MonadicBang.Effect.Writer.Discard

A Writer carrier that discards any values it is told

Documentation

newtype DiscardC w m a

Constructors

DiscardC

Fields

• evalDiscardC :: m a

Instances

(Monoid w, Algebra sig m) => Algebra (Writer w :+: sig) (DiscardC w m)

Defined in MonadicBang.Effect.Writer.Discard

Methods

alg :: forall ctx (n :: Type -> Type) a. Functor ctx => Handler ctx n (DiscardC w m) -> (Writer w :+: sig) n a -> ctx () -> DiscardC w m (ctx a)

Applicative m => Applicative (DiscardC w m)

Defined in MonadicBang.Effect.Writer.Discard

Methods

pure :: a -> DiscardC w m a

(<*>) :: DiscardC w m (a -> b) -> DiscardC w m a -> DiscardC w m b

liftA2 :: (a -> b -> c) -> DiscardC w m a -> DiscardC w m b -> DiscardC w m c

(*>) :: DiscardC w m a -> DiscardC w m b -> DiscardC w m b

(<*) :: DiscardC w m a -> DiscardC w m b -> DiscardC w m a

Functor m => Functor (DiscardC w m)

Defined in MonadicBang.Effect.Writer.Discard

Methods

fmap :: (a -> b) -> DiscardC w m a -> DiscardC w m b

(<$) :: a -> DiscardC w m b -> DiscardC w m a

Monad m => Monad (DiscardC w m)

Defined in MonadicBang.Effect.Writer.Discard

Methods

(>>=) :: DiscardC w m a -> (a -> DiscardC w m b) -> DiscardC w m b

(>>) :: DiscardC w m a -> DiscardC w m b -> DiscardC w m b

return :: a -> DiscardC w m a

evalWriter :: (Monoid w, Algebra sig m) => DiscardC w m a -> m a