Function2

A function of 2 parameters.

In the following example, the definition of max is a shorthand for the anonymous class definition anonfun2:

 object Main extends App {
   val max = (x: Int, y: Int) => if (x < y) y else x

   val anonfun2 = new Function2[Int, Int, Int] {
     def apply(x: Int, y: Int): Int = if (x < y) y else x
   }
   assert(max(0, 1) == anonfun2(0, 1))
}

Self Type: (T1, T2) ⇒ R

Linear Supertypes

AnyRef, Any

Known Subclasses

AbstractFunction2

Abstract Value Members

abstract def apply(v1: T1, v2: T2): R

Apply the body of this function to the arguments.
Apply the body of this function to the arguments.
returns
the result of function application.

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 asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
def curried: (T1) ⇒ (T2) ⇒ R

Creates a curried version of this function.
Creates a curried version of this function.
returns
a function f such that f(x1)(x2) == apply(x1, x2)

Annotations
@unspecialized()
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
Function2 → AnyRef → Any
def tupled: ((T1, T2)) ⇒ R

Creates a tupled version of this function: instead of 2 arguments, it accepts a single scala.Tuple2 argument.
Creates a tupled version of this function: instead of 2 arguments, it accepts a single scala.Tuple2 argument.
returns
a function f such that f((x1, x2)) == f(Tuple2(x1, x2)) == apply(x1, x2)

Annotations
@unspecialized()
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 Doc: package scala

trait Function2[-T1, -T2, +R] extends AnyRef

Abstract Value Members

abstract def apply(v1: T1, v2: T2): R

Concrete Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def clone(): AnyRef

def curried: (T1) ⇒ (T2) ⇒ R

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

def tupled: ((T1, T2)) ⇒ R

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