akhilvijayan05

  import cats.implicits._

  val listValue: List[Option[Int]] = List(35.some, 45.some, 55.some))

  val result: Option[List[Int]] = listValue.flatTraverse(_.map(x=>List(x)))

akhilvijayan05

  import cats.data.EitherT
  import cats.syntax.either._

  val eitherValue: Either[Boolean, Int] = 35.asRight[Boolean]
  val futureEitherValue: Future[Either[Boolean, Int]] = Future(eitherValue)
  val eitherTValue: EitherT[Future, Boolean, Int] = EitherT(futureEitherValue)
  val extractedFutureValue: Future[Either[Boolean, Int]] = eitherTValue.value

akhilvijayan05

  import cats.data.OptionT

  val futureValue: Future[Option[Int]] = Future(Option(23))
  val optionTValue: OptionT[Future, Int] = OptionT(futureValue)
  val extractedFutureValue: Future[Option[Int]] = optionTValue.value

akhilvijayan05

  import cats.syntax.traverse._
  import cats.instances.future._
  import cats.syntax.option._
  import cats.instances.option._

  val optionalValue: Option[Int] = 35.some

  val finalResult: Future[Option[Int]] = optionalValue.traverse(value => Future(value + 1))

akhilvijayan05

  import cats.instances.future._
  import cats.syntax.cartesian._


  val addFutureValue = Future(2 + 1)
  val multiplyFutureValue = Future(2 * 1)
  val substractFutureValue = Future(2 - 1)

  val result: Future[Int] = (addFutureValue |@| multiplyFutureValue |@| substractFutureValue).map{ (addedValue, multipiedValue, substractedValue) =>
    addedValue + multipiedValue + substractedValue

akhilvijayan05

  import cats.syntax.either._

  val eitherRightValue: Either[Boolean, Int] = 35.asRight[Boolean]
  val eitherLeftValue: Either[Int, Boolean] = 35.asLeft[Boolean]

akhilvijayan05

  import cats.syntax.option._

  val optionValue: Option[Int] = 35.some
  val noneValue: Option[Int] = none[Int]

akhilvijayan05

import akka.actor.Props
import akka.persistence.{PersistentActor, SnapshotOffer}
import com.knoldus.models._
import com.knoldus.persistence.CounterPersistentActor.Response

class CounterPersistentActor(id: String) extends PersistentActor {

  override val persistenceId: String = id
  var state = State(count = 0)

akhilvijayan05

<SOW>
  <Topic>
     <Name>sow-topic</Name>
     <FileName>sow/%n.sow</FileName>
     <Expiration>enabled</Expiration>
     <Key>/id</Key>
     <MessageType>json</MessageType>
  </Topic>
</SOW>

akhilvijayan05

import com.crankuptheamps.client.Client;
import com.crankuptheamps.client.exception.AMPSException;
import scala.collection.JavaConverters._

object Subscriber extends App {

  val client = new Client("subscribe")

  try {
    client.connect("tcp://127.0.0.1:9007/amps/json")