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Filename : null_output_iterator.hpp

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/*
  An output iterator which simply discards output.
*/
// Copyright Frank Mori Hess 2008.
// Distributed under the Boost Software License, Version
// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)

// See http://www.boost.org/libs/signals2 for library home page.

#ifndef BOOST_SIGNALS2_NULL_OUTPUT_ITERATOR_HPP
#define BOOST_SIGNALS2_NULL_OUTPUT_ITERATOR_HPP

#include <boost/iterator/function_output_iterator.hpp>

namespace boost
{
  namespace signals2
  {
    namespace detail
    {
      class does_nothing
      {
      public:
        template<typename T>
          void operator()(const T&) const
          {}
      };
      typedef boost::function_output_iterator<does_nothing> null_output_iterator;
    } // namespace detail
  } // namespace signals2
} // namespace boost

#endif  // BOOST_SIGNALS2_NULL_OUTPUT_ITERATOR_HPP