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## Struct push_back

boost::proto::functional::push_back — A PolymorphicFunctionObject type that invokes the `fusion::push_back()` algorithm on its arguments.

## Synopsis

    // In header: <boost/proto/functional/fusion/push_back.hpp>

    struct push_back :  proto::callable {
      // member classes/structs/unions
      template<typename This, typename Seq, typename T>
      struct result<This(Seq, T)> :  fusion::result_of::push_back<
          typename boost::add_const<typename boost::remove_reference<Seq>::type>::type
        , typename boost::remove_const<typename boost::remove_reference<T>::type>::type
      >
      {
      };

      // public member functions
      template<typename Seq, typename T>
        typename fusion::result_of::push_back< Seq const, T >::type
        operator()(Seq const &, T const &) const;
    };

## Description

A PolymorphicFunctionObject type that invokes the `fusion::push_back()` algorithm on its arguments.

### `push_back` public member functions

1.     template<typename Seq, typename T>
         typename fusion::result_of::push_back< Seq const, T >::type
         operator()(Seq const & seq, T const & t) const;

   Returns: | `fusion::push_back(seq, t)`