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## Struct template unordered_map_index_aux

boost::interprocess::unordered_map_index_aux

## Synopsis

    // In header: <boost/interprocess/indexes/unordered_map_index.hpp>

    template<typename MapConfig>
    struct unordered_map_index_aux {
      // types
      typedef MapConfig::key_type                                                           key_type;
      typedef MapConfig::mapped_type                                                        mapped_type;
      typedef std::equal_to< key_type >                                                     key_equal;
      typedef std::pair< const key_type, mapped_type >                                      value_type;
      typedef private_adaptive_pool< value_type, typename MapConfig::segment_manager_base > allocator_type;
      typedef unordered_map< key_type, mapped_type, hasher, key_equal, allocator_type >     index_t;

      // member classes/structs/unions

      struct hasher {

        // public member functions
        std::size_t operator()(const key_type &) const;
      };
    };

## Description

@ Helper class to define typedefs from IndexTraits