FunctorUsage

A Functor is a ubiquitous typeclass involving type constructors of kind * → *, which is another way of saying types that have a single type variable. Examples might be Option, List, Future.

The Functor category involves a single operation, named map:

def map[A, B](fa: F[A])(f: A => B): F[B]

This method takes a Function from A => B and turns an F[A] into an F[B]

Source: FunctorUsage.scala

Linear Supertypes

App, DelayedInit, AnyRef, Any

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 args: Array[String]

Attributes
protected
Definition Classes
App
Annotations
@deprecatedOverriding( "args should not be overridden" , "2.11.0" )
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
var database: Map[String, Int]
def del(f: (String) ⇒ Boolean): Task[Int]
val delTask: Task[Int]
final def eq(arg0: AnyRef): Boolean

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

Definition Classes
AnyRef → Any
val executionStart: Long

Definition Classes
App
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
val len: (String) ⇒ Int
val lenOption: (Option[String]) ⇒ Option[Int]
val listOpt: Functor[[α]List[Option[α]]]
def main(args: Array[String]): Unit

Definition Classes
App
Annotations
@deprecatedOverriding( "main should not be overridden" , "2.11.0" )
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
val result: Map[String, Int]
val source: List[String]
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
val voidTask: Task[Unit]
val voidTask2: Task[Unit]
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( ... )

Deprecated Value Members

def delayedInit(body: ⇒ Unit): Unit

Definition Classes
App → DelayedInit
Annotations
@deprecated
Deprecated
(Since version 2.11.0) The delayedInit mechanism will disappear.

Related Doc: package example

object FunctorUsage extends App

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

def args: Array[String]

final def asInstanceOf[T0]: T0

def clone(): AnyRef

var database: Map[String, Int]

def del(f: (String) ⇒ Boolean): Task[Int]

val delTask: Task[Int]

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

val executionStart: Long

def finalize(): Unit

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

val len: (String) ⇒ Int

val lenOption: (Option[String]) ⇒ Option[Int]

val listOpt: Functor[[α]List[Option[α]]]

def main(args: Array[String]): Unit

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

val result: Map[String, Int]

val source: List[String]

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

def toString(): String

val voidTask: Task[Unit]

val voidTask2: Task[Unit]

final def wait(): Unit

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

final def wait(arg0: Long): Unit

Deprecated Value Members

def delayedInit(body: ⇒ Unit): Unit

Inherited from App

Inherited from DelayedInit

Inherited from AnyRef

Inherited from Any

Ungrouped