SemigroupK

SemigroupK is a universal semigroup which operates on kinds.

This type class is useful when its type parameter F[_] has a structure that can be combined for any particular type. Thus, SemigroupK is like a Semigroup for kinds (i.e. parameterized types).

A SemigroupK[F] can produce a Semigroup[F[A]] for any type A.

Here's how to distinguish Semigroup and SemigroupK:

Semigroup[A] allows two A values to be combined.
SemigroupK[F] allows two F[A] values to be combined, for any A. The combination operation just depends on the structure of F, but not the structure of A.

Self Type: SemigroupK[F]

Linear Supertypes

Serializable, Serializable, AnyRef, Any

Known Subclasses

Alternative, MonadCombine, MonoidK, ProdAlternative, ProdMonoidK, ProdSemigroupK

Abstract Value Members

abstract def combine[A](x: F[A], y: F[A]): F[A]

Combine two F[A] values.
Combine two F[A] values.

Annotations
@op( "<+>" , true )

Concrete Value Members

final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def algebra[A]: Semigroup[F[A]]

Given a type A, create a concrete Semigroup[F[A]].
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
def composedWith[G[_]](implicit arg0: SemigroupK[G]): SemigroupK[[α]F[G[α]]]

Compose two SemigroupK intsances.
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
def hashCode(): Int

Definition Classes
AnyRef → Any
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )

Related Docs: object SemigroupK | package cats

trait SemigroupK[F[_]] extends Serializable

Abstract Value Members

abstract def combine[A](x: F[A], y: F[A]): F[A]

Concrete Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

def algebra[A]: Semigroup[F[A]]

final def asInstanceOf[T0]: T0

def clone(): AnyRef

def composedWith[G[_]](implicit arg0: SemigroupK[G]): SemigroupK[[α]F[G[α]]]

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped