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How can I get a list of all classes within current module in Python?
...__name__]
In your context:
import sys, inspect
def print_classes():
for name, obj in inspect.getmembers(sys.modules[__name__]):
if inspect.isclass(obj):
print(obj)
And even better:
clsmembers = inspect.getmembers(sys.modules[__name__], inspect.isclass)
Because inspect...
Why is __dirname not defined in node REPL?
...on't need to import core modules in the REPL; it will load them on the fly for you.
– c24w
Oct 31 '19 at 12:15
This gi...
How do I implement interfaces in python?
...on't have to have them in Python.
That said, there are still several uses for interfaces. Some of them are covered by Pythons Abstract Base Classes, introduced in Python 2.6. They are useful, if you want to make base classes that cannot be instantiated, but provide a specific interface or part of a...
How do I sort an observable collection?
...nd returning the same object sorted can be done using an extension method. For larger collections watch out for the number of collection changed notifications.
I have updated my code to improve performance (thanks to nawfal) and to handle duplicates which no other answers here do at time of writing....
Getting the name of a child class in the parent class (static context)
...
You don't need to wait for PHP 5.3 if you're able to conceive of a way to do this outside of a static context. In php 5.2.9, in a non-static method of the parent class, you can do:
get_class($this);
and it will return the name of the child clas...
Calling a base class's classmethod in Python
...
Yeah, this only works for new-style classes, which derive from object. (at least in Python 2, but in Py3 I think all classes are new-style, IIRC) Otherwise you have to do Base.do(self, ...), I think, thereby hard-coding the name of the superclass....
How can I multiply and divide using only bit shifting and adding?
...Hacker's Delight" by Henry S. Warren (ISBN 9780201914658).
The first idea for implementing division is to write the inverse value of the denominator in base two.
E.g.,
1/3 = (base-2) 0.0101 0101 0101 0101 0101 0101 0101 0101 .....
So,
a/3 = (a >> 2) + (a >> 4) + (a >> 6) + ... ...
What algorithm does Readability use for extracting text from URLs?
For a while, I've been trying to find a way of intelligently extracting the "relevant" text from a URL by eliminating the text related to ads and all the other clutter.After several months of researching, I gave it up as a problem that cannot be accurately determined. (I've tried different ways but ...
How to calculate moving average using NumPy?
...
If you just want a straightforward non-weighted moving average, you can easily implement it with np.cumsum, which may be is faster than FFT based methods:
EDIT Corrected an off-by-one wrong indexing spotted by Bean in the code. EDIT
def moving_averag...
What does the “__block” keyword mean?
..., the modifications done inside the block are also visible outside of it.
For an example and more info, see The __block Storage Type in Apple's Blocks Programming Topics.
The important example is this one:
extern NSInteger CounterGlobal;
static NSInteger CounterStatic;
{
NSInteger localCount...