Monoid

trait Monoid[a: Type] with SemiGroup[a]Source

A trait for Monoids, objects that support an associative binary operation combine and neutral element empty.

Instances

instance Monoid[Chain[a]]Source

instance Monoid[DelayList[a]]Source

instance Monoid[Identity[a]] with Monoid[a]Source

instance Monoid[List[a]]Source

instance Monoid[Map[k, v]] with Order[k], Monoid[v]Source

instance Monoid[Unit]Source

instance Monoid[Int8]Source

instance Monoid[Int16]Source

instance Monoid[Int32]Source

instance Monoid[Int64]Source

instance Monoid[BigInt]Source

instance Monoid[Float32]Source

instance Monoid[Float64]Source

instance Monoid[BigDecimal]Source

instance Monoid[String]Source

instance Monoid[(a1, a2)] with Monoid[a1], Monoid[a2]Source

instance Monoid[(a1, a2, a3)] with Monoid[a1], Monoid[a2], Monoid[a3]Source

instance Monoid[(a1, a2, a3, a4)] with Monoid[a1], Monoid[a2], Monoid[a3], Monoid[a4]Source

instance Monoid[(a1, a2, a3, a4, a5)] with Monoid[a1], Monoid[a2], Monoid[a3], Monoid[a4], Monoid[a5]Source

instance Monoid[(a1, a2, a3, a4, a5, a6)] with Monoid[a1], Monoid[a2], Monoid[a3], Monoid[a4], Monoid[a5], Monoid[a6]Source

instance Monoid[(a1, a2, a3, a4, a5, a6, a7)] with Monoid[a1], Monoid[a2], Monoid[a3], Monoid[a4], Monoid[a5], Monoid[a6], Monoid[a7]

Source

instance Monoid[(a1, a2, a3, a4, a5, a6, a7, a8)] with Monoid[a1], Monoid[a2], Monoid[a3], Monoid[a4], Monoid[a5], Monoid[a6], Monoid[a7], Monoid[a8]

Source

instance Monoid[(a1, a2, a3, a4, a5, a6, a7, a8, a9)] with Monoid[a1], Monoid[a2], Monoid[a3], Monoid[a4], Monoid[a5], Monoid[a6], Monoid[a7], Monoid[a8], Monoid[a9]

Source

instance Monoid[(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10)] with Monoid[a1], Monoid[a2], Monoid[a3], Monoid[a4], Monoid[a5], Monoid[a6], Monoid[a7], Monoid[a8], Monoid[a9], Monoid[a10]

Source

instance Monoid[MultiMap[k, v]] with Order[k], Order[v]Source

instance Monoid[Option[a]] with Monoid[a]Source

instance Monoid[RichString]Source

instance Monoid[Any]Source

instance Monoid[All]Source

instance Monoid[Set[a]] with Order[a]Source

instance Monoid[Validation[e, t]] with Monoid[t]Source

instance Monoid[Vector[a]]Source

Signatures

def empty(): a with Monoid[a] Source

Returns a neutral element.

Trait Definitions

def combine(x: a, y: a): a with Monoid[a] Source

Returns the result of combining x and y using SemiGroup's combine.

Module Definitions

def fold(t: t[a]): a \ Aef[t] with Foldable[t], Monoid[a] Source

Returns the result of applying combine to all the elements in t, using empty as the initial value.