wlk

import akka.actor.SupervisorStrategy.Restart
import akka.actor.{Actor, ActorInitializationException, ActorSystem, OneForOneStrategy, Props}

object Main extends App {
  var attempt: Int = 0

  class FailingActor extends Actor {

    if (attempt == 0) {
      // throw exception only for the first time, simulating first attempt to create an actor that fails

wlk

{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "id": "uuid-schema",
  "description": "Validation for UUID",
  "type": "string",
  "pattern": "^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$"
}

wlk

case class Author(id: UUID, name: String, dateOfBirth: DateTime, dateOfDeath: Option[DateTime], createdAt: DateTime, updatedAt: DateTime)

def toJsonapi(author: Author) = {
  ResourceObject(
     `type` = author.`type`,
     id = Some(author.id),
     attributes = authorAttributes(author),
     relationships = authorRelationships(author),
     links = List(Links.Self(selfLink(author))
   )

wlk

{
    "data": {
        "id": "1",
        "type": "authors",
        "attributes": {
            "name": "J. R. R. Tolkien",
            "date_of_birth": "1892-01-03",
            "date_of_death": "1973-09-02",
            "created_at": "2017-06-18 11:30:16",
            "updated_at": "2017-06-18 11:30:16"

wlk

{
    "data": {
        "id": "1",
        "type": "authors",
        "attributes": {
            "name": "J. R. R. Tolkien",
            "date_of_birth": "1892-01-03",
            "date_of_death": "1973-09-02",
            "created_at": "2017-06-18 11:30:16",
            "updated_at": "2017-06-18 11:30:16"

wlk

{
    "data": {
        "id": "1",
        "type": "chapters",
        "attributes": {
            "title": "A Long-expected Party",
            "ordering": 1,
            "created_at": "2017-06-18 11:30:17",
            "updated_at": "2017-06-18 11:30:17"
        },

wlk

{
    "data": {
        "id": "1",
        "type": "books",
        "attributes": {
            "date_published": "1954-07-29",
            "title": "The Fellowship of the Ring",
            "created_at": "2017-06-18 11:30:16",
            "updated_at": "2017-06-18 11:30:16"
        },

wlk

{
    "data": {
        "id": "1",
        "type": "authors",
        "attributes": {
            "name": "J. R. R. Tolkien",
            "date_of_birth": "1892-01-03",
            "date_of_death": "1973-09-02",
            "created_at": "2017-06-18 11:30:16",
            "updated_at": "2017-06-18 11:30:16"

wlk

package uk.co.real_logic;

import static java.lang.System.out;

/*
Original exercise did during "Lock Free Workshop" by Martin Thompson: http://www.real-logic.co.uk/training.html
 */
public final class PingPong {
    private static final int REPETITIONS = 100_000_000;

wlk

import scala.util.Random

object Suit extends Enumeration {
  val Clubs, Spades, Hearts, Diamonds = Value
}

object Rank extends Enumeration {
  val Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King, Ace = Value
}