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What is getattr() exactly and how do I use it?
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124
getattr(object, 'x') is completely equivalent to object.x.
There are only two cases where get...
Applying function with multiple arguments to create a new pandas column
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>>> import numpy as np
>>> df = pd.DataFrame({"A": [10,20,30], "B": [20, 30, 10]})
>>> df['new_column'] = np.multiply(df['A'], df['B'])
>>> df
A B new_column
0 10 20 200
1 20 30 600
2 30 10 300
or vectorize arbitrary functi...
powershell - extract file name and extension
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answered Mar 20 '12 at 14:45
GoyuixGoyuix
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How to set up a PostgreSQL database in Django
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210
You need to install psycopg2 Python library.
Installation
Download http://initd.org/psycop...
How do I ZIP a file in C#, using no 3rd-party APIs?
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edited Mar 24 '11 at 13:03
adrianbanks
74.8k1919 gold badges162162 silver badges195195 bronze badges
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How to make vi redraw screen?
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218
I've been using ctrl+L for such purposes for 35 years now, what's wrong with it?
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Quick easy way to migrate SQLite3 to MySQL? [closed]
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62
Here is a list of converters (not updated since 2011):
https://www2.sqlite.org/cvstrac/wiki?p=...
Can I install/update WordPress plugins without providing FTP access?
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32 Answers
32
Active
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Named capturing groups in JavaScript regex?
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ECMAScript 2018 introduces named capturing groups into JavaScript regexes.
Example:
const auth = 'Bearer AUTHORIZATION_TOKEN'
const { groups: { token } } = /Bearer (?<token>[^ $]*)/.exec(auth)
console.log(token) // "Prints...
Unable to understand useCapture parameter in addEventListener
....log(1)}, false);
window.addEventListener("click", function(){console.log(2)}, true);
window.addEventListener("click", function(){console.log(3)}, false);
window.addEventListener("click", function(){console.log(4)}, true);
The log messages will appear in this order:
2 (defined first, usi...