## Struct template output_visitor

boost::log::tuple_manipulator::output_visitor

## Synopsis

    // In header: <boost/log/utility/manipulators/tuple.hpp>

    template<typename StreamT>
    struct output_visitor {
      // types
      typedef boost::true_type result_type;

      // construct/copy/destruct
      output_visitor(StreamT &, stored_delimiter_type) noexcept;

      // public member functions
      template<typename T>
        result_type operator()(boost::true_type, T const &) const;
      template<typename T>
        result_type operator()(boost::false_type, T const &) const;
    };

## Description

### `output_visitor` public construct/copy/destruct

1.     output_visitor(StreamT & stream, stored_delimiter_type delimiter) noexcept;

### `output_visitor` public member functions

1.     template<typename T>
         result_type operator()(boost::true_type, T const & elem) const;

2.     template<typename T>
         result_type operator()(boost::false_type, T const & elem) const;