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Why is processing a sorted array faster than processing an unsorted array?
...sum += data[c];
Notice that the data is evenly distributed between 0 and 255. When the data is sorted, roughly the first half of the iterations will not enter the if-statement. After that, they will all enter the if-statement.
This is very friendly to the branch predictor since the branch consecuti...
How to merge lists into a list of tuples?
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In Python 2:
>>> list_a = [1, 2, 3, 4]
>>> list_b = [5, 6, 7, 8]
>>> zip(list_a, list_b)
[(1, 5), (2, 6), (3, 7), (4, 8)]
In Python 3:
>>> list_a = [1, 2, 3, 4]
>>> list_b = [5, 6, 7, 8]
>>> list(zip(list_a, list_b))
[(1, 5), (2, 6), (3, 7...
Resize image in PHP
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Joe
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answered Feb 1 '13 at 15:33
Ian AtkinIan Atkin
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How to get pixel data from a UIImage (Cocoa Touch) or CGImage (Core Graphics)?
... ++i)
{
CGFloat alpha = ((CGFloat) rawData[byteIndex + 3] ) / 255.0f;
CGFloat red = ((CGFloat) rawData[byteIndex] ) / alpha;
CGFloat green = ((CGFloat) rawData[byteIndex + 1] ) / alpha;
CGFloat blue = ((CGFloat) rawData[byteIndex + 2] ) / alpha;
byt...
How to use background thread in swift?
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answered Jul 31 '14 at 23:15
tobiasdmtobiasdm
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Getting SyntaxError for print with keyword argument end=' '
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Are you sure you are using Python 3.x? The syntax isn't available in Python 2.x because print i...
How to get current language code with Swift?
...17
Miki
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answered Oct 12 '16 at 5:47
Vadim Motorine...
How to add a line break in C# .NET documentation
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Throttling method calls to M requests in N seconds
...ael BorgwardtMichael Borgwardt
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How to identify numpy types in python?
...ertabarnert
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