Data.Monoid.Dual

newtype Dual a

The dual of a monoid.

Dual x <> Dual y == Dual (y <> x)
(mempty :: Dual _) == Dual mempty

Constructors

• Dual a

Instances

• (Eq a) => Eq (Dual a)
• Eq1 Dual
• (Ord a) => Ord (Dual a)
• Ord1 Dual
• (Bounded a) => Bounded (Dual a)
• (Show a) => Show (Dual a)
• Functor Dual
• Apply Dual
• Applicative Dual
• Bind Dual
• Monad Dual
• (Semigroup a) => Semigroup (Dual a)
• (Monoid a) => Monoid (Dual a)