Safe Haskell	None
Language	Haskell2010

Control.Carrier.Logger.IO

Contents

Description

An IO carrier for the Logger effect that writes logs to a Handle selected by the provided function.

Synopsis

Documentation

newtype LoggerIOC f (m :: Type -> Type) a Source #

Algebra for a simple IO logger. The inner function allows for selecting a Handle according to something like LogLevel.

Constructors

Instances details

MonadIO m => MonadIO (LoggerIOC f m) Source #
Instance details Defined in Control.Carrier.Logger.IO Methods liftIO :: IO a -> LoggerIOC f m a #
Applicative m => Applicative (LoggerIOC f m) Source #
Instance details Defined in Control.Carrier.Logger.IO Methods pure :: a -> LoggerIOC f m a # (<>) :: LoggerIOC f m (a -> b) -> LoggerIOC f m a -> LoggerIOC f m b # liftA2 :: (a -> b -> c) -> LoggerIOC f m a -> LoggerIOC f m b -> LoggerIOC f m c # (>) :: LoggerIOC f m a -> LoggerIOC f m b -> LoggerIOC f m b # (<*) :: LoggerIOC f m a -> LoggerIOC f m b -> LoggerIOC f m a #
Functor m => Functor (LoggerIOC f m) Source #
Instance details Defined in Control.Carrier.Logger.IO Methods fmap :: (a -> b) -> LoggerIOC f m a -> LoggerIOC f m b # (<$) :: a -> LoggerIOC f m b -> LoggerIOC f m a #
Monad m => Monad (LoggerIOC f m) Source #
Instance details Defined in Control.Carrier.Logger.IO Methods (>>=) :: LoggerIOC f m a -> (a -> LoggerIOC f m b) -> LoggerIOC f m b # (>>) :: LoggerIOC f m a -> LoggerIOC f m b -> LoggerIOC f m b # return :: a -> LoggerIOC f m a #
(Algebra sig m, MonadIO m) => Algebra (Logger :+: sig) (LoggerIOC HandleSelector m) Source #
Instance details Defined in Control.Carrier.Logger.IO Methods alg :: forall ctx (n :: Type -> Type) a. Functor ctx => Handler ctx n (LoggerIOC HandleSelector m) -> (Logger :+: sig) n a -> ctx () -> LoggerIOC HandleSelector m (ctx a) #

Helpers

Helper to run IO loggers by writing to the same Handle every time.

Arguments

:: HandleSelector	f
-> LoggerIOC HandleSelector m a
-> m a

Run logger, writing to a Handle selected by a function f.

Run logger, writing everything to stdout.

Run logger, writing everything to stderr.