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python pandas dataframe to dictionary

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std::vector performance regression when enabling C++11

...nteresting performance regression in a small C++ snippet, when I enable C++11: 1 Answer ...
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How do I create an average from a Ruby array?

... | edited May 10 '15 at 14:40 Joshua Pinter 34k1717 gold badges188188 silver badges208208 bronze badges ...
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Javascript shorthand ternary operator

... 179 var startingNumber = startingNumber || 1; Something like that what you're looking for, where...
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Regex to validate password strength

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What is more efficient? Using pow to square or just multiply it with itself?

...\ std::cout << elapsed << " "; \ \ return x; \ } TEST(1, b) TEST(2, b*b) TEST(3, b*b*b) TEST(4, b*b*b*b) TEST(5, b*b*b*b*b) template <int exponent> double testpow(double base, long loops) { double x = 0.0; boost::posix_time::ptime startTime = now(); for (long...
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Cluster analysis in R: determine the optimal number of clusters

... 1024 If your question is how can I determine how many clusters are appropriate for a kmeans analys...
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Repeat String - Javascript

...! String.prototype.repeat = function( num ) { return new Array( num + 1 ).join( this ); } alert( "string to repeat\n".repeat( 4 ) ); share | improve this answer | foll...
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What is the simplest SQL Query to find the second largest value?

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Draw a perfect circle from user's touch

... System.out.println("circle"); }else{ cD = -1; System.out.println("unknown"); } repaint(); } } @Override public void mouseDragged(MouseEvent e) { Point newPoint = e.getPoint(); if (editing &am...