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New posts in monoids

Group values by a key with any Monoid

scala monads scalaz monoids

Stack overflow in monoidal fold over large list

Monoid homomorphism and isomorphism

Are monads Writer m and Either e categorically dual?

Monoidal folds on fixed points

Defining a monoid instance for a record type

haskell typeclass monoids

Haskell - wrapping and unwrapping newtype wrappers - is there an easier way?

haskell monoids

Instancing Monoid for a Type

haskell ghci monoids

Haskell: Better way of writing Maybe Endo?

haskell maybe monoids

How/can this type be made into a Monoid instance

How does Monoid assist in parallel training?

Can you formulate the Bubble sort as a monoid or semigroup?

Difference between associative and commutative

Is this a good monoid action?

haskell monoids

Debugging infinite Sum in Haskell

How do you implement monoid interface for this tree in haskell?

Haskell - Implementing Monoid what happens if the operator is not associative

haskell monoids

How do I use a monoid instance of a function?

haskell monoids

Can the composite pattern be used to generate HTML from a tree and handle the indenting as well, or this inherently not possible?

Is there a "unit" class? Would it be useful?