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## Struct make_pair

boost::proto::functional::make_pair — A PolymorphicFunctionObject type that invokes `std::make_pair()` on its arguments.

## Synopsis

    // In header: <boost/proto/functional/std/utility.hpp>

    struct make_pair :  proto::callable {
      // member classes/structs/unions
      template<typename This, typename First, typename Second>
      struct result<This(First, Second)> {
        // types
        typedef std::pair<
            typename boost::remove_const<typename boost::remove_reference<First>::type>::type
          , typename boost::remove_const<typename boost::remove_reference<Second>::type>::type
        > type;
      };

      // public member functions
      template<typename First, typename Second>
        typename std::pair< First, Second >
        operator()(First const &, Second const &) const;
    };

## Description

A PolymorphicFunctionObject type that invokes `std::make_pair()` on its arguments.

### `make_pair` public member functions

1.     template<typename First, typename Second>
         typename std::pair< First, Second >
         operator()(First const & first, Second const & second) const;

   Returns: | `std::make_pair(first, second)`