Method empty

plugins/cachekey/pattern.cc:130–134

* @brief Checks if the pattern object was initialized with a meaningful regex pattern. * @return true if initialized, false if not. */

 * @return true if initialized, false if not.
 */
bool
Pattern::empty() const
{
  return _pattern.empty() || nullptr == _re;
}

/**
 * @brief Frees PCRE library related resources.