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{-# LANGUAGE GADTs #-}
import Data.List
import Data.Function
import Data.Ord
main :: IO ()
main = do
putStrLn "hello"
data StringOrd where
StringOrd :: Ord a => (String -> a) -> StringOrd
myList :: [StringOrd]
myList =
[ StringOrd $ \str -> 2
, StringOrd $ \str -> "hello: " <> str
]
sort' :: StringOrd -> [String] -> [String]
sort' (StringOrd f) xs = sortBy (comparing f) xs
myFunction :: [String] -> [String]
myFunction xs = sort' (myList !! 0) xs
 
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