As - cats.evidence.As

As substitutability: A better <:<

This class exists to aid in the capture proof of subtyping relationships, which can be applied in other context to widen other type

A As B holds whenever A could be used in any negative context that expects a B. (e.g. if you could pass an A into any function that expects a B as input.)

This code was ported directly from scalaz to cats using this version from scalaz: https://github.com/scalaz/scalaz/blob/a89b6d63/core/src/main/scala/scalaz/As.scala

The original contribution to scalaz came from Jason Zaugg

Linear Supertypes

Serializable, Serializable, AnyRef, Any

Abstract Value Members

abstract def substitute[F[-_]](p: F[B]): F[A]

Use this subtyping relationship to replace B with a value of type A in a contravariant context.
Use this subtyping relationship to replace B with a value of type A in a contravariant context. This would commonly be the input to a function, such as F in: type F[-B] = B => String. In this case, we could use A As B to turn an F[B] Into F[A].

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
final def andThen[C](that: As[B, C]): As[A, C]

Annotations
@inline()
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
final def coerce(a: A): B

Annotations
@inline()
final def compose[C](that: As[C, A]): As[C, B]

Annotations
@inline()
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( ... )

As

Related Docs: object As | package evidence

sealed abstract class As[-A, +B] extends Serializable

Abstract Value Members

abstract def substitute[F[-_]](p: F[B]): F[A]

Concrete Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

final def andThen[C](that: As[B, C]): As[A, C]

final def asInstanceOf[T0]: T0

def clone(): AnyRef

final def coerce(a: A): B

final def compose[C](that: As[C, A]): As[C, B]

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