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<source lang="haskell"> | |||
-- Point-free style | |||
fib :: Integer -> Integer | |||
fib = (fibs !!) | |||
where fibs = 0 : scanl (+) 1 fibs | |||
-- Explicit | |||
fib :: Integer -> Integer | |||
fib n = fibs !! n | |||
where fibs = 0 : scanl (+) 1 fibs | |||
</source> | |||
Revision as of 19:47, 3 February 2011
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-- Point-free style
fib :: Integer -> Integer
fib = (fibs !!)
where fibs = 0 : scanl (+) 1 fibs
-- Explicit
fib :: Integer -> Integer
fib n = fibs !! n
where fibs = 0 : scanl (+) 1 fibs