Teach the typechecker to understand Map appends

[hiphop-php.git] / hphp / hack / test / more_tests / map_append1.php

<?hh // strict

function foo(Map<string, int> $m, Pair<string, int> $p): Map<string, int> {
  $m[] = $p;
  $m[] = Pair {'hello', 123};
  return $m;
}