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What is the most efficient way of finding all the factors of a number in Python?
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from functools import reduce
def factors(n):
return set(reduce(list.__add__,
([i, n//i] for i in range(1, int(n**0.5) + 1) if n % i == 0)))
This will return all of the factors, very quickly, of a n...
Spring Boot - inject map from application.yml
...g Boot application with the following application.yml - taken basically from here :
7 Answers
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How to push to a non-bare Git repository?
...ository. Sometimes I'm not online, so I have a separate repository (cloned from my remote) on my laptop.
5 Answers
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How do I update pip itself from inside my virtual environment?
...nd like that: python -m pip install --upgrade pip to avoid running pip.exe from scripts directory.
– bialix
Feb 19 '14 at 14:47
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Extract hostname name from string
I would like to match just the root of a URL and not the whole URL from a text string. Given:
27 Answers
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Is REST DELETE really idempotent?
...state of the system after the request has completed
In all cases (apart from the error issues - see below), the account no longer exists.
From here
"Methods can also have the property of
"idempotence" in that (aside from
error or expiration issues) the
side-effects of N > 0 identic...
Generating random numbers in Objective-C
...and(3) and
random(3).
The arc4random_stir() function reads data from /dev/urandom and uses it to permute the S-Boxes via
arc4random_addrandom().
There is no need to call arc4random_stir() before using arc4random(), since arc4random() automatically
initializes itself.
EXAM...
How to pull request a wiki page on GitHub?
...lude a link to your repo and describe what you've changed.
Goto #2
(From How you can contribute to Taffy documentation.)
If it were me, I'd create an issue in the main repository (that is, the one you forked) suggesting an update to the wiki. If issues aren't enabled, then email's about the...
How to stop C# console applications from closing automatically? [duplicate]
... the output before the console window closes. When the application is used from the command line no pause is needed, as the console window does not close after a command has finished.
– Jeppe Stig Nielsen
Aug 5 '14 at 21:36
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Remove NA values from a vector
...he subject, see here for a good discussion of some of the issues involved, from the point of view of programmers who were engaged in incorporating R-like NA-handling facilities in Python's excellent NumPy package.)
– Josh O'Brien
Aug 2 '19 at 20:24
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