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Remove an item from a dictionary when its key is unknown

... 92 Be aware that you're currently testing for object identity (is only returns True if both operand...
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How to replace a hash key with another key

... 720 hash[:new_key] = hash.delete :old_key ...
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How do write IF ELSE statement in a MySQL query

...ably want to use a CASE expression. They look like this: SELECT col1, col2, (case when (action = 2 and state = 0) THEN 1 ELSE 0 END) as state from tbl1; share | improve this an...
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How to add a border just on the top side of a UIView

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How to check if a variable is an integer in JavaScript?

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How does the Brainfuck Hello World actually work?

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Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?

... 216 sqrtss gives a correctly rounded result. rsqrtss gives an approximation to the reciprocal, ac...
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Expand a random range from 1–5 to 1–7

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Rails I18n validation deprecation warning

I just updated to rails 4.0.2 and I'm getting this warning: 5 Answers 5 ...
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How would you implement an LRU cache in Java?

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