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Accessing class variables from a list comprehension in the class definition
...the class definition? The following works in Python 2 but fails in Python 3:
5 Answers
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Rename specific column(s) in pandas
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385
data.rename(columns={'gdp':'log(gdp)'}, inplace=True)
The rename show that it accepts a dict...
Cartesian product of x and y array points into single array of 2D points
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13 Answers
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Is there a common Java utility to break a list into batches?
...e, partitioning a list containing [a, b, c, d, e] with a partition size of 3 yields [[a, b, c], [d, e]] -- an outer list containing two inner lists of three and two elements, all in the original order.
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How to get the Power of some Integer in Swift language?
...(radix), Double(power)))
}
// ...
// Then you can do this...
let i = 2 ^^ 3
// ... or
println("2³ = \(2 ^^ 3)") // Prints 2³ = 8
I used two carets so you can still use the XOR operator.
Update for Swift 3
In Swift 3 the "magic number" precedence is replaced by precedencegroups:
precedencegro...
pandas read_csv and filter columns with usecols
...mport StringIO
csv = r"""dummy,date,loc,x
bar,20090101,a,1
bar,20090102,a,3
bar,20090103,a,5
bar,20090101,b,1
bar,20090102,b,3
bar,20090103,b,5"""
df = pd.read_csv(StringIO(csv),
header=0,
index_col=["date", "loc"],
usecols=["date", "loc", "x"],
parse_dates=["date"...
How do I shuffle an array in Swift?
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635
This answer details how to shuffle with a fast and uniform algorithm (Fisher-Yates) in Swift 4....
How to dismiss a Twitter Bootstrap popover by clicking outside?
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37 Answers
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How to check if type of a variable is string?
...d to test whether an object is an instance of str or unicode.
In Python 3.x, the correct test is
isinstance(s, str)
The bytes class isn't considered a string type in Python 3.
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Right to Left support for Twitter Bootstrap 3
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answered Nov 1 '13 at 16:11
Muhammad RedaMuhammad Reda
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