Scala Reactive Programming

The complete Scala Future API

Almost all Future functions contain ExecutionContext as implicit parameters:

object Future{  def apply[T](body: => T)(implicit executor: ExecutionContext): Future[T]}trait Future[+T] extends Awaitable[T]{  def map[S](f: T => S)(implicit executor: ExecutionContext) :Future[S]  def flatMap[S](f: T => Future[S])(implicit executor:    ExecutionContext) :Future[S]}

Here, the executor is an implicit parameter; we don't need to specify it.