private static function isDiffable()

in src/Assert.hack [18:31]

• 14 lines of code
• 6 McCabe index (conditional complexity)

  private static function isDiffable(mixed $x): bool {
    if ($x is bool || $x is arraykey) {
      return true;
    }
    if ($x is Container<_>) {
      foreach ($x as $elem) {
        if (!self::isDiffable($elem)) {
          return false;
        }
      }
      return true;
    }
    return false;
  }