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In log4j, does checking isDebugEnabled before logging improve performance?

...slf4j – Bill Michell Jun 8 '09 at 9:06 This is also the approach of java.util.Logging. – Paul ...
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Async image loading from url inside a UITableView cell - image changes to wrong image while scrollin

...me? – Mark Bridges May 12 '17 at 10:06 @MarkBridges, No. Actually I am calling tableView's cellForRowAtIndexPath metho...
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When to use EntityManager.find() vs EntityManager.getReference() with JPA

... answered Oct 22 '09 at 17:06 Arthur RonaldArthur Ronald 30.8k1717 gold badges104104 silver badges135135 bronze badges ...
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Expand a random range from 1–5 to 1–7

...amental limit, then, is that we can do no better than log(7)/log(5) = 1.20906 calls to rand5() per call to rand7(). Side notes: all logarithms in this answer will be base 2 unless specified otherwise. rand5() will be assumed to return numbers in the range [0, 4], and rand7() will be assumed to ret...
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Secure random token in Node.js

... phoenix2010phoenix2010 2,60611 gold badge99 silver badges99 bronze badges ...
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What are unit tests, integration tests, smoke tests, and regression tests?

... 106 Unit test: an automatic test to test the internal workings of a class. It should be a stand-al...
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Database sharding vs partitioning

... – Jonathan Hartley Mar 13 '14 at 20:06 add a comment  |  ...
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How can I tell jackson to ignore a property for which I don't have control over the source code?

...sh YarlagaddaSireesh Yarlagadda 9,85622 gold badges6060 silver badges6868 bronze badges add a comment ...
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String, StringBuffer, and StringBuilder

...r sure. – user177800 Jun 4 '10 at 4:06 ...
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Does a `+` in a URL scheme/host/path represent a space?

... answered Jun 17 '09 at 8:06 Niels R.Niels R. 6,39944 gold badges2626 silver badges4343 bronze badges ...