hphp/hack/test/typecheck/init_closure.php

   1 <?hh // strict
   2 /**
   3  * Copyright (c) 2014, Facebook, Inc.
   4  * All rights reserved.
   5  *
   6  * This source code is licensed under the MIT license found in the
   7  * LICENSE file in the "hack" directory of this source tree.
   8  *
   9  *
  10  */
  11
  12 class Bar {
  13   public static function hey((function(): Bar) $cb): Bar {
  14     return $cb();
  15   }
  16 }
  17
  18 class Foo {
  19   private Bar $a, $b;
  20   public function __construct() {
  21     $this->a = Bar::hey(function() { return new Bar(); });
  22     $this->b = Bar::hey(function() { return new Bar(); });
  23   }
  24 }