RosettaCodeData/Task/Fibonacci-sequence/Purity/fibonacci-sequence-3.purity
2023-07-01 13:44:08 -04:00

11 lines
266 B
Text

import Histo
data Fib3 = Histo . Memoize
<
const One,
(p1 =>
<
const One,
(p2 => Add (outl $p1) (outl $p2)). UnmakeCofree
> (outr $p1)) . UnmakeCofree
>