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19 lines
425 B
Idris
19 lines
425 B
Idris
import Language.JSON
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import Data.List
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import Data.String
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main : IO ()
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main = printLn $ filter (not . roundTrips) chars
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where chars : List Int
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chars = [0 .. 55295]
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roundTrips : Int -> Bool
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roundTrips n =
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let s = singleton $ chr n
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v = JString s
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in case parse (show v) of
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Just (JString x) => x == s
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_ => False
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