constant.hpp

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#pragma once
#include <mpc/functional/partial.hpp>
 
namespace mpc {
  namespace detail {
    struct constant_op {
      template <class T, class U>
      constexpr auto operator()(T&& t, U&&) const //
        noexcept(noexcept(std::forward<T>(t)))    //
        -> decltype(std::forward<T>(t)) {
        return std::forward<T>(t);
      }
    };
  } // namespace detail
 
  inline namespace cpo {
    inline constexpr partial<detail::constant_op> constant;
  } // namespace cpo
} // namespace mpc