hphp/hack/test/typecheck/printf8.php

   1 <?hh // partial
   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 MyPlainSprintf {
  13   public function format_s<T>(T $s): string;
  14 }
  15
  16 function my_sprintf(HH\FormatString<MyPlainSprintf> $f, ...$_): string {
  17   return 'hi';
  18 }
  19
  20 function f() {
  21   my_sprintf('%s', 'hi');
  22   my_sprintf("%s", 'hi');
  23 }