Honaker primes: Difference between revisions

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→‎{{header|Haskell}}: return -> pure
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m (→‎{{header|Haskell}}: return -> pure)
Line 365:
------------------------- GENERIC ------------------------
sumDigits :: Integer -> Integer
sumDigits = foldr ((+) . read . returnpure) 0 . show
 
both :: (a -> b) -> (a, a) -> (b, b)
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