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What makes JNI calls slow?

...omething that can take tens of nanoseconds. For trivial native methods, in 2010 I measured calls at an average 40 ns on my Windows desktop, and 11 ns on my Mac desktop. Unless you're making many calls, you're not going to notice. That said, calling a native method can be slower than making a normal...
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How to print instances of a class using print()?

... answered Oct 8 '09 at 2:39 Chris LutzChris Lutz 63.9k1515 gold badges117117 silver badges176176 bronze badges ...
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Comment out text in R Markdown (Rmd file)

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Can someone copyright a SQL query? [closed]

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Is it considered acceptable to not call Dispose() on a TPL Task object?

...ikely better to rely on finalization to take care of things. Update (Oct 2012) Stephen Toub has posted a blog titled Do I need to dispose of Tasks? which gives some more detail, and explains the improvements in .Net 4.5. In summary: You don't need to dispose of Task objects 99% of the time. Ther...
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Using smart pointers for class members

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jQuery UI “ $(”#datepicker“).datepicker is not a function”

... 211 I struggled with a similar problem for hours. It then turned out that jQuery was included twic...
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How do I run all Python unit tests in a directory?

... With Python 2.7 and higher you don't have to write new code or use third-party tools to do this; recursive test execution via the command line is built-in. Put an __init__.py in your test directory and: python -m unittest discover <...
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Does a UNIQUE constraint automatically create an INDEX on the field(s)?

...| edited Dec 16 '19 at 16:23 informatik01 14.7k88 gold badges6666 silver badges100100 bronze badges answ...
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Accessing dict_keys element by index in Python3

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