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What's the difference between “STL” and “C++ Standard Library”?
...82:2014 (and earlier versions, such as ISO/IEC 14882:2011).
The STL was already widely used as a library for C++, giving programmers access to containers, iterators and algorithms. When the standardisation happened, the language committee designed parts of the C++ Standard Library (which is part of...
How to import data from mongodb to pandas?
... else:
conn = MongoClient(host, port)
return conn[db]
def read_mongo(db, collection, query={}, host='localhost', port=27017, username=None, password=None, no_id=True):
""" Read from Mongo and Store into DataFrame """
# Connect to MongoDB
db = _connect_mongo(host=host, p...
Check if an apt-get package is installed and then install it if it's not on Linux
...hello package the second dpkg after apt remove shows that he package has already been removed without --purge:
dpkg-query: package 'hello' is not installed and no information is available
The documentations are also very unclear, e.g.:
sudo apt dselect-upgrade
did not remove certbot when it wa...
Rails: How can I set default values in ActiveRecord?
...efining defaults in your migration also works part of the time... As has already been mentioned this will not work when you just call Model.new.
Overriding initialize can work, but don't forget to call super!
Using a plugin like phusion's is getting a bit ridiculous. This is ruby, do we really need ...
What are enums and why are they useful?
...a mention of an enum being used in singleton pattern about purported thread safety benefits to such solution.
27 Answer...
How to post pictures to instagram using API
...
If you read the link you shared, the accepted answer is:
You cannot post pictures to Instagram via the API.
It seems you can emulate instagram on PC though.
Bluestacks is an emulator which lets you run android apps on your PC...
How to create a trie in Python
...'m interested in tries and DAWGs (direct acyclic word graph) and I've been reading a lot about them but I don't understand what should the output trie or DAWG file look like.
...
CSRF Token necessary when using Stateless(= Sessionless) Authentication?
... token auth?
JWT (Json Web Token): I think it's still a draft, but it's already used by many people and the concept looks simple and secure. (IETF: http://tools.ietf.org/html/draft-ietf-oauth-json-web-token-25 )
There are also libraries for lot's of framework available. Just google for it!
...
How are parameters sent in an HTTP POST request?
...Right Thing™" with such requests and provide you with easy access to the readily decoded values (like $_REQUEST or $_POST in PHP, or cgi.FieldStorage(), flask.request.form in Python).
Now let's digress a bit, which may help understand the difference ;)
The difference between GET and POST reque...
Where to use EJB 3.1 and CDI?
...g to align them. What aligning means is allowing people to do what they already can do, just without the @Stateful, @Stateless or @Singleton annotation at the top.
EJB and CDI in Implementation Terms
Ultimately, EJB and CDI share the same fundamental design of being proxied components. When you ...