Safe Haskell	None
Language	Haskell2010

Options.Harg.Sources.Env

Synopsis

Documentation

Source that enables a parser to read options from environment variables.

Constructors

Instances

GetSource EnvSource f Source #
Instance details Defined in Options.Harg.Sources.Env Associated Types type SourceVal EnvSource :: Type Source # Methods getSource :: HargCtx -> EnvSource f -> IO (SourceVal EnvSource) Source #
Generic (EnvSource f) Source #
Instance details Defined in Options.Harg.Sources.Env Associated Types type Rep (EnvSource f) :: Type -> Type # Methods from :: EnvSource f -> Rep (EnvSource f) x # to :: Rep (EnvSource f) x -> EnvSource f #
ProductB EnvSource Source #
Instance details Defined in Options.Harg.Sources.Env Methods bprod :: EnvSource f -> EnvSource g -> EnvSource (Product f g) # buniq :: (forall (a :: k). f a) -> EnvSource f #
TraversableB EnvSource Source #
Instance details Defined in Options.Harg.Sources.Env Methods btraverse :: Applicative t => (forall (a :: k). f a -> t (g a)) -> EnvSource f -> t (EnvSource g) #
FunctorB EnvSource Source #
Instance details Defined in Options.Harg.Sources.Env Methods bmap :: (forall (a :: k). f a -> g a) -> EnvSource f -> EnvSource g #
type SourceVal EnvSource Source #
Instance details Defined in Options.Harg.Sources.Env type SourceVal EnvSource = EnvSourceVal
type Rep (EnvSource f) Source #
Instance details Defined in Options.Harg.Sources.Env type Rep (EnvSource f) = D1 (MetaData "EnvSource" "Options.Harg.Sources.Env" "harg-0.2.0.0-inplace" False) (C1 (MetaCons "EnvSource" PrefixI False) (U1 :: Type -> Type))

Value of EnvSource, which is an association list between environment variable names and values (strings).

Constructors

Instances

FunctorB a => RunSource EnvSourceVal a Source #
Instance details Defined in Options.Harg.Sources.Env Methods runSource :: Applicative f => EnvSourceVal -> a (Compose Opt f) -> [a (Compose SourceRunResult f)] Source #

Try to get a value from the environment variable association list.