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letoh/sum.py

Created October 2, 2012 13:10
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sum.py
# http://www.ptt.cc/bbs/Python/M.1349181219.A.3C5.html
def main():
sum = lambda d: (lambda f,a:f(f,a))((lambda s,l,a=0:a if not l else s(s,l[1:],a+l[0])),d)
print sum([3,3,2,2,1])
main()
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