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How to check BLAS/LAPACK linkage in NumPy and SciPy?

I am builing my numpy/scipy environment based on blas and lapack more or less based on this walk through. 5 Answers ...
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Designing function f(f(n)) == -n

A question I got on my last interview: 118 Answers 118 ...
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CSS: bolding some text without changing its container's size

I have a horizontal navigation menu, which is basically just a <ul> with the elements set side-by-side. I do not define width, but simply use padding, because I would like the widths to be defined by the width of the menu item. I bold the currently-selected item. ...
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What's the best practice to round a float to 2 decimals? [duplicate]

I'm using eclipse + Android SDK. 7 Answers 7 ...
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Replace all non Alpha Numeric characters, New Lines, and multiple White Space with one Space

I'm looking for a neat RegEx solution to replace 8 Answers 8 ...
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Two color borders

Client wants two color borders for an embossed look. Can I do this on one element? I was hoping to avoid stacking two DOM elements with individual borders. ...
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std::vector performance regression when enabling C++11

I have found an interesting performance regression in a small C++ snippet, when I enable C++11: 1 Answer ...
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How can I convert a Unix timestamp to DateTime and vice versa?

There is this example code, but then it starts talking about millisecond / nanosecond problems. 19 Answers ...
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How can I quickly sum all numbers in a file?

I have a file which contains several thousand numbers, each on it's own line: 33 Answers ...
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How to draw a rounded Rectangle on HTML Canvas?

I found that there are only can fill rectangle, but no rounded corner one, how can I do that? 12 Answers ...