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Splitting on first occurrence
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answered Aug 1 '11 at 19:48
Ignacio Vazquez-AbramsIgnacio Vazquez-Abrams
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How to reorder data.table columns (without copying)
... a b c
# [1,] 1 3 0.2880365
# [2,] 2 2 0.7785115
# [3,] 3 1 0.3297416
setcolorder(x, c("c", "b", "a"))
x
# c b a
# [1,] 0.2880365 3 1
# [2,] 0.7785115 2 2
# [3,] 0.3297416 1 3
From ?setcolorder:
In data.table parlance, all set* functions change their input by reference. T...
How to iterate for loop in reverse order in swift?
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14 Answers
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What does the star operator mean, in a function call?
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s = sum(1, 2, c=10, d=15)
Also see section 4.7.4 - Unpacking Argument Lists of the Python documentation.
Additionally you can define functions to take *x and **y arguments, this allows a function to accept any number of positional and/or named arguments that aren't...
How can I make pandas dataframe column headers all lowercase?
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answered Nov 1 '13 at 11:42
Roman PekarRoman Pekar
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How do you push a Git tag to a branch using a refspec?
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4 Answers
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Using comparison operators in Scala's pattern matching system
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4 Answers
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Cleanest and most Pythonic way to get tomorrow's date?
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4 Answers
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`levels
...tion, @Marek posted the following solution:
https://stackoverflow.com/a/10432263/636656
4 Answers
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Select multiple columns in data.table by their numeric indices
... Henrik
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answered Nov 14 '12 at 17:28
Josh O'BrienJosh O'Brien
144k2...