Gajus\Vlad\Validator\In::__construct PHP Method

    public function __construct(array $options = [])
    {
        parent::__construct($options);
        $options = $this->getOptions();
        if (!isset($options['haystack'])) {
            throw new \Gajus\Vlad\Exception\InvalidArgumentException('"haystack" option is missing.');
        } else {
            if (!is_array($options['haystack'])) {
                throw new \Gajus\Vlad\Exception\InvalidArgumentException('"haystack" option must be an array.');
            }
        }
        if (!is_bool($options['strict']) || !is_bool($options['c14n'])) {
            throw new \Gajus\Vlad\Exception\InvalidArgumentException('Boolean property assigned non-boolean value.');
        }
    }