Method emplace

extern/boost/boost/container/vector.hpp:1859–1866

   //!   Linear time otherwise.
   template<class ...Args>
   BOOST_CONTAINER_FORCEINLINE iterator emplace(const_iterator position, BOOST_FWD_REF(Args) ...args)
   {
      BOOST_ASSERT(this->priv_in_range_or_end(position));
      //Just call more general insert(pos, size, value) and return iterator
      typedef dtl::insert_emplace_proxy<allocator_type, T*, Args...> proxy_t;
      return this->priv_insert_forward_range( vector_iterator_get_ptr(position), 1
                                            , proxy_t(::boost::forward<Args>(args)...));
   }

   #else // !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)