Yoneda

The cofree functor generated by F. The Yoneda lemma says that Yoneda[F,A] is isomorphic to F[A] for any functor F. The homomorphism from Yoneda[F,A] to F[A] exists even when we have forgotten that F is a functor. Can be seen as a partially applied map for the functor F.

Self Type: Yoneda[F, A]
Source: Yoneda.scala

Linear Supertypes

AnyRef, Any

Instance Constructors

new Yoneda()

Abstract Value Members

abstract def apply[B](f: (A) ⇒ B): F[B]

Concrete Value Members

final def !=(arg0: Any): Boolean

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

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

Definition Classes
AnyRef → Any
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
final def eq(arg0: AnyRef): Boolean

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

Definition Classes
AnyRef → Any
def extend[G[_]](f: ~>[[β$0$]Yoneda[F, β$0$], G])(implicit arg0: Functor[G]): Yoneda[G, A]

Yoneda is a comonad in an endofunctor category
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
def flatMap[G[_]](f: ~>[F, [β$1$]Yoneda[G, β$1$]]): Yoneda[G, A]

Yoneda is a monad in an endofunctor category
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
def hashCode(): Int

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

Definition Classes
Any
def map[B](f: (A) ⇒ B): Yoneda[F, B]

Simple function composition.
Simple function composition. Allows map fusion without traversing an F.
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
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final def notifyAll(): Unit

Definition Classes
AnyRef
def run: F[A]

Converts to F[A] even without a Functor instance for F
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toCoyoneda: Aux[F, A, A]

Converts to Coyoneda[F,A] even without a Functor instance for F
def toRan: Ran[Id.Id, F, A]

Yoneda[F, _] is the right Kan extension of F along Id
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 Yoneda | package scalaz

abstract class Yoneda[F[_], A] extends AnyRef

Instance Constructors

new Yoneda()

Abstract Value Members

abstract def apply[B](f: (A) ⇒ B): F[B]

Concrete Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def extend[G[_]](f: ~>[[β$0$]Yoneda[F, β$0$], G])(implicit arg0: Functor[G]): Yoneda[G, A]

def finalize(): Unit

def flatMap[G[_]](f: ~>[F, [β$1$]Yoneda[G, β$1$]]): Yoneda[G, A]

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

def map[B](f: (A) ⇒ B): Yoneda[F, B]

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

def run: F[A]

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

def toCoyoneda: Aux[F, A, A]

def toRan: Ran[Id.Id, F, A]

def toString(): String

final def wait(): Unit

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

final def wait(arg0: Long): Unit

Inherited from AnyRef

Inherited from Any

Ungrouped