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Re: Fun python 3.2 one-liner

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harrismh777 <harrismh777@charter.net> writes:

> Seriously, these little one liners teach me more about the python
> language in less time than [...]

def f(x,n,w): return x if n==1 else\
    (lambda x0=f(x[::2],n/2,w[::2]),\
            x1=f(x[1::2],n/2,w[::2]): reduce(lambda a,b: a+b ,\
                                      zip(*[(x0[k]+w[k]*x1[k],\
                                             x0[k]-w[k]*x1[k])\
                                             for k in range(n/2)])))()

it was a joke of sort played on it.comp.lang.python

[thanks to marco (zip(*...))  and antonio (lambda with default
arguments)]

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Re: Fun python 3.2 one-liner harrismh777 <harrismh777@charter.net> - 2011-03-29 14:00 -0500
  Re: Fun python 3.2 one-liner gb <gb@cabiate.it> - 2011-04-04 22:09 +0200
    Re: Fun python 3.2 one-liner Chris Angelico <rosuav@gmail.com> - 2011-04-05 07:46 +1000
      Re: Fun python 3.2 one-liner Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2011-04-05 10:16 +1200
        Re: Fun python 3.2 one-liner Chris Angelico <rosuav@gmail.com> - 2011-04-05 08:45 +1000
        Re: Fun python 3.2 one-liner Emile van Sebille <emile@fenx.com> - 2011-04-04 15:46 -0700
      Re: Fun python 3.2 one-liner Giacomo Boffi <giacomo.boffi@polimi.it> - 2011-04-05 07:36 +0200

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