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NathanWaltz

Primes

Apr 7th, 2021
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  1. -- source: https://wiki.haskell.org/Fold
  2. primes :: (Integral a) => [a]
  3. primes = 2 : 3 : ([5,7..] `minus`
  4.                      foldi (\(x:xs) -> (x:) . union xs) []
  5.                           [[p*p, p*p+2*p..] | p <- tail primes])
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