private function isPHPEmpty()

in src/Assert.hack [214:222]


  private function isPHPEmpty(mixed $v): bool {
    return $v === '' ||
      $v === 0 ||
      $v === 0.0 ||
      $v === '0' ||
      $v === null ||
      $v === false ||
      ($v is Container<_> && C\is_empty($v));
  }