Andrey Semashev

22.04.2007

The header contains implementation of a filter that checks presence of an attribute in a log record.

namespace boost {
  namespace log {
    namespace filters {
      template<typename CharT, typename AttributeValueTypesT = void> 
        class flt_has_attr;

      template<typename CharT> class flt_has_attr<CharT, void>;
      flt_has_attr< char > has_attr(std::basic_string< char > const &);
      flt_has_attr< wchar_t > has_attr(std::basic_string< wchar_t > const &);
    }
  }
}