jakubjanecek

val sum = collectionOfNumbers.sum

jakubjanecek

int sum = 0;
for (int n : collectionOfNumbers) {
    sum += n;
}

jakubjanecek

def txn(block: => Unit): Unit = {
  val transaction = new Transaction

  try {
    transaction.begin()

    block

    transaction.commit()
  }

jakubjanecek

txn {
  println("I am in transaction, safe and sound!")
}

jakubjanecek

Transaction t1 = new Transaction();
t1.begin();
try {
    System.out.println("I am in transaction, safe and sound!");
    t1.commit();
} catch (Exception ex) {
    t1.rollback();
}