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1. TcRnTagToEnumUnspecifiedResTy :: Type -> TcRnMessage

   ghc	GHC.Tc.Errors.Types

   TcRnTagToEnumUnspecifiedResTy is an error that occurs when the 'tagToEnum#' function is not given a concrete result type. Example(s): foo :: forall a. a foo = tagToEnum# 0# Test cases: typecheckshould_failtcfail164

2. type PhaseNum = Int

   ghc	GHC.Types.Basic

   Phase Number

3. diagnosticCodeNumber :: DiagnosticCode -> Natural

   ghc	GHC.Types.Error

   the actual diagnostic code

4. fromPersistValueEnum :: (Enum a, Bounded a) => PersistValue -> Either Text a

   persistent	Database.Persist.Class.PersistEntity

   Convenience function for getting a free PersistField instance from a type with an Enum instance. This function also requires a Bounded instance to improve the reporting of errors. Example usage in combination with toPersistValueEnum:

   data SeverityLevel = Low | Medium | Critical | High
   deriving (Enum, Bounded)
   instance PersistField SeverityLevel where
   fromPersistValue = fromPersistValueEnum
   toPersistValue = toPersistValueEnum
   

5. toPersistValueEnum :: Enum a => a -> PersistValue

   persistent	Database.Persist.Class.PersistEntity

   Convenience function for getting a free PersistField instance from a type with an Enum instance. The function derivePersistField from the persistent-template package should generally be preferred. However, if you want to ensure that an ORDER BY clause that uses your field will order rows by the data constructor order, this is a better choice. Example usage in combination with fromPersistValueEnum:

   data SeverityLevel = Low | Medium | Critical | High
   deriving (Enum, Bounded)
   instance PersistField SeverityLevel where
   fromPersistValue = fromPersistValueEnum
   toPersistValue = toPersistValueEnum
   

6. parseBoundedEnumOf :: (Bounded a, Enum a) => (a -> Text) -> Text -> Either Text a

   http-api-data	Web.HttpApiData

   Parse values based on a precalculated mapping of their Text representation.

   >>> parseBoundedEnumOf toUrlPiece "true" :: Either Text Bool
   Right True
   

   For case insensitive parser see parseBoundedEnumOfI.

7. parseBoundedEnumOfI :: (Bounded a, Enum a) => (a -> Text) -> Text -> Either Text a

   http-api-data	Web.HttpApiData

   Case insensitive. Parse values case insensitively based on a precalculated mapping of their Text representations.

   >>> parseBoundedEnumOfI toUrlPiece "FALSE" :: Either Text Bool
   Right False
   

   For case sensitive parser see parseBoundedEnumOf.

8. lookupBoundedEnumOf :: (Bounded a, Enum a, Eq b) => (a -> b) -> b -> Maybe a

   http-api-data	Web.Internal.HttpApiData

   Lookup values based on a precalculated mapping of their representations.

9. parseBoundedEnumOf :: (Bounded a, Enum a) => (a -> Text) -> Text -> Either Text a

   http-api-data	Web.Internal.HttpApiData

   Parse values based on a precalculated mapping of their Text representation.

   >>> parseBoundedEnumOf toUrlPiece "true" :: Either Text Bool
   Right True
   

   For case insensitive parser see parseBoundedEnumOfI.

10. parseBoundedEnumOfI :: (Bounded a, Enum a) => (a -> Text) -> Text -> Either Text a

    http-api-data	Web.Internal.HttpApiData

    Case insensitive. Parse values case insensitively based on a precalculated mapping of their Text representations.

    >>> parseBoundedEnumOfI toUrlPiece "FALSE" :: Either Text Bool
    Right False
    

    For case sensitive parser see parseBoundedEnumOf.

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