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XPath query to get nth instance of an element
...L file (whose contents I do not control) that has several input elements all with the same fixed id attribute of "search_query" . The contents of the file can change, but I know that I always want to get the second input element with the id attribute "search_query" .
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What is “export default” in javascript?
...he default export can be imported without using braces. This answer is actually pretty wrong as it says you can only use default when there is only one export in a file, which is not true at all. You can have several exports in the same file, but of course only 1 of them can be set as the default on...
What is the best way to iterate over a dictionary?
... @OzairKafray using var when you don't know the type is generally bad practice.
– Nate
Jan 25 '16 at 23:34
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What exactly are “spin-locks”?
...ads on the same core. This has a performance penalty if the wait time is really short, because your thread now has to wait for a preemption to receive CPU time again.
Besides, kernel objects are not available in every state of the kernel, such as in an interrupt handler or when paging is not availab...
Mockito test a void method throws an exception
... a number of exceptions so I'd like to test those exceptions being thrown. All attempts have failed with the same reason:
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What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it?
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Your first port of call should be the documentation which explains it reasonably clearly:
Thrown to indicate that an array has been accessed with an illegal index. The index is either negative or greater than or equal to the size of the arra...
Thread vs ThreadPool
...rom the pool rather than one I've explicitly created? I'm thinking specifically of .NET here, but general examples are fine.
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Get just the filename from a path in a Bash script [duplicate]
... sets xpath (the file path), xpref (the file prefix, what you were specifically asking for) and xfext (the file extension).
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Can't create handler inside thread that has not called Looper.prepare()
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You're calling it from a worker thread. You need to call Toast.makeText() (and most other functions dealing with the UI) from within the main thread. You could use a handler, for example.
Look up Communicating with the UI Thread in ...
How to tell whether a point is to the right or left side of a line
... ( a and b ) and draw an imaginary line between them. Now I want to have all points that are left from this line in one set and those that are right from this line in the other set.
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