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How to count certain elements in array?
...erator.)
Also consider using your own multiset data structure (e.g. like python's 'collections.Counter') to avoid having to do the counting in the first place.
class Multiset extends Map {
constructor(...args) {
super(...args);
}
add(elem) {
if (!this.has(elem))
...
How do you access the matched groups in a JavaScript regular expression?
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I improved this to make it similar to python's re.findall(). It groups up all matches into an array of arrays. It also fixes the global modifier infinite loop issue. jsfiddle.net/ravishi/MbwpV
– ravishi
Nov 21 '13 at 20:0...
Combine two columns of text in pandas dataframe
I have a 20 x 4000 dataframe in Python using pandas. Two of these columns are named Year and quarter . I'd like to create a variable called period that makes Year = 2000 and quarter= q2 into 2000q2 .
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How to execute an external program from within Node.js?
...execute an external program from within node.js? Is there an equivalent to Python's os.system() or any library that adds this functionality?
...
Is Redis just a cache?
...Sentinel and automatic partitioning with Redis Cluster.
implementaion with python
https://beyondexperiment.com/vijayravichandran06/redis-data-structure-with-python/
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How do I manipulate a variable whose name conflicts with PDB commands?
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Use an exclamation mark ! before a statement to have it run :
python -m pdb test.py
> /home/user/test.py(1)<module>()
-> print('foo')
(Pdb) !n = 77
(Pdb) !n
77
(Pdb) n
foo
> /home/user/test.py(2)<module>()
-> print('bar')
(Pdb)
The docs say:
! statement
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Unittest setUp/tearDown for several tests
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For python 2.5, and when working with pydev, it's a bit hard. It appears that pydev doesn't use the test suite, but finds all individual test cases and runs them all separately.
My solution for this was using a class variable li...
How to keep the console window open in Visual C++?
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Alternatively, you could just include some Python code in your SCons script to do it yourself each time a project file is generated. I believe VS project files conform to the XML standard, so it should be fairly easy to add the missing elements, and should only requir...
How do I get user IP address in django?
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You can use django-ipware which supports Python 2 & 3 and handles IPv4 & IPv6.
Install:
pip install django-ipware
Simple Usage:
# In a view or a middleware where the `request` object is available
from ipware import get_client_ip
ip, is_routable = get_c...
What is “Linting”?
...uality). They are available for most languages like JavaScript, CSS, HTML, Python, etc..
Some of the useful linters are JSLint, CSSLint, JSHint, Pylint
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