Copyright	(C) 2015-2018 Oleg Grenrus
License	BSD3
Maintainer	Oleg Grenrus <oleg.grenrus@iki.fi>
Safe Haskell	None
Language	Haskell2010

Data.Aeson.Extra.SymTag

Description

Synopsis

data SymTag (s :: Symbol) = SymTag

Documentation

data SymTag (s :: Symbol) Source #

Singleton string encoded and decoded as ifself.

λ> encode (SymTag :: SymTag "foobar")
"\"foobar\""

decode "\"foobar\"" :: Maybe (SymTag "foobar")
Just SymTag

decode "\"foobar\"" :: Maybe (SymTag "barfoo")
Nothing

Available with: base >=4.7

Constructors

SymTag

Instances

Bounded (SymTag s) Source #
Instance details Defined in Data.Aeson.Extra.SymTag Methods minBound :: SymTag s # maxBound :: SymTag s #
Enum (SymTag s) Source #
Instance details Defined in Data.Aeson.Extra.SymTag Methods succ :: SymTag s -> SymTag s # pred :: SymTag s -> SymTag s # toEnum :: Int -> SymTag s # fromEnum :: SymTag s -> Int # enumFrom :: SymTag s -> [SymTag s] # enumFromThen :: SymTag s -> SymTag s -> [SymTag s] # enumFromTo :: SymTag s -> SymTag s -> [SymTag s] # enumFromThenTo :: SymTag s -> SymTag s -> SymTag s -> [SymTag s] #
Eq (SymTag s) Source #
Instance details Defined in Data.Aeson.Extra.SymTag Methods (==) :: SymTag s -> SymTag s -> Bool # (/=) :: SymTag s -> SymTag s -> Bool #
Ord (SymTag s) Source #
Instance details Defined in Data.Aeson.Extra.SymTag Methods compare :: SymTag s -> SymTag s -> Ordering # (<) :: SymTag s -> SymTag s -> Bool # (<=) :: SymTag s -> SymTag s -> Bool # (>) :: SymTag s -> SymTag s -> Bool # (>=) :: SymTag s -> SymTag s -> Bool # max :: SymTag s -> SymTag s -> SymTag s # min :: SymTag s -> SymTag s -> SymTag s #
Read (SymTag s) Source #
Instance details Defined in Data.Aeson.Extra.SymTag Methods readsPrec :: Int -> ReadS (SymTag s) # readList :: ReadS [SymTag s] # readPrec :: ReadPrec (SymTag s) # readListPrec :: ReadPrec [SymTag s] #
Show (SymTag s) Source #
Instance details Defined in Data.Aeson.Extra.SymTag Methods showsPrec :: Int -> SymTag s -> ShowS # show :: SymTag s -> String # showList :: [SymTag s] -> ShowS #
KnownSymbol s => ToJSON (SymTag s) Source #
Instance details Defined in Data.Aeson.Extra.SymTag Methods toJSON :: SymTag s -> Value # toEncoding :: SymTag s -> Encoding # toJSONList :: [SymTag s] -> Value # toEncodingList :: [SymTag s] -> Encoding #
KnownSymbol s => FromJSON (SymTag s) Source #
Instance details Defined in Data.Aeson.Extra.SymTag Methods parseJSON :: Value -> Parser (SymTag s) # parseJSONList :: Value -> Parser [SymTag s] #
NFData (SymTag s) Source #	Since: 0.4.1.0
Instance details Defined in Data.Aeson.Extra.SymTag Methods rnf :: SymTag s -> () #