Concurnas

def gcd(x int, y int) int {
  while(y) {
    x, y = y, x mod y
  }
  x
}

def factorial(i int) int {
  match(i) {
    0 => 1
    n => n * factorial(n - 1)
  }
}

// Concurrent GCD computations using isolates
calc1 = gcd(8, 20)!
calc2 = gcd(6, 45)!

// Pick the larger GCD result
calc3 = calc1 if calc1 > calc2 else calc2

// Compute factorials in parallel
results = parfor(b in 0 to 10) {
  factorial(b)
}

// Actor for thread-safe counting
actor Counter {
  -count = 0
  def increment() {
    count++
  }
  def getCount() => count
}

counter = new Counter()
sync {
  {counter.increment()}!
  {counter.increment()}!
  {counter.increment()}!
}

System.out.println("GCD result: " + calc3)
System.out.println("Factorials: " + results)
System.out.println("Counter: " + counter.getCount())