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Performance of foreach, array_map with lambda and array_map with static function
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How do I loop through a date range?
...very third day starting with the "start" date, you could just call AddDays(3) in the loop instead of AddDays(1).
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Appending an element to the end of a list in Scala
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List(1,2,3) :+ 4
Results in List[Int] = List(1, 2, 3, 4)
Note that this operation has a complexity of O(n). If you need this operation frequently, or for long lists, consider using another data type (e.g. a ListBuffer).
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In which language are the Java compiler and JVM written?
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edited Aug 3 '09 at 12:26
answered Aug 3 '09 at 6:47
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Python creating a dictionary of lists
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>>> d
defaultdict(<type 'list'>, {1: ['1'], 2: ['1', '2'], 3: ['2']})
>>> d.items()
[(1, ['1']), (2, ['1', '2']), (3, ['2'])]
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Safe String to BigDecimal conversion
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edited Mar 12 '18 at 23:13
Bax
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How to concatenate strings with padding in sqlite
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Adding new column to existing DataFrame in Python pandas
... a b c d
6 -0.269221 -0.026476 0.997517 1.294385
8 0.917438 0.847941 0.034235 -0.448948
>>> df1['e'] = pd.Series(np.random.randn(sLength), index=df1.index)
>>> df1
a b c d e
6 -0.269221 -0.026476 0.997517 ...
How to deep copy a list?
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E0_copy is not a deep copy. You don't make a deep copy using list() (Both list(...) and testLis...