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Difference between setUp() and setUpBeforeClass()

When unit testing with JUnit, there are two similar methods, setUp() and setUpBeforeClass() . What is the difference between these methods? Also, what is the difference between tearDown() and tearDownAfterClass() ? ...
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Convert to binary and keep leading zeros in Python

...Specification mini language. The # makes the format include the 0b prefix, and the 010 size formats the output to fit in 10 characters width, with 0 padding; 2 characters for the 0b prefix, the other 8 for the binary digits. This is the most compact and direct option. If you are putting the result...
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How to work with complex numbers in C?

...t doesn't give me much information about how to use it. How to access real and imaginary parts in an efficient way? Is there native functions to get module and phase? ...
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How can I get Visual Studio 2008 Windows Forms designer to render a Form that implements an abstract

I engaged a problem with inherited Controls in Windows Forms and need some advice on it. 10 Answers ...
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How can I remove the search bar and footer added by the jQuery DataTables plugin?

... As good as @antpaw comment is, and seems to work in most cases, it doesn't work if there is filtering going on for each column, like in this example :datatables.net/release-datatables/extras/FixedColumns/… . Be aware! – Janis Peisen...
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FixedThreadPool vs CachedThreadPool: the lesser of two evils

...similar question suggested they were better suited for longer lived tasks and with my very limited knowledge of multithreading, I considered the average life of the threads (several minutes) " long lived ". ...
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How to use a variable to specify column name in ggplot

I have a ggplot command 6 Answers 6 ...
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How can I convert a dictionary into a list of tuples?

...ew" into the dictionary items. See the What's New document for Python 3.0, and the new documentation on views. 1: Insertion-order preservation for dicts was added in Python 3.7 share | improve this...
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What is the $? (dollar question mark) variable in shell scripting? [duplicate]

I'm trying to learn shell scripting, and I need to understand someone else's code. What is the $? variable hold? I can't Google search the answer because they block punctuation characters. ...
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Showing the same file in both columns of a Sublime Text window

... -> New View Into File. You can then drag the new tab to the other pane and view the file twice. There are several ways to create a new pane. As described in other answers, on Linux and Windows, you can use AltShift2 (Option ⌥Command ⌘2 on OS X), which corresponds to View → Layout → Colu...