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	template <typename B1, typename... Bn>			template <typename B1, typename... Bn>
	struct conjunction<B1, Bn...>			struct conjunction<B1, Bn...>
	: std::conditional<bool(B1::value), conjunction<Bn...>, B1>::type {};			: std::conditional<bool(B1::value), conjunction<Bn...>, B1>::type {};

	template <typename T> struct make_const_ptr {			template <typename T> struct make_const_ptr {
	using type =			using type =
	typename std::add_pointer<typename std::add_const<T>::type>::type;			typename std::add_pointer<typename std::add_const<T>::type>::type;
	};			};

				template <typename T> struct make_const_ref {
				using type = typename std::add_lvalue_reference<
				typename std::add_const<T>::type>::type;
				};

	//===----------------------------------------------------------------------===//			//===----------------------------------------------------------------------===//
	// Extra additions to <functional>			// Extra additions to <functional>
	//===----------------------------------------------------------------------===//			//===----------------------------------------------------------------------===//

	template <class Ty> struct identity {			template <class Ty> struct identity {
	using argument_type = Ty;			using argument_type = Ty;

	Ty &operator()(Ty &self) const {			Ty &operator()(Ty &self) const {
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[Algorithm] Add make_const_ref corresponding to make_const_ptrClosedPublic