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Principal component analysis in Python
I'd like to use principal component analysis (PCA) for dimensionality reduction. Does numpy or scipy already have it, or do I have to roll my own using numpy.linalg.eigh ?
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How do I fix the Visual Studio compile error, “mismatch between processor architecture”?
I'm new to project configuration in Visual Studio 2010, but I've done some research and still can't quite figure this issue out. I have a Visual Studio solution with a C++ DLL referencing the C# DLL. The C# DLL references a few other DLLs, some within my project and some external. When I try to co...
Is explicitly closing files important?
...rely on the Python garbage-collection to close all files? For example, if one does this:
6 Answers
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How do I install Python OpenCV through Conda?
...s works also for Windows 10, and likely Python 3.x too).
NOTE 1: as mentioned mentioned by @great_raisin (thank you) in comment section however, this solution appears to also work for Windows 10.
NOTE 2: this will probably work for Anaconda/Python 3.x too. If you are using Windows 10 and Anaconda/...
What is the size of ActionBar in pixels?
...e will resolve to 0 size on pre-3.0 devices. So when using ActionBarCompat one would stick to android.support.v7.appcompat.R.attr.actionBarSize instead.
– Drew
Jul 8 '14 at 9:55
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Always pass weak reference of self into block in ARC?
...:obj];
}];
The block retains self, but self doesn't retain the block. If one or the other is released, no cycle is created and everything gets deallocated as it should.
Where you get into trouble is something like:
//In the interface:
@property (strong) void(^myBlock)(id obj, NSUInteger idx, BOO...
Rethrowing exceptions in Java without losing the stack trace
.... Not so if I replace it with the broader Exception e. How should this be done properly?
– James P.
Oct 31 '11 at 2:07
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How can I round down a number in Javascript?
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Using Math.floor() is one way of doing this.
More information: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/floor
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Converting a date string to a DateTime object using Joda Time library
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Hi, is it possible that the formatter doesn't accept timezones? "zz" returns "MEZ", when applying the toString function, but I cannot parse from it: Invalid format: "31. Januar 2013 06:38:08 MEZ" is malformed at "MEZ". Is this a known issue? How can I avoid it? Regards.
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Generic Repository With EF 4.1 what is the point
...to Linq-to-entities query you are defining logic outside of the mocked component with side effects which cannot be tested with unit tests.
– Ladislav Mrnka
Aug 18 '11 at 9:20
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