hphp/hack/test/typecheck/printf2.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 interface FormatString<T> { }
  13 interface X { }
  14
  15 function f(FormatString<X> $fs, mixed...$args) : void {
  16 }
  17
  18 function _(string $s) {
  19   f("hello {$s} world", $s);
  20 }