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Splitting on first occurrence
...t most maxsplit splits are done (thus, the list will have at most maxsplit+1 elements).
s.split('mango', 1)[1]
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How to reorder data.table columns (without copying)
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185
Use setcolorder():
library(data.table)
x <- data.table(a = 1:3, b = 3:1, c = runif(3))
x
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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?
...arguments, so you can do this:
def sum(a, b):
return a + b
values = (1, 2)
s = sum(*values)
This will unpack the tuple so that it actually executes as:
s = sum(1, 2)
The double star ** does the same, only using a dictionary and thus named arguments:
values = { 'a': 1, 'b': 2 }
s = sum(*...
How can I make pandas dataframe column headers all lowercase?
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180
You can do it like this:
data.columns = map(str.lower, data.columns)
or
data.columns = [x....
How do you push a Git tag to a branch using a refspec?
I want to force push, for example, my tag 1.0.0 to my remote master branch.
4 Answers
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Using comparison operators in Scala's pattern matching system
...i.e. an if and a boolean expression after the pattern:
a match {
case 10 => println("ten")
case x if x > 10 => println("greater than ten")
case _ => println("less than ten")
}
Edit: Note that this is more than superficially different to putting an if after the =>, becau...
Cleanest and most Pythonic way to get tomorrow's date?
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datetime.date.today() + datetime.timedelta(days=1) should do the trick
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`levels
...estion, @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
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185
For versions of data.table >= 1.9.8, the following all just work:
library(data.table)
dt &...