HaskellWorks.Data.Aeson

Documentation

newtype JsonEndo a

Constructors

JsonEndo

Fields

• unJsonEndo :: [a] -> [a]

Instances

Semigroup (JsonEndo a)

Defined in HaskellWorks.Data.Aeson

Methods

(<>) :: JsonEndo a -> JsonEndo a -> JsonEndo a

sconcat :: NonEmpty (JsonEndo a) -> JsonEndo a

stimes :: Integral b => b -> JsonEndo a -> JsonEndo a

Monoid (JsonEndo a)

Defined in HaskellWorks.Data.Aeson

Methods

mempty :: JsonEndo a

mappend :: JsonEndo a -> JsonEndo a -> JsonEndo a

mconcat :: [JsonEndo a] -> JsonEndo a

KeyValue a => KeyValue (JsonEndo a)

Defined in HaskellWorks.Data.Aeson

Methods

(.=) :: ToJSON v => Key -> v -> JsonEndo a

objectWithoutNulls :: [Pair] -> Value

readJson :: Read a => String -> String -> Parser a

objectEndo :: [JsonEndo Pair] -> Value

Same as object except used in combination with .?= and .!= instead of .=.

For example:

toJSON o = objectEndo
  [ "mandatory" .!= o ^. the "mandatory"
  , "optional"  .?= o ^. the "optional"
  ]

(.?=) :: (KeyValue p, ToJSON v, Monoid p) => Key -> Maybe v -> p infixr 7

Render optional fields as missing in JSON output.

(.!=) :: (KeyValue kv, ToJSON v) => Key -> v -> kv infixr 7

Same as .=, but with lower precedence to work well with lens.