Is there no longer a need for num_rows()?

Looking at CI4 and working with databases I can't find a way to get the number of rows returned from a query. 
In CI3 I often did:

PHP Code:

/** @var CI_DB_result $query */
$query = $this->db->get(TBL_INVITES);

if ($query->num_rows() !== 1)
{
    return FALSE;
}

/** Continue processing **/ 


Should I do like this in CI4 or is there a better way?

PHP Code:

if (count($query->getResultArray()) !== 1)
{
    return false;
}