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Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
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216
sqrtss gives a correctly rounded result. rsqrtss gives an approximation to the reciprocal, ac...
Rails I18n validation deprecation warning
I just updated to rails 4.0.2 and I'm getting this warning:
5 Answers
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SQL WHERE condition is not equal to?
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You can do like this
DELETE FROM table WHERE id NOT IN ( 2 )
OR
DELETE FROM table WHERE id <> 2
As @Frank Schmitt noted, you might want to be careful about the NULL values too. If you want to delete everything which is not 2(including the NULLs) then add OR id IS NULL...
How to create enum like type in TypeScript?
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MrZebra
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answered Oct 2 '12 at 9:45
Steve LuccoSteve Lucc...
Can someone explain the traverse function in Haskell?
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121
traverse is the same as fmap, except that it also allows you to run effects while you're rebuil...
How to tag an older commit in Git?
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Example:
git tag -a v1.2 9fceb02 -m "Message here"
Where 9fceb02 is the beginning part of the commit id.
You can then push the tag using git push origin v1.2.
You can do git log to show all the commit id's in your current branch.
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Fastest way to flatten / un-flatten nested JSON objects
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+500
Here's...
How would you implement an LRU cache in Java?
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21 Answers
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JavaScript seconds to time string with format hh:mm:ss
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