RosettaCodeData/Task/Optional-parameters/Haskell/optional-parameters-2.hs

13 lines
364 B
Haskell

import Data.Maybe (fromMaybe)
-- Use fromMaybe as an operator because its prettier
(//) = flip fromMaybe
sorter :: Maybe String -> Maybe Int -> Maybe Bool -> [[String]] -> [[String]]
sorter ((// "lex") -> cmp)
((// 0) -> col)
((// False) -> rev) = undefined
main = do
sorter (Just "foo") (Just 1) (Just True)
sorter Nothing Nothing Nothing