marccarre

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;

public class AsynchronousExceptionsHandlingWithExceptionally {
    public static void main(final String[] args) throws InterruptedException, ExecutionException {
        for (final boolean failure : new boolean[]{false, true}) {

            CompletableFuture<Integer> x = CompletableFuture.supplyAsync(() -> {
                if (failure) {
                    throw new RuntimeException("Oops, something went wrong");

marccarre

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;

public class AsynchronousExceptions {
    public static void main(final String[] args) throws InterruptedException {
        for (final boolean failure : new boolean[]{false, true}) {

            CompletableFuture<Integer> x = CompletableFuture.supplyAsync(() -> {
                if (failure) {
                    throw new RuntimeException("Oops, something went wrong");

marccarre

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import static java.util.concurrent.TimeUnit.SECONDS;

public class SynchronousVsAsynchronous {
    public static void main(final String[] args) {
        stopwatch(() -> {
            // Synchronous:
            int x1 = compute(1);

marccarre

import scala.util.Random

def winningCombinationsFor(max: Int = 49, numDrawn: Int = 6, minNumToWin: Int = 3): Seq[Set[Int]] = {
  val (draw, remainder) = Random.shuffle(1 to max).splitAt(numDrawn)
  for {
    numPickedFromDraw <- minNumToWin to numDrawn
    subsetFromDraw <- draw.toSet.subsets(numPickedFromDraw)
    subsetFromRemainder <- remainder.toSet.subsets(numDrawn - numPickedFromDraw)
  } yield subsetFromDraw ++ subsetFromRemainder
}