RosettaCodeData/Task/Anonymous-recursion/Haskell/anonymous-recursion-3.hs

ghci> map fib [-4..10]
[Nothing,Nothing,Nothing,Nothing,Just 1,Just 1,Just 2,Just 3,Just 5,Just 8,Just 13,Just 21,Just 34,Just 55,Just 89]
Initial data commit 2023-07-01 11:58:00 -04:00			`ghci> map fib [-4..10]`
			`[Nothing,Nothing,Nothing,Nothing,Just 1,Just 1,Just 2,Just 3,Just 5,Just 8,Just 13,Just 21,Just 34,Just 55,Just 89]`