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How to count the number of set bits in a 32-bit integer?
...33333) + ((i >> 2) & 0x33333333);
return (((i + (i >> 4)) & 0x0F0F0F0F) * 0x01010101) >> 24;
}
For JavaScript: coerce to integer with |0 for performance: change the first line to i = (i|0) - ((i >> 1) & 0x55555555);
This has the best worst-case behaviour of ...
Default argument values in JavaScript functions [duplicate]
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Ravan ScafiRavan Scafi
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Possible to do a MySQL foreign key to one of two possible tables?
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Bill KarwinBill Karwin
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Why is unsigned integer overflow defined behavior but signed integer overflow isn't?
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Pascal CuoqPascal Cuoq
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Why is XOR the default way to combine hashes?
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edited May 4 '11 at 20:13
answered May 4 '11 at 20:09
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C++, What does the colon after a constructor mean? [duplicate]
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SmasherySmashery
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What are the benefits to marking a field as `readonly` in C#?
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Read whole ASCII file into C++ std::string [duplicate]
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540
Update: Turns out that this method, while following STL idioms well, is actually surprisingly i...
What is the tilde (~) in the enum definition?
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edited Mar 29 '13 at 14:35
Anoop Vaidya
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