Applicative Builder at work

applicativebuilder.scala

scala> import scalaz._, Scalaz._
import scalaz._
import Scalaz._

scala> import scala.concurrent.Future
import scala.concurrent.Future

scala> import scala.concurrent.ExecutionContext.Implicits.global
import scala.concurrent.ExecutionContext.Implicits.global

scala> (Future(1) |@| Future(2) |@| Future(3)){
     | (x,y,z) => x + y + z
     | }
res1: scala.concurrent.Future[Int] = scala.concurrent.impl.Promise$DefaultPromise@12f00066

scala> (Future(1) |@| Future(2) ){
     | (x,y) => x + y
     | }
res2: scala.concurrent.Future[Int] = scala.concurrent.impl.Promise$DefaultPromise@6aea1830

scala> (Future(1) |@| Future("2") ){
     | (x,y) => x.toString + y
     | }
res3: scala.concurrent.Future[String] = scala.concurrent.impl.Promise$DefaultPromise@7b515368