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Create an array with same element repeated multiple times

... | edited Jun 5 '15 at 16:11 answered Sep 19 '12 at 21:34 ...
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Tricky Google interview question

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How to get a specific output iterating a hash in Ruby?

...uts "#{key}-----" puts array end Regarding order I should add, that in 1.8 the items will be iterated in random order (well, actually in an order defined by Fixnum's hashing function), while in 1.9 it will be iterated in the order of the literal. ...
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Merge/flatten an array of arrays

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How to pip install a package with min and max version range?

... 321 You can do: $ pip install "package>=0.2,<0.3" And pip will look for the best match, ass...
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numpy: most efficient frequency counts for unique values in an array

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What does the ^ operator do in Java?

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Obfuscated C Code Contest 2006. Please explain sykes2.c

... 1824 Let's de-obfuscate it. Indenting: main(_) { _^448 && main(-~_); putchar(--_...
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how do I insert a column at a specific column index in pandas?

... the beginning df.insert(loc, column, value) df = pd.DataFrame({'B': [1, 2, 3], 'C': [4, 5, 6]}) df Out: B C 0 1 4 1 2 5 2 3 6 idx = 0 new_col = [7, 8, 9] # can be a list, a Series, an array or a scalar df.insert(loc=idx, column='A', value=new_col) df Out: A B C 0 7 1 ...
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How to deal with SettingWithCopyWarning in Pandas?

I just upgraded my Pandas from 0.11 to 0.13.0rc1. Now, the application is popping out many new warnings. One of them like this: ...