malzzz

## Java
sudo apt-get update
sudo apt-get install default-jdk

## Scala
sudo apt-get remove scala-library scala
sudo wget https://downloads.lightbend.com/scala/2.12.3/scala-2.12.3.deb
sudo dpkg -i scala-2.12.3.deb
sudo apt-get update
sudo apt-get install scala

malzzz

import scala.concurrent.duration._
import scala.concurrent.ExecutionContext
import scala.concurrent.Future
import akka.pattern.after
import akka.actor.Scheduler

/**
 * Given an operation that produces a T, returns a Future containing the result of T, unless an exception is thrown,
 * in which case the operation will be retried after _delay_ time, if there are more possible retries, which is configured through
 * the _retries_ parameter. If the operation does not succeed and there is no retries left, the resulting Future will contain the last failure.

malzzz

//Warning: Uses Akka internal APIs (not binary compatible),
//can be written not to depend on that but implemented like this for brevity.

package akka.util

trait CallbackExecutionContext { this: akka.actor.Actor ⇒
  // Defines our signal for callback execution
  case object Execute
  // ``SerializedSuspendableExecutionContext`` is Akka-internal
  private[this] final val ssec: SerializedSuspendableExecutionContext = {