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Scala: Nil vs List()

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How to get different colored lines for different plots in a single figure?

... 432 Matplotlib does this by default. E.g.: import matplotlib.pyplot as plt import numpy as np x ...
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Accessing dict_keys element by index in Python3

... Call list() on the dictionary instead: keys = list(test) In Python 3, the dict.keys() method returns a dictionary view object, which acts as a set. Iterating over the dictionary directly also yields keys, so turning a dictionary into a list results in a list of all the keys: >>> te...
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Pandas aggregate count distinct

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How to detect the currently pressed key?

... 163 if ((Control.ModifierKeys & Keys.Shift) != 0) This will also be true if Ctrl+Shift is dow...
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Failed to build gem native extension (installing Compass)

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Get value of dynamically chosen class constant in PHP

... Brad 140k3737 gold badges282282 silver badges452452 bronze badges answered May 27 '11 at 2:20 Dan SimonDan Sim...
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Listing all permutations of a string/integer

... I found the pseudocode on http://www.programmersheaven.com/mb/Algorithms/369713/369713/permutation-algorithm-help/: makePermutations(permutation) { if (length permutation < required length) { for (i = min digit to max digit) { if (i not in permutation) { makePermutations(per...
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Set width of a “Position: fixed” div relative to parent div

... answered May 3 '11 at 19:02 jeroenjeroen 87.4k2020 gold badges106106 silver badges128128 bronze badges ...
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Set value for particular cell in pandas DataFrame using index

...y df. In [18]: %timeit df.set_value('C', 'x', 10) 100000 loops, best of 3: 2.9 µs per loop In [20]: %timeit df['x']['C'] = 10 100000 loops, best of 3: 6.31 µs per loop In [81]: %timeit df.at['C', 'x'] = 10 100000 loops, best of 3: 9.2 µs per loop ...