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How to decide when to use Node.js?
...ited for applications where you'd like to maintain a persistent connection from the browser back to the server. Using a technique known as "long-polling", you can write an application that sends updates to the user in real time. Doing long polling on many of the web's giants, like Ruby on Rails or D...
How to calculate number of days between two given dates?
...e objects, you can just subtract them, which computes a timedelta object.
from datetime import date
d0 = date(2008, 8, 18)
d1 = date(2008, 9, 26)
delta = d1 - d0
print(delta.days)
The relevant section of the docs:
https://docs.python.org/library/datetime.html.
See this answer for another exampl...
Prepend a level to a pandas MultiIndex
...t also works for pd.Series objects, whereas the currently accepted answer (from 2013) does not.
– John
Jan 11 '18 at 12:03
1
...
BeautifulSoup Grab Visible Webpage Text
...
Try this:
from bs4 import BeautifulSoup
from bs4.element import Comment
import urllib.request
def tag_visible(element):
if element.parent.name in ['style', 'script', 'head', 'title', 'meta', '[document]']:
return False
...
ReactJS - Does render get called any time “setState” is called?
...date (run render function)?" every time you change state or pass new props from parent component.
You can write your own implementation of shouldComponentUpdate method for your component, but default implementation always returns true - meaning always re-run render function.
Quote from official do...
Standard way to embed version into python package?
...laced after the module docstring but before any import
statements except from __future__ imports.
You should also make sure that the version number conforms to the format described in PEP 440 (PEP 386 a previous version of this standard).
...
How do I create a directory from within Emacs?
...create directories in Emacs. The best answer I found was in another thread from a few years later. The answer from Victor Deryagin was exactly what I was looking for. Adding that code to your .emacs will make Emacs prompt you to create the directory when you go to save the file.
...
Configure Flask dev server to be visible across the network
...hen I run an app in dev mode ( http://localhost:5000 ), I cannot access it from other machines on the network (with http://[dev-host-ip]:5000 ). With Rails in dev mode, for example, it works fine. I couldn't find any docs regarding the Flask dev server configuration. Any idea what should be configu...
Finding the mode of a list
...unter supplied in the collections package which has a mode-esque function
from collections import Counter
data = Counter(your_list_in_here)
data.most_common() # Returns all unique items and their counts
data.most_common(1) # Returns the highest occurring item
Note: Counter is new in python 2.7...
Const in JavaScript: when to use it and is it necessary?
I've recently come across the const keyword in JavaScript. From what I can tell, it is used to create immutable variables , and I've tested to ensure that it cannot be redefined (in Node.js):
...