Some nice tricks with single abstract method interface, Scala 2.11+

SingleAbstractMethodSyntax.scala

object SingleAbstractMethodSyntax extends App{

  // Some nice tricks with single abstract method interface, Scala 2.11+

  trait DoIt{
    def doSomething(x:Int): Int
  }
  // I am creating an instance of DoIt, and supplying doSomething
  val doit: DoIt= _+1

  println(doit.doSomething(10))

  trait DoIt2{
    def concrete=123
    def apply(x:Int): Int
  }
  // I am creating an instance of DoI2t, and supplying apply. Note we only have 1 undefined member, apply
  val doit2: DoIt2= _+2

  println(doit2(10))
  println(doit2.concrete)

  // Note, Runnable is also a single method interface, def run(): Unit, so we can say

  val newthread=new Thread(()=> println(s"Hello from ${Thread.currentThread}"))
  newthread.setName("newthread")

  newthread.start()

  newthread.join()
}