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Check if something is (not) in a list in Python
...lement is at the start of the list, in evaluates faster:
lst = list(range(10001))
%timeit 1 in lst
%timeit 10000 in lst # Expected to take longer time.
68.9 ns ± 0.613 ns per loop (mean ± std. dev. of 7 runs, 10000000 loops each)
178 µs ± 5.01 µs per loop (mean ± std. dev. of 7 runs, 10000 ...
Is it pythonic to import inside functions?
...available, the maximum module length would have to be one screen (probably 100 lines max). And that would probably be too short to be practical in most cases.
– codeape
Jun 22 '09 at 9:26
...
How can I pass a parameter to a setTimeout() callback?
...thClosure(topicId){ setTimeout(function() { postinsql(topicId); }, 1000) } setTimeOutFunction(topicId); topicId=13;
– Halis Yılboğa
Dec 23 '13 at 8:31
...
What is the difference between `sorted(list)` vs `list.sort()`?
...'s our setup:
import timeit
setup = """
import random
lists = [list(range(10000)) for _ in range(1000)] # list of lists
for l in lists:
random.shuffle(l) # shuffle each list
shuffled_iter = iter(lists) # wrap as iterator so next() yields one at a time
"""
And here's our results for a list of...
Remove non-utf8 characters from string
...][\x80-\xBF]{3} # quadruple-byte sequence 11110xxx 10xxxxxx * 3
){1,100} # ...one or more times
)
| . # anything else
/x
END;
preg_replace($regex, '$1', $text);
It searches for UTF-8 sequences, and captures those into group 1. It also...
Find out time it took for a python script to complete execution
...ocs,
def test():
"Stupid test function"
L = []
for i in range(100):
L.append(i)
if __name__=='__main__':
from timeit import Timer
t = Timer("test()", "from __main__ import test")
print t.timeit()
Then to convert to minutes, you can simply divide by 60. If you want...
What's the “average” requests per second for a production web application?
...
Wikipedia seems to be 30000 to 70000 per second spread over 300 servers (100 to 200 requests per second per machine, most of which is caches)
Geograph is getting 7000 images per week (1 upload per 95 seconds)
share
...
Random shuffling of an array
... be part of the package java.util. It's part of the standard library since v1.2.
– MauganRa
Feb 2 '17 at 16:04
3
...
boost::flat_map and its performance compared to map and unordered_map
...ertion.
Random search of 3 elements (clocks renormalized to 1)
in size = 100
in size = 10000
Iteration
over size 100 (only MediumPod type)
over size 10000 (only MediumPod type)
Final grain of salt
In the end I wanted to come back on "Benchmarking §3 Pt1" (the system allocator). In a...
Command-line Unix ASCII-based charting / plotting tool
... | ** |
1000 ++ * ++
| * |
| * ...