Can a class instance also be a class?
Blair Hall
b.hall at irl.cri.nz
Wed Aug 14 23:19:47 EDT 2002
I'm betting that the answer is no, but if I am wrong please explain!
The background to my question is that I was wondering about the most
appropriate ways of writing classes that are parameterized (like C++
templates).
My first choice was to wrap a class definition in a function, like
def _T_aClass(some_T):
class _aClass(object):
# ... uses some_T for something in body
return _aClass
This solution seems ok.
I wondered if a class could do something similar.
My first attempt doesn't look good but perhaps there
are improvements possible?
class _T_aClass(object):
def __init__(self,some_T):
class _aClass(object):
# ... uses some_T for something in body
self.__theClass
def __call__(self):
return self.__theClass
If nothing else, I don't like the fact that an instance of _T_aClass is
an object which when called
like a function returns a class.
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