hphp/hack/test/typecheck/gen1.php

   1 <?hh // strict
   2 /**
   3  * Copyright (c) 2014, Facebook, Inc.
   4  * All rights reserved.
   5  *
   6  * This source code is licensed under the BSD-style license found in the
   7  * LICENSE file in the "hack" directory of this source tree. An additional grant
   8  * of patent rights can be found in the PATENTS file in the same directory.
   9  *
  10  */
  11
  12 class A {
  13 }
  14
  15 class B {
  16 }
  17
  18 function foo<T as A>(T $x): T {
  19   return $x;
  20 }
  21
  22 function foo2<T as B>(T $x): void {
  23   foo($x);
  24 }