Data.Aeson.Deriving.EmptyObject

Allow unit-like types to be serialized as the empty object This can be combined with WithConstantFields.

Documentation

newtype EmptyObject a

For data types with exactly one value, this data type changes the serialization to be the empty JSON object. It can be combined with WithConstantFields.

Constructors

EmptyObject a

Instances

UnitLike (Rep a) => ToJSON (EmptyObject a)

Defined in Data.Aeson.Deriving.EmptyObject

Methods

toJSON :: EmptyObject a -> Value

toEncoding :: EmptyObject a -> Encoding

toJSONList :: [EmptyObject a] -> Value

toEncodingList :: [EmptyObject a] -> Encoding

(Generic a, UnitLike (Rep a)) => FromJSON (EmptyObject a)

Defined in Data.Aeson.Deriving.EmptyObject

Methods

parseJSON :: Value -> Parser (EmptyObject a)

parseJSONList :: Value -> Parser [EmptyObject a]

class UnitLike (f :: Type -> Type) where

class for data types with a single constructor

Methods

gPoint :: f a

Instances

UnitLike (U1 :: Type -> Type)

Defined in Data.Aeson.Deriving.EmptyObject

Methods

gPoint :: U1 a

UnitLike a => UnitLike (M1 D meta a)

Defined in Data.Aeson.Deriving.EmptyObject

Methods

gPoint :: M1 D meta a a0

UnitLike a => UnitLike (M1 C meta a)

Defined in Data.Aeson.Deriving.EmptyObject

Methods

gPoint :: M1 C meta a a0