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Adding elements to object
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answered Jan 9 '13 at 11:56
Konstantin DinevKonstantin Dinev
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Most efficient way to reverse a numpy array
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answered Jul 21 '11 at 5:25
stevehasteveha
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Remove first element from $@ in bash [duplicate]
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AmberAmber
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9
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Sequence-zip function for c++11?
...he same (it may crash or iterate beyond the end).
Starting from Boost 1.56.0 (2014 Aug 7) you could use boost::combine (the function exists in earlier versions but undocumented):
#include <boost/range/combine.hpp>
#include <vector>
#include <list>
#include <string>
int m...
What is the proper declaration of main?
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5 Answers
5
Active
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Iterating over every two elements in a list
...mport izip
def pairwise(iterable):
"s -> (s0, s1), (s2, s3), (s4, s5), ..."
a = iter(iterable)
return izip(a, a)
for x, y in pairwise(l):
print "%d + %d = %d" % (x, y, x + y)
Or, more generally:
from itertools import izip
def grouped(iterable, n):
"s -> (s0,s1,s2,...sn...
What is Ember RunLoop and how does it work?
...: https://machty.s3.amazonaws.com/ember-run-loop-visual/index.html
Update 5/9/2013: all the basic concepts below are still up to date, but as of this commit, the Ember Run Loop implementation has been split off into a separate library called backburner.js, with some very minor API differences.
Fir...
Is there a way to do repetitive tasks at intervals?
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245
The function time.NewTicker makes a channel that sends a periodic message, and provides a way to...
How to generate random SHA1 hash to use as ID in node.js?
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Gabi PurcaruGabi Purcaru
27.5k88 gold badges6767 silver badges8787 bronze badges
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boost::flat_map and its performance compared to map and unordered_map
... plus the fact that the asymptotic complexity can start to be felt.
Point 5 is about compilers being able to elide stuff that are empty or trivial at compile time. This can optimize greatly some operations, because the containers are templated, therefore each type will have its own performance prof...