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Numbering rows within groups in a data frame
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answered Oct 16 '12 at 23:41
mnelmnel
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The modulo operation on negative numbers in Python
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Unlike C or C++, Python's modulo operator (%) always return a number having the same sign as th...
Why is it slower to iterate over a small string than a small list?
...n a list of small single character strings. Any explanation? It's almost 1.35 times as much time.
3 Answers
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How can I split a string into segments of n characters?
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var str = 'abcdefghijkl';
console.log(str.match(/.{1,3}/g));
Note: Use {1,3} inste...
Java: how can I split an ArrayList in multiple small ArrayLists?
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332
You can use subList(int fromIndex, int toIndex) to get a view of a portion of the original lis...
Installing Python 3 on RHEL
I'm trying to install python3 on RHEL using the following steps:
19 Answers
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How do I extract a sub-hash from a hash?
...azlerGazler
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Difference between del, remove and pop on lists
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The effects of the three different methods to remove an element from a list:
remove removes the ...
How do I shuffle an array in Swift?
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This answer details how to shuffle with a fast and uniform algorithm (Fisher-Yates) in Swift 4....