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What exactly does += do in python?
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In Python, += is sugar coating for the __iadd__ special method, or __add__ or __radd__ if __iadd__ isn't present. The __iadd__ method of a class can do anything it wants. The list object implements it and uses it to iterate over an iterable object append...
What is __gxx_personality_v0 for?
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It is used in the stack unwiding tables, which you can see for instance in the assembly output of my answer to another question. As mentioned on that answer, its use is defined by the Itanium C++ ABI, where it is called the Personality Routine.
The reason it "works" by defining it a...
How to get POSTed JSON in Flask?
... None here.
You need to set the request content type to application/json for the .json property and .get_json() method (with no arguments) to work as either will produce None otherwise. See the Flask Request documentation:
This will contain the parsed JSON data if the mimetype indicates JSON (...
Is it possible to declare two variables of different types in a for loop?
...o declare two variables of different types in the initialization body of a for loop in C++?
8 Answers
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Does Flask support regular expressions in its URL routing?
...regex will be evaluated directly at runtime. This shouldn't be problematic for smaller apps (or apps that reuse regex's multiple times, I'd think) as the last couple of regex patterns are stored compiled in memory.
– bbenne10
Jul 18 '13 at 14:13
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unique object identifier in javascript
...ed to do some experiment and I need to know some kind of unique identifier for objects in javascript, so I can see if they are the same. I don't want to use equality operators, I need something like the id() function in python.
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What is the id( ) function used for?
...an integer (or long integer) which is guaranteed to be unique and constant for this object during its lifetime." (Python Standard Library - Built-in Functions) A unique number. Nothing more, and nothing less. Think of it as a social-security number or employee id number for Python objects.
Is it...
Why does ReSharper tell me “implicitly captured closure”?
...ted as long as the first lambda is in use.
The compiler generates a class for both lambda expressions and puts all variables in that class which are used in the lambda expressions.
So in my example g and i are held in the same class for execution of my delegates. If g is a heavy object with a lot ...
Adding git branch on the Bash command prompt
...Its most basic usage is:
$ __git_ps1
(master)
It also takes an optional format string:
$ __git_ps1 'git:[%s]'
git:[master]
How to Get It
First, copy the file to somewhere (e.g. ~/.git-prompt.sh).
Option 1: use an existing copy on your filesystem. Example (Mac OS X 10.15):
$ find / -name 'g...
Convert sqlalchemy row object to python dict
...access the internal __dict__ of a SQLAlchemy object, like the following::
for u in session.query(User).all():
print u.__dict__
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