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What is __future__ in Python used for and how/when to use it, and how it works
__future__ frequently appears in Python modules. I do not understand what __future__ is for and how/when to use it even after reading the Python's __future__ doc .
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What are some (concrete) use-cases for metaclasses?
...ate methods, than to do something like:
class PlottingInteractive:
add_slice = wrap_pylab_newplot(add_slice)
This method doesn't keep up with API changes and so on, but one that iterates over the class attributes in __init__ before re-setting the class attributes is more efficient and keeps t...
Why aren't superclass __init__ methods automatically invoked?
Why did the Python designers decide that subclasses' __init__() methods don't automatically call the __init__() methods of their superclasses, as in some other languages? Is the Pythonic and recommended idiom really like the following?
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Immutability of Strings in Java
...lease? That will make my understanding clear.
– Light_handle
Oct 12 '09 at 17:30
17
I've never se...
how to listen to N channels? (dynamic select statement)
...nformation before forwarding it to the aggregate channel.
In my (limited) testing, this method greatly out performs using the reflect package:
$ go test dynamic_select_test.go -test.bench=.
...
BenchmarkReflectSelect 1 5265109013 ns/op
BenchmarkGoSelect 20 81911344 ns/o...
What's a correct and good way to implement __hash__()?
What's a correct and good way to implement __hash__() ?
6 Answers
6
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Is there a __CLASS__ macro in C++?
Is there a __CLASS__ macro in C++ which gives the class name similar to __FUNCTION__ macro which gives the function name
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C++ mark as deprecated
...his all I got was a Microsoft specific solution; #pragma deprecated and __declspec(deprecated) .
7 Answers
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What is the Difference Between read() and recv() , and Between send() and write()?
...reverse problem if 13-10 are consecutive in the binary data, but I haven't tested it. But that appears to be another possible difference between send() and write().
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What __init__ and self do on Python?
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In this code:
class A(object):
def __init__(self):
self.x = 'Hello'
def method_a(self, foo):
print self.x + ' ' + foo
... the self variable represents the instance of the object itself. Most object-oriented languages pass this as a hidd...