Diez B. Roggisch wrote: >> This is already better. Is it possible to define function composition >> as an operator and have something like ([EMAIL PROTECTED]@sorted)(items) >> or (list*reversed*sorted)(items) ? > > Not on functions, but on classes/instances. So something like this might > work for you (untested): > > class FunctionComposer(object): > def __init__(self, f=None): > if f is None: > f = lambda x: x > self._f = f > > def __call__(self, *args, **kwargs): > return self._f(*args, **kwargs) > > def __mul__(self, other): > def combined(*args, **kwargs): > return other(self._f(*args, **kwargs)) > return FunctionComposer(combined) > > fc = FunctionComposer > > Then you can write > > (fc() * list * reversed * sorted)(items)
A clever little hack, but please don't do this. Anyone else who will read your code will thank you. -- Michael Hoffman -- http://mail.python.org/mailman/listinfo/python-list
