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maticzav/Main.elm

Created January 23, 2017 10:44
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Elm - get one before last in list
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Main.elm
getOneBeforeLast : List a -> Maybe a
getOneBeforeLast list =
case list of
[] -> Nothing
a :: _ :: [] -> Just a
_ :: a -> getOneBeforeLast a
-- getOneBeforeLast [1,2,3,4,5] == [4]
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