ceph/src/boost/boost/signals2/detail/null_output_iterator.hpp

   1 /*
   2   An output iterator which simply discards output.
   3 */
   4 // Copyright Frank Mori Hess 2008.
   5 // Distributed under the Boost Software License, Version
   6 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt)
   8
   9 // See http://www.boost.org/libs/signals2 for library home page.
  10
  11 #ifndef BOOST_SIGNALS2_NULL_OUTPUT_ITERATOR_HPP
  12 #define BOOST_SIGNALS2_NULL_OUTPUT_ITERATOR_HPP
  13
  14 #include <boost/function_output_iterator.hpp>
  15
  16 namespace boost
  17 {
  18   namespace signals2
  19   {
  20     namespace detail
  21     {
  22       class does_nothing
  23       {
  24       public:
  25         template<typename T>
  26           void operator()(const T&) const
  27           {}
  28       };
  29       typedef boost::function_output_iterator<does_nothing> null_output_iterator;
  30     } // namespace detail
  31   } // namespace signals2
  32 } // namespace boost
  33
  34 #endif  // BOOST_SIGNALS2_NULL_OUTPUT_ITERATOR_HPP