Add file

src/NewInt.hs

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+{-# LANGUAGE DeriveGeneric #-}
+{-# LANGUAGE DeriveAnyClass #-}
+{-# LANGUAGE StrictData #-}
+{-# LANGUAGE TemplateHaskell #-}
+{-# LANGUAGE GeneralizedNewtypeDeriving #-}
+{-# LANGUAGE DerivingStrategies #-}
+module NewInt where
+
+--import qualified Data.IntSet as IS
+import qualified Data.IntMap.Strict as IM
+import Control.Lens
+import Data.Aeson
+import Data.Aeson.TH
+
+newtype NewInt a = NInt { _unNInt :: Int}
+    deriving newtype (Eq,Ord,Show,Num,Read)
+
+newtype NewIntMap a b = NIntMap { _unNIntMap :: IM.IntMap b}
+    deriving (Eq,Ord,Show,Read)
+
+makeLenses ''NewInt
+makeLenses ''NewIntMap
+deriveJSON defaultOptions ''NewInt
+deriveJSON defaultOptions ''NewIntMap