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functional programming for Primes, inspired by Haskell example
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# !encoding=utf8 | |
# primes = filterPrime [2..] | |
# where filterPrime (p:xs) = | |
# p : filterPrime [x | x <- xs, x `mod` p /= 0] | |
# Infinite List | |
from pipe import * | |
from pipe import itertools | |
def primes(xs): | |
while 1: | |
p = next(xs) | |
yield p | |
xs = (lambda xs, p: (x for x in xs if x % p != 0))(xs, p) | |
print primes(itertools.count(2)) | take(25) | as_list | |
# Finite List | |
def rc(s): | |
return [s[0]] + rc([x for x in s[1:] if x % s[0] != 0]) if len(s) > 1 else [] | |
print rc(range(2, 103)) |
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