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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Associative-array-Merging/Haskell/associative-array-merging.hs Normal file
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data Item = Item
{ name :: Maybe String
, price :: Maybe Float
, color :: Maybe String
, year :: Maybe Int
} deriving (Show)
itemFromMerge :: Item -> Item -> Item
itemFromMerge (Item n p c y) (Item n1 p1 c1 y1) =
Item (maybe n pure n1) (maybe p pure p1) (maybe c pure c1) (maybe y pure y1)
main :: IO ()
main =
print $
itemFromMerge
(Item (Just "Rocket Skates") (Just 12.75) (Just "yellow") Nothing)
(Item Nothing (Just 15.25) (Just "red") (Just 1974))