Safe Haskell	None
Language	Haskell2010

Control.Carrier.Trace.Ignoring

Contents

Trace carrier
Trace effect

Description

A carrier for the Trace effect that ignores all traced results. Useful when you wish to disable tracing without removing all trace statements.

Since: 1.0.0.0

Synopsis

runTrace :: TraceC m a -> m a
newtype TraceC m a = TraceC (m a)
module Control.Effect.Trace

Trace carrier

runTrace :: TraceC m a -> m a Source #

Run a Trace effect, ignoring all traces.

runTrace (trace s) = pure ()

runTrace (pure a) = pure a

Since: 1.0.0.0

newtype TraceC m a Source #

Since: 1.0.0.0

Constructors

TraceC (m a)

Instances

MonadTrans TraceC Source #
Instance details Defined in Control.Carrier.Trace.Ignoring Methods lift :: Monad m => m a -> TraceC m a #
Monad m => Monad (TraceC m) Source #
Instance details Defined in Control.Carrier.Trace.Ignoring Methods (>>=) :: TraceC m a -> (a -> TraceC m b) -> TraceC m b # (>>) :: TraceC m a -> TraceC m b -> TraceC m b # return :: a -> TraceC m a # fail :: String -> TraceC m a #
Functor m => Functor (TraceC m) Source #
Instance details Defined in Control.Carrier.Trace.Ignoring Methods fmap :: (a -> b) -> TraceC m a -> TraceC m b # (<$) :: a -> TraceC m b -> TraceC m a #
MonadFix m => MonadFix (TraceC m) Source #
Instance details Defined in Control.Carrier.Trace.Ignoring Methods mfix :: (a -> TraceC m a) -> TraceC m a #
MonadFail m => MonadFail (TraceC m) Source #
Instance details Defined in Control.Carrier.Trace.Ignoring Methods fail :: String -> TraceC m a #
Applicative m => Applicative (TraceC m) Source #
Instance details Defined in Control.Carrier.Trace.Ignoring Methods pure :: a -> TraceC m a # (<>) :: TraceC m (a -> b) -> TraceC m a -> TraceC m b # liftA2 :: (a -> b -> c) -> TraceC m a -> TraceC m b -> TraceC m c # (>) :: TraceC m a -> TraceC m b -> TraceC m b # (<*) :: TraceC m a -> TraceC m b -> TraceC m a #
MonadIO m => MonadIO (TraceC m) Source #
Instance details Defined in Control.Carrier.Trace.Ignoring Methods liftIO :: IO a -> TraceC m a #
Alternative m => Alternative (TraceC m) Source #
Instance details Defined in Control.Carrier.Trace.Ignoring Methods empty :: TraceC m a # (<\|>) :: TraceC m a -> TraceC m a -> TraceC m a # some :: TraceC m a -> TraceC m [a] # many :: TraceC m a -> TraceC m [a] #
MonadPlus m => MonadPlus (TraceC m) Source #
Instance details Defined in Control.Carrier.Trace.Ignoring Methods mzero :: TraceC m a # mplus :: TraceC m a -> TraceC m a -> TraceC m a #
Algebra sig m => Algebra (Trace :+: sig) (TraceC m) Source #
Instance details Defined in Control.Carrier.Trace.Ignoring Methods alg :: (Trace :+: sig) (TraceC m) a -> TraceC m a Source #

Trace effect

module Control.Effect.Trace