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Extracting specific columns in numpy array
... cs95
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answered Dec 5 '11 at 14:24
Fred FooFred Foo
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How to sort a file, based on its numerical values for a field?
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Andrew WhiteAndrew White
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How do I get whole and fractional parts from double in JSP/Java?
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edited Nov 26 '19 at 14:48
Dan Is Fiddling By Firelight
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How to check if object (variable) is defined in R?
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460
You want exists():
R> exists("somethingUnknown")
[1] FALSE
R> somethingUnknown <- 42...
How to extract one column of a csv file
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answered Oct 26 '13 at 2:34
synthesizerpatelsynthesizerpatel
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Is there an equivalent for the Zip function in Clojure Core or Contrib?
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(map vector '(1 2 3) '(4 5 6))
does what you want:
=> ([1 4] [2 5] [3 6])
Haskell needs a collection of zipWith (zipWith3, zipWith4, ...) functions, because they all need to be of a specific type; in particular, the number of input lists th...
How do I declare a 2d array in C++ using new?
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How to round float numbers in javascript?
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answered Feb 26 '12 at 13:24
davindavin
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How to select where ID in Array Rails ActiveRecord without exception
...find_all_by_id(potentially_nonexistent_ids)
case as well.
Update: Rails 4
Comment.where(id: [2, 3, 5])
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Is there any pythonic way to combine two dicts (adding values for keys that appear in both)?
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842
Use collections.Counter:
>>> from collections import Counter
>>> A = Counter...