Safe Haskell	Safe
Language	Haskell2010

Data.Bifunctor.Assoc

Synopsis

class Bifunctor p => Assoc p where
- assoc :: p (p a b) c -> p a (p b c)
- unassoc :: p a (p b c) -> p (p a b) c

Documentation

class Bifunctor p => Assoc p where #

"Semigroup-y" Bifunctors.

assoc . unassoc = id
unassoc . assoc = id
assoc . bimap (bimap f g) h = bimap f (bimap g h) . assoc

This library doesn't provide Monoidal class, with left and right unitors. Are they useful in practice?

Methods

assoc :: p (p a b) c -> p a (p b c) #

unassoc :: p a (p b c) -> p (p a b) c #

Instances details

Assoc Either #
Instance details Defined in Data.Bifunctor.Assoc Methods assoc :: Either (Either a b) c -> Either a (Either b c) # unassoc :: Either a (Either b c) -> Either (Either a b) c #
Assoc (,) #
Instance details Defined in Data.Bifunctor.Assoc Methods assoc :: ((a, b), c) -> (a, (b, c)) # unassoc :: (a, (b, c)) -> ((a, b), c) #
Assoc (Const :: Type -> Type -> Type) #
Instance details Defined in Data.Bifunctor.Assoc Methods assoc :: Const (Const a b) c -> Const a (Const b c) # unassoc :: Const a (Const b c) -> Const (Const a b) c #
Assoc (Tagged :: Type -> Type -> Type) #
Instance details Defined in Data.Bifunctor.Assoc Methods assoc :: Tagged (Tagged a b) c -> Tagged a (Tagged b c) # unassoc :: Tagged a (Tagged b c) -> Tagged (Tagged a b) c #