[Python-Dev] IOCP (I/O Completion Port) in Python ?
Hello: I wondering why there is no standard IOCP module in Python ? As I know: Python3 have support epoll in linux and kqueue in freebsd. Is there a plan to add IOCP module for Windows ? Regards! peipei ___ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
[Python-Dev] Why not support user defined operator overloading ?
Hello: As far as I know, there is not a language support user defined operator overloading. Python3 can overloading belowed operators. - negated + unchanged - minus + add * multiplication / division // true division % remainder ** power (Do I miss something ?) If we can overloading these operators, why we can't overloading other operators? (like .* often used in matrix, U in set operation) Regards! Peipei ___ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] Why not support user defined operator overloading ?
Hello:
I agree with Steven D'Aprano.
Here is an example:
class A(object):
def __init__(self, value):
self.value = value
def add(self, other):
return self.value + other.value
__magic_method__ = {'+':add}
a1 = A(1)
a2 = A(2)
We only need a macro expand
a1 + a2
to
a1.__magic__method__['+'](a, b)
the later can be execute on Python.
Regards
peipei
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Re: [Python-Dev] Why not support user defined operator overloading ?
On 2013/9/30 8:53 Greg Ewing wrote: > It does need to know the operator's precedence and >associativity, though, which means either declaring >it somewhere, or having some kind of fixed rule I suggest all user defined operator are at lowest priority. Regards peipei ___ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
