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How to initialize an array in one step using Ruby?
... the other answers above, note also that you can use enumerators in Ruby 1.8.7+ to create arrays; for example:
array = 1.step(17,3).to_a
#=> [1, 4, 7, 10, 13, 16]
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Override Python's 'in' operator?
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edited Sep 18 '15 at 8:08
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How to un-escape a backslash-escaped string?
... ChristopheDChristopheD
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Is it possible to have multiple statements in a python lambda expression?
...d in the heapq module.
>>> import heapq
>>> l = [5,2,6,8,3,5]
>>> heapq.nsmallest(l, 2)
[2, 3]
So just use:
map(lambda x: heapq.nsmallest(x,2)[1], list_of_lists)
It's also usually considered clearer to use a list comprehension, which avoids the lambda altogether:
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What is sys.maxint in Python 3?
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The sys.maxint constant was removed, since there is no longer a limit
to the value of inte...
What does the 'b' character do in front of a string literal?
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8 Answers
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what is the function of webpages:Enabled in MVC 3 web.config
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edited Dec 8 '11 at 5:47
answered Feb 3 '11 at 12:27
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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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Append column to pandas dataframe
...t of NaNs rows.
– Israel Varea
Jun 18 '19 at 10:21
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