're able ...
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How to lock compiled Java classes to prevent decompilation?

... Some of the more advanced Java bytecode obfuscators do much more than just class name mangling. Zelix KlassMaster, for example, can also scramble your code flow in a way that makes it really hard to follow and works as an excellent code ...
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Change default app.config at runtime

...nfiguration system is used the first time. After that, it doesn't work any more. The reason: There exists a class ClientConfigPaths that caches the paths. So, even after changing the path with SetData, it is not re-read, because there already exist cached values. The solution is to remove these, too...
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adb not finding my device / phone (MacOS X)

...he top left corner of the screen, select "About this Mac", then click the "More Info..." button. Screen grab here: Expand the "Hardware" tree, select "USB", then look for your target device. In the above example, my device is named "SomeDevice" (I did that in photoshop to hide the real device ma...
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UIPanGestureRecognizer - Only vertical or horizontal

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How to tell if JRE or JDK is installed

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Why not abstract fields?

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How can I convert a datetime object to milliseconds since epoch (unix time) in Python?

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Postgres manually alter sequence

...ber provided, or 21. By default, setval will behave as if true was chosen. More details: postgresql.org/docs/9.6/static/functions-sequence.html – Tom Mertz Nov 7 '17 at 20:11 ...
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Tab key == 4 spaces and auto-indent after curly braces in Vim

... set expandtab The help files take a bit of time to get used to, but the more you read, the better Vim gets: :help smartindent Even better, you can embed these settings in your source for portability: :help auto-setting To see your current settings: :set all As graywh points out in the co...