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Fastest way to find second (third…) highest/lowest value in vector or column

... follow | edited Sep 18 '19 at 21:10 Daniel Bourguet 2633 bronze badges answered Nov 4 '...
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How to save a plot as image on the disk?

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How to represent empty char in Java Character class

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Input with display:block is not a block, why not?

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Using ls to list directories and their total sizes

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How do you 'redo' changes after 'undo' with Emacs?

... Short version: by undoing the undo. If you undo, and then do a non-editing command such as C-f, then the next undo will undo the undo, resulting in a redo. Longer version: You can think of undo as operating on a stack of operations. If you perform some command (even a navigation command su...
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Remove directory from remote repository after adding them to .gitignore

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How do I create a variable number of variables?

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Calculating days between two dates with Java

....MILLISECONDS)); } catch (ParseException e) { e.printStackTrace(); } EDIT: Since there have been some discussions regarding the correctness of this code: it does indeed take care of leap years. However, the TimeUnit.DAYS.convert function loses precision since milliseconds are converted to days...
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Error 1046 No database Selected, how to resolve?

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