cats.kernel

CommutativeMonoid

trait CommutativeMonoid[A] extends Monoid[A] with CommutativeSemigroup[A]

CommutativeMonoid represents a commutative monoid.

A monoid is commutative if for all x and y, x |+| y === y |+| x.

Linear Supertypes
CommutativeSemigroup[A], Monoid[A], Semigroup[A], Serializable, Serializable, Any
Known Subclasses
BigDecimalGroup, BigIntGroup, BitSetSemilattice, BoundedSemilattice, ByteGroup, CommutativeGroup, DoubleGroup, DurationGroup, FloatGroup, IntGroup, LongGroup, SetSemilattice, ShortGroup, UnitAlgebra
Ordering
  1. Alphabetic
  2. By inheritance
Inherited
  1. CommutativeMonoid
  2. CommutativeSemigroup
  3. Monoid
  4. Semigroup
  5. Serializable
  6. Serializable
  7. Any
  1. Hide All
  2. Show all
Learn more about member selection
Visibility
  1. Public
  2. All

Abstract Value Members

  1. abstract def combine(x: A, y: A): A

    Associative operation which combines two values.

    Associative operation which combines two values.

    Definition Classes
    Semigroup

  2. abstract def empty: A

    Return the identity element for this monoid.

    Return the identity element for this monoid.

    Definition Classes
    Monoid

  3. abstract def getClass(): Class[_]

    Definition Classes
    Any

Concrete Value Members

  1. final def !=(arg0: Any): Boolean

    Definition Classes
    Any

  2. final def ##(): Int

    Definition Classes
    Any

  3. final def ==(arg0: Any): Boolean

    Definition Classes
    Any

  4. final def asInstanceOf[T0]: T0

    Definition Classes
    Any

  5. def combineAll(as: TraversableOnce[A]): A

    Given a sequence of as, sum them using the monoid and return the total.

    Given a sequence of as, sum them using the monoid and return the total.

    Definition Classes
    Monoid

  6. def combineAllOption(as: TraversableOnce[A]): Option[A]

    Given a sequence of as, combine them and return the total.

    Given a sequence of as, combine them and return the total.

    If the sequence is empty, returns None. Otherwise, returns Some(total).

    Definition Classes
    Monoid → Semigroup

  7. def combineN(a: A, n: Int): A

    Return a appended to itself n times.

    Return a appended to itself n times.

    Definition Classes
    Monoid → Semigroup

  8. def equals(arg0: Any): Boolean

    Definition Classes
    Any

  9. def hashCode(): Int

    Definition Classes
    Any

  10. def isEmpty(a: A)(implicit ev: Eq[A]): Boolean

    Tests if a is the identity.

    Tests if a is the identity.

    Definition Classes
    Monoid

  11. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  12. def repeatedCombineN(a: A, n: Int): A

    Return a combined with itself more than once.

    Return a combined with itself more than once.

    Attributes
    protected[this]
    Definition Classes
    Semigroup

  13. def toString(): String

    Definition Classes
    Any

Inherited from CommutativeSemigroup[A]

Inherited from Monoid[A]

Inherited from Semigroup[A]

Inherited from Serializable

Inherited from Serializable

Inherited from Any

Ungrouped