<?hh
/**
 * Copyright (c) 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the "hack" directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 */

function get_nullable(): ?int {
  return null;
}

function get_int(): int {
  $x = get_nullable();
  if (isset($x)) {
    return $x;
  } else {
    return 0;
  }
}
