scala

trait Function2

[source: scala/Function2.scala]

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

Function with 2 parameters.

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

  object Main extends Application {

    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
    }

    Console.println(max(0, 1))
    Console.println(anonfun2(0, 1))
  }
Method Summary
abstract def apply (v1 : T1, v2 : T2) : R
override def toString : String
Methods inherited from AnyRef
getClass, hashCode, equals, clone, notify, notifyAll, wait, wait, wait, finalize, ==, !=, eq, ne, synchronized
Methods inherited from Any
==, !=, isInstanceOf, asInstanceOf
Method Details
abstract def apply(v1 : T1, v2 : T2) : R

override def toString : String