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Best way to find the intersection of multiple sets?
... use multiple arguments to set.intersection(), like
u = set.intersection(s1, s2, s3)
If the sets are in a list, this translates to:
u = set.intersection(*setlist)
where *a_list is list expansion
Note that set.intersection is not a static method, but this uses the functional notation to apply ...
Comma separator for numbers in R?
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135
You can try either format or prettyNum, but both functions return a vector of characters. I'd ...
Escape regex special characters in a Python string
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Nov 17 '10 at 8:13
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How to pip install a package with min and max version range?
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321
You can do:
$ pip install "package>=0.2,<0.3"
And pip will look for the best match, ass...
fork() branches more than expected?
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answered Jun 21 '12 at 6:58
wallykwallyk
52.3k1111 gold badges7373 silver badges130130 bronze badges
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How to avoid warning when introducing NAs by coercion
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142
Use suppressWarnings():
suppressWarnings(as.numeric(c("1", "2", "X")))
[1] 1 2 NA
This su...
Appropriate datatype for holding percent values?
What is the best datatype for holding percent values ranging from 0.00% to 100.00%?
5 Answers
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Search and Replace with RegEx components in Atom editor
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216
If you Cmd-F and open the search pane, there is a ".*" button at the right side. Click it and n...
What do you call the -> operator in Ruby?
... lambda defined using -> is called lambda literal.
succ = ->(x){ x+1 }
succ.call(2)
The code is equivalent to the following one.
succ = lambda { |x| x + 1 }
succ.call(2)
Informally, I have heard it being called stabby lambda or stabby literal.
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