Cider Isn't Darwin Emulation, Really
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-*- C++ -*-//===------------------------ functional ----------------------------------===////// The LLVM Compiler Infrastructure//// This file is dual licensed under the MIT and the University of Illinois Open// Source Licenses. See LICENSE.TXT for details.////===----------------------------------------------------------------------===//#ifndef _LIBCPP_FUNCTIONAL#define _LIBCPP_FUNCTIONAL/* functional synopsisnamespace std{template <class Arg, class Result>struct unary_function{ typedef Arg argument_type; typedef Result result_type;};template <class Arg1, class Arg2, class Result>struct binary_function{ typedef Arg1 first_argument_type; typedef Arg2 second_argument_type; typedef Result result_type;};template <class T>class reference_wrapper : public unary_function<T1, R> // if wrapping a unary functor : public binary_function<T1, T2, R> // if wraping a binary functor{public: // types typedef T type; typedef see below result_type; // Not always defined // construct/copy/destroy reference_wrapper(T&) noexcept; reference_wrapper(T&&) = delete; // do not bind to temps reference_wrapper(const reference_wrapper<T>& x) noexcept; // assignment reference_wrapper& operator=(const reference_wrapper<T>& x) noexcept; // access operator T& () const noexcept; T& get() const noexcept; // invoke template <class... ArgTypes> typename result_of<T&(ArgTypes&&...)>::type operator() (ArgTypes&&...) const;};template <class T> reference_wrapper<T> ref(T& t) noexcept;template <class T> void ref(const T&& t) = delete;template <class T> reference_wrapper<T> ref(reference_wrapper<T>t) noexcept;template <class T> reference_wrapper<const T> cref(const T& t) noexcept;template <class T> void cref(const T&& t) = delete;template <class T> reference_wrapper<const T> cref(reference_wrapper<T> t) noexcept;template <class T> // <class T=void> in C++14struct plus : binary_function<T, T, T>{ T operator()(const T& x, const T& y) const;};template <class T> // <class T=void> in C++14struct minus : binary_function<T, T, T>{ T operator()(const T& x, const T& y) const;};template <class T> // <class T=void> in C++14struct multiplies : binary_function<T, T, T>{ T operator()(const T& x, const T& y) const;};template <class T> // <class T=void> in C++14struct divides : binary_function<T, T, T>{ T operator()(const T& x, const T& y) const;};template <class T> // <class T=void> in C++14struct modulus : binary_function<T, T, T>{ T operator()(const T& x, const T& y) const;};template <class T> // <class T=void> in C++14struct negate : unary_function<T, T>{ T operator()(const T& x) const;};template <class T> // <class T=void> in C++14struct equal_to : binary_function<T, T, bool>{ bool operator()(const T& x, const T& y) const;};template <class T> // <class T=void> in C++14struct not_equal_to : binary_function<T, T, bool>{ bool operator()(const T& x, const T& y) const;};template <class T> // <class T=void> in C++14struct greater : binary_function<T, T, bool>{ bool operator()(const T& x, const T& y) const;};template <class T> // <class T=void> in C++14struct less : binary_function<T, T, bool>{ bool operator()(const T& x, const T& y) const;};template <class T> // <class T=void> in C++14struct greater_equal : binary_function<T, T, bool>{ bool operator()(const T& x, const T& y) const;};template <class T> // <class T=void> in C++14struct less_equal : binary_function<T, T, bool>{ bool operator()(const T& x, const T& y) const;};template <class T> // <class T=void> in C++14struct logical_and : binary_function<T, T, bool>{ bool operator()(const T& x, const T& y) const;};template <class T> // <class T=void> in C++14struct logical_or : binary_function<T, T, bool>{ bool operator()(const T& x, const T& y) const;};template <class T> // <class T=void> in C++14struct logical_not : unary_function<T, bool>{ bool operator()(const T& x) const;};template <class T> // <class T=void> in C++14struct bit_and : unary_function<T, bool>{ bool operator()(const T& x, const T& y) const;};template <class T> // <class T=void> in C++14struct bit_or : unary_function<T, bool>{ bool operator()(const T& x, const T& y) const;};template <class T> // <class T=void> in C++14struct bit_xor : unary_function<T, bool>{ bool operator()(const T& x, const T& y) const;};template <class T=void> // C++14struct bit_xor : unary_function<T, bool>{ bool operator()(const T& x) const;};template <class Predicate>class unary_negate : public unary_function<typename Predicate::argument_type, bool>{public: explicit unary_negate(const Predicate& pred); bool operator()(const typename Predicate::argument_type& x) const;};template <class Predicate> unary_negate<Predicate> not1(const Predicate& pred);template <class Predicate>class binary_negate : public binary_function<typename Predicate::first_argument_type, typename Predicate::second_argument_type, bool>{public: explicit binary_negate(const Predicate& pred); bool operator()(const typename Predicate::first_argument_type& x, const typename Predicate::second_argument_type& y) const;};template <class Predicate> binary_negate<Predicate> not2(const Predicate& pred);template <class F> unspecified not_fn(F&& f); // C++17template<class T> struct is_bind_expression;template<class T> struct is_placeholder; // See C++14 20.9.9, Function object binderstemplate <class T> constexpr bool is_bind_expression_v = is_bind_expression<T>::value; // C++17template <class T> constexpr int is_placeholder_v = is_placeholder<T>::value; // C++17template<class Fn, class... BoundArgs> unspecified bind(Fn&&, BoundArgs&&...);template<class R, class Fn, class... BoundArgs> unspecified bind(Fn&&, BoundArgs&&...);namespace placeholders { // M is the implementation-defined number of placeholders extern unspecified _1; extern unspecified _2; . . . extern unspecified _Mp;}template <class Operation>class binder1st // deprecated in C++11, removed in C++17 : public unary_function<typename Operation::second_argument_type, typename Operation::result_type>{protected: Operation op; typename Operation::first_argument_type value;public: binder1st(const Operation& x, const typename Operation::first_argument_type y); typename Operation::result_type operator()( typename Operation::second_argument_type& x) const; typename Operation::result_type operator()(const typename Operation::second_argument_type& x) const;};template <class Operation, class T>binder1st<Operation> bind1st(const Operation& op, const T& x); // deprecated in C++11, removed in C++17template <class Operation>class binder2nd // deprecated in C++11, removed in C++17 : public unary_function<typename Operation::first_argument_type, typename Operation::result_type>{protected: Operation op; typename Operation::second_argument_type value;public: binder2nd(const Operation& x, const typename Operation::second_argument_type y); typename Operation::result_type operator()( typename Operation::first_argument_type& x) const; typename Operation::result_type operator()(const typename Operation::first_argument_type& x) const;};template <class Operation, class T>binder2nd<Operation> bind2nd(const Operation& op, const T& x); // deprecated in C++11, removed in C++17template <class Arg, class Result> // deprecated in C++11, removed in C++17class pointer_to_unary_function : public unary_function<Arg, Result>{public: explicit pointer_to_unary_function(Result (*f)(Arg)); Result operator()(Arg x) const;};template <class Arg, class Result>pointer_to_unary_function<Arg,Result> ptr_fun(Result (*f)(Arg)); // deprecated in C++11, removed in C++17template <class Arg1, class Arg2, class Result> // deprecated in C++11, removed in C++17class pointer_to_binary_function : public binary_function<Arg1, Arg2, Result>{public: explicit pointer_to_binary_function(Result (*f)(Arg1, Arg2)); Result operator()(Arg1 x, Arg2 y) const;};template <class Arg1, class Arg2, class Result>pointer_to_binary_function<Arg1,Arg2,Result> ptr_fun(Result (*f)(Arg1,Arg2)); // deprecated in C++11, removed in C++17template<class S, class T> // deprecated in C++11, removed in C++17class mem_fun_t : public unary_function<T*, S>{public: explicit mem_fun_t(S (T::*p)()); S operator()(T* p) const;};template<class S, class T, class A>class mem_fun1_t : public binary_function<T*, A, S> // deprecated in C++11, removed in C++17{public: explicit mem_fun1_t(S (T::*p)(A)); S operator()(T* p, A x) const;};template<class S, class T> mem_fun_t<S,T> mem_fun(S (T::*f)()); // deprecated in C++11, removed in C++17template<class S, class T, class A> mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A)); // deprecated in C++11, removed in C++17template<class S, class T>class mem_fun_ref_t : public unary_function<T, S> // deprecated in C++11, removed in C++17{public: explicit mem_fun_ref_t(S (T::*p)()); S operator()(T& p) const;};template<class S, class T, class A>class mem_fun1_ref_t : public binary_function<T, A, S> // deprecated in C++11, removed in C++17{public: explicit mem_fun1_ref_t(S (T::*p)(A)); S operator()(T& p, A x) const;};template<class S, class T> mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)()); // deprecated in C++11, removed in C++17template<class S, class T, class A> mem_fun1_ref_t<S,T,A> mem_fun_ref(S (T::*f)(A)); // deprecated in C++11, removed in C++17template <class S, class T>class const_mem_fun_t : public unary_function<const T*, S> // deprecated in C++11, removed in C++17{public: explicit const_mem_fun_t(S (T::*p)() const); S operator()(const T* p) const;};template <class S, class T, class A>class const_mem_fun1_t : public binary_function<const T*, A, S> // deprecated in C++11, removed in C++17{public: explicit const_mem_fun1_t(S (T::*p)(A) const); S operator()(const T* p, A x) const;};template <class S, class T> const_mem_fun_t<S,T> mem_fun(S (T::*f)() const); // deprecated in C++11, removed in C++17template <class S, class T, class A> const_mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A) const); // deprecated in C++11, removed in C++17template <class S, class T>class const_mem_fun_ref_t : public unary_function<T, S> // deprecated in C++11, removed in C++17{public: explicit const_mem_fun_ref_t(S (T::*p)() const); S operator()(const T& p) const;};template <class S, class T, class A>class const_mem_fun1_ref_t : public binary_function<T, A, S> // deprecated in C++11, removed in C++17{public: explicit const_mem_fun1_ref_t(S (T::*p)(A) const); S operator()(const T& p, A x) const;};template <class S, class T> const_mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)() const); // deprecated in C++11, removed in C++17template <class S, class T, class A> const_mem_fun1_ref_t<S,T,A> mem_fun_ref(S (T::*f)(A) const); // deprecated in C++11, removed in C++17template<class R, class T> unspecified mem_fn(R T::*);class bad_function_call : public exception{};template<class> class function; // undefinedtemplate<class R, class... ArgTypes>class function<R(ArgTypes...)> : public unary_function<T1, R> // iff sizeof...(ArgTypes) == 1 and // ArgTypes contains T1 : public binary_function<T1, T2, R> // iff sizeof...(ArgTypes) == 2 and // ArgTypes contains T1 and T2{public: typedef R result_type; // construct/copy/destroy: function() noexcept; function(nullptr_t) noexcept; function(const function&); function(function&&) noexcept; template<class F> function(F); template<Allocator Alloc> function(allocator_arg_t, const Alloc&) noexcept; // removed in C++17 template<Allocator Alloc> function(allocator_arg_t, const Alloc&, nullptr_t) noexcept; // removed in C++17 template<Allocator Alloc> function(allocator_arg_t, const Alloc&, const function&); // removed in C++17 template<Allocator Alloc> function(allocator_arg_t, const Alloc&, function&&); // removed in C++17 template<class F, Allocator Alloc> function(allocator_arg_t, const Alloc&, F); // removed in C++17 function& operator=(const function&); function& operator=(function&&) noexcept; function& operator=(nullptr_t) noexcept; template<class F> function& operator=(F&&); template<class F> function& operator=(reference_wrapper<F>) noexcept; ~function(); // function modifiers: void swap(function&) noexcept; template<class F, class Alloc> void assign(F&&, const Alloc&); // Removed in C++17 // function capacity: explicit operator bool() const noexcept; // function invocation: R operator()(ArgTypes...) const; // function target access: const std::type_info& target_type() const noexcept; template <typename T> T* target() noexcept; template <typename T> const T* target() const noexcept;};// Null pointer comparisons:template <class R, class ... ArgTypes> bool operator==(const function<R(ArgTypes...)>&, nullptr_t) noexcept;template <class R, class ... ArgTypes> bool operator==(nullptr_t, const function<R(ArgTypes...)>&) noexcept;template <class R, class ... ArgTypes> bool operator!=(const function<R(ArgTypes...)>&, nullptr_t) noexcept;template <class R, class ... ArgTypes> bool operator!=(nullptr_t, const function<R(ArgTypes...)>&) noexcept;// specialized algorithms:template <class R, class ... ArgTypes> void swap(function<R(ArgTypes...)>&, function<R(ArgTypes...)>&) noexcept;template <class T> struct hash;template <> struct hash<bool>;template <> struct hash<char>;template <> struct hash<signed char>;template <> struct hash<unsigned char>;template <> struct hash<char16_t>;template <> struct hash<char32_t>;template <> struct hash<wchar_t>;template <> struct hash<short>;template <> struct hash<unsigned short>;template <> struct hash<int>;template <> struct hash<unsigned int>;template <> struct hash<long>;template <> struct hash<long long>;template <> struct hash<unsigned long>;template <> struct hash<unsigned long long>;template <> struct hash<float>;template <> struct hash<double>;template <> struct hash<long double>;template<class T> struct hash<T*>;template <> struct hash<nullptr_t>; // C++17} // stdPOLICY: For non-variadic implementations, the number of arguments is limited to 3. It is hoped that the need for non-variadic implementations will be minimal.*/#include <__config>#include <type_traits>#include <typeinfo>#include <exception>#include <memory>#include <tuple>#include <utility>#include <__functional_base>#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)#pragma GCC system_header#endif_LIBCPP_BEGIN_NAMESPACE_STD#if _LIBCPP_STD_VER > 11template <class _Tp = void>#elsetemplate <class _Tp>#endifstruct _LIBCPP_TEMPLATE_VIS plus : binary_function<_Tp, _Tp, _Tp>{ _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const {return __x + __y;}};#if _LIBCPP_STD_VER > 11template <>struct _LIBCPP_TEMPLATE_VIS plus<void>{ template <class _T1, class _T2> _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY auto operator()(_T1&& __t, _T2&& __u) const _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u))) -> decltype (_VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u)) { return _VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u); } typedef void is_transparent;};#endif#if _LIBCPP_STD_VER > 11template <class _Tp = void>#elsetemplate <class _Tp>#endifstruct _LIBCPP_TEMPLATE_VIS minus : binary_function<_Tp, _Tp, _Tp>{ _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const {return __x - __y;}};#if _LIBCPP_STD_VER > 11template <>struct _LIBCPP_TEMPLATE_VIS minus<void>{ template <class _T1, class _T2> _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY auto operator()(_T1&& __t, _T2&& __u) const _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u))) -> decltype (_VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u)) { return _VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u); } typedef void is_transparent;};#endif#if _LIBCPP_STD_VER > 11template <class _Tp = void>#elsetemplate <class _Tp>#endifstruct _LIBCPP_TEMPLATE_VIS multiplies : binary_function<_Tp, _Tp, _Tp>{ _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const {return __x * __y;}};#if _LIBCPP_STD_VER > 11template <>struct _LIBCPP_TEMPLATE_VIS multiplies<void>{ template <class _T1, class _T2> _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY auto operator()(_T1&& __t, _T2&& __u) const _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u))) -> decltype (_VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u)) { return _VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u); } typedef void is_transparent;};#endif#if _LIBCPP_STD_VER > 11template <class _Tp = void>#elsetemplate <class _Tp>#endifstruct _LIBCPP_TEMPLATE_VIS divides : binary_function<_Tp, _Tp, _Tp>{ _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const {return __x / __y;}};#if _LIBCPP_STD_VER > 11template <>struct _LIBCPP_TEMPLATE_VIS divides<void>{ template <class _T1, class _T2> _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY auto operator()(_T1&& __t, _T2&& __u) const _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u))) -> decltype (_VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u)) { return _VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u); } typedef void is_transparent;};#endif#if _LIBCPP_STD_VER > 11template <class _Tp = void>#elsetemplate <class _Tp>#endifstruct _LIBCPP_TEMPLATE_VIS modulus : binary_function<_Tp, _Tp, _Tp>{ _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const {return __x % __y;}};#if _LIBCPP_STD_VER > 11template <>struct _LIBCPP_TEMPLATE_VIS modulus<void>{ template <class _T1, class _T2> _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY auto operator()(_T1&& __t, _T2&& __u) const _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u))) -> decltype (_VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u)) { return _VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u); } typedef void is_transparent;};#endif#if _LIBCPP_STD_VER > 11template <class _Tp = void>#elsetemplate <class _Tp>#endifstruct _LIBCPP_TEMPLATE_VIS negate : unary_function<_Tp, _Tp>{ _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x) const {return -__x;}};#if _LIBCPP_STD_VER > 11template <>struct _LIBCPP_TEMPLATE_VIS negate<void>{ template <class _Tp> _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY auto operator()(_Tp&& __x) const _NOEXCEPT_(noexcept(- _VSTD::forward<_Tp>(__x))) -> decltype (- _VSTD::forward<_Tp>(__x)) { return - _VSTD::forward<_Tp>(__x); } typedef void is_transparent;};#endif#if _LIBCPP_STD_VER > 11template <class _Tp = void>#elsetemplate <class _Tp>#endifstruct _LIBCPP_TEMPLATE_VIS equal_to : binary_function<_Tp, _Tp, bool>{ _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const {return __x == __y;}};#if _LIBCPP_STD_VER > 11template <>struct _LIBCPP_TEMPLATE_VIS equal_to<void>{ template <class _T1, class _T2> _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY auto operator()(_T1&& __t, _T2&& __u) const _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u))) -> decltype (_VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u)) { return _VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u); } typedef void is_transparent;};#endif#if _LIBCPP_STD_VER > 11template <class _Tp = void>#elsetemplate <class _Tp>#endifstruct _LIBCPP_TEMPLATE_VIS not_equal_to : binary_function<_Tp, _Tp, bool>{ _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const {return __x != __y;}};#if _LIBCPP_STD_VER > 11template <>struct _LIBCPP_TEMPLATE_VIS not_equal_to<void>{ template <class _T1, class _T2> _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY auto operator()(_T1&& __t, _T2&& __u) const _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u))) -> decltype (_VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u)) { return _VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u); } typedef void is_transparent;};#endif#if _LIBCPP_STD_VER > 11template <class _Tp = void>#elsetemplate <class _Tp>#endifstruct _LIBCPP_TEMPLATE_VIS greater : binary_function<_Tp, _Tp, bool>{ _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const {return __x > __y;}};#if _LIBCPP_STD_VER > 11template <>struct _LIBCPP_TEMPLATE_VIS greater<void>{ template <class _T1, class _T2> _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY auto operator()(_T1&& __t, _T2&& __u) const _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u))) -> decltype (_VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u)) { return _VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u); } typedef void is_transparent;};#endif// less in <__functional_base>#if _LIBCPP_STD_VER > 11template <class _Tp = void>#elsetemplate <class _Tp>#endifstruct _LIBCPP_TEMPLATE_VIS greater_equal : binary_function<_Tp, _Tp, bool>{ _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const {return __x >= __y;}};#if _LIBCPP_STD_VER > 11template <>struct _LIBCPP_TEMPLATE_VIS greater_equal<void>{ template <class _T1, class _T2> _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY auto operator()(_T1&& __t, _T2&& __u) const _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u))) -> decltype (_VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u)) { return _VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u); } typedef void is_transparent;};#endif#if _LIBCPP_STD_VER > 11template <class _Tp = void>#elsetemplate <class _Tp>#endifstruct _LIBCPP_TEMPLATE_VIS less_equal : binary_function<_Tp, _Tp, bool>{ _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const {return __x <= __y;}};#if _LIBCPP_STD_VER > 11template <>struct _LIBCPP_TEMPLATE_VIS less_equal<void>{ template <class _T1, class _T2> _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY auto operator()(_T1&& __t, _T2&& __u) const _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u))) -> decltype (_VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u)) { return _VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u); } typedef void is_transparent;};#endif#if _LIBCPP_STD_VER > 11template <class _Tp = void>#elsetemplate <class _Tp>#endifstruct _LIBCPP_TEMPLATE_VIS logical_and : binary_function<_Tp, _Tp, bool>{ _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const {return __x && __y;}};#if _LIBCPP_STD_VER > 11template <>struct _LIBCPP_TEMPLATE_VIS logical_and<void>{ template <class _T1, class _T2> _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY auto operator()(_T1&& __t, _T2&& __u) const _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u))) -> decltype (_VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u)) { return _VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u); } typedef void is_transparent;};#endif#if _LIBCPP_STD_VER > 11template <class _Tp = void>#elsetemplate <class _Tp>#endifstruct _LIBCPP_TEMPLATE_VIS logical_or : binary_function<_Tp, _Tp, bool>{ _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const {return __x || __y;}};#if _LIBCPP_STD_VER > 11template <>struct _LIBCPP_TEMPLATE_VIS logical_or<void>{ template <class _T1, class _T2> _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY auto operator()(_T1&& __t, _T2&& __u) const _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u))) -> decltype (_VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u)) { return _VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u); } typedef void is_transparent;};#endif#if _LIBCPP_STD_VER > 11template <class _Tp = void>#elsetemplate <class _Tp>#endifstruct _LIBCPP_TEMPLATE_VIS logical_not : unary_function<_Tp, bool>{ _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x) const {return !__x;}};#if _LIBCPP_STD_VER > 11template <>struct _LIBCPP_TEMPLATE_VIS logical_not<void>{ template <class _Tp> _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY auto operator()(_Tp&& __x) const _NOEXCEPT_(noexcept(!_VSTD::forward<_Tp>(__x))) -> decltype (!_VSTD::forward<_Tp>(__x)) { return !_VSTD::forward<_Tp>(__x); } typedef void is_transparent;};#endif#if _LIBCPP_STD_VER > 11template <class _Tp = void>#elsetemplate <class _Tp>#endifstruct _LIBCPP_TEMPLATE_VIS bit_and : binary_function<_Tp, _Tp, _Tp>{ _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const {return __x & __y;}};#if _LIBCPP_STD_VER > 11template <>struct _LIBCPP_TEMPLATE_VIS bit_and<void>{ template <class _T1, class _T2> _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY auto operator()(_T1&& __t, _T2&& __u) const _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u))) -> decltype (_VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u)) { return _VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u); } typedef void is_transparent;};#endif#if _LIBCPP_STD_VER > 11template <class _Tp = void>#elsetemplate <class _Tp>#endifstruct _LIBCPP_TEMPLATE_VIS bit_or : binary_function<_Tp, _Tp, _Tp>{ _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const {return __x | __y;}};#if _LIBCPP_STD_VER > 11template <>struct _LIBCPP_TEMPLATE_VIS bit_or<void>{ template <class _T1, class _T2> _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY auto operator()(_T1&& __t, _T2&& __u) const _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u))) -> decltype (_VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u)) { return _VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u); } typedef void is_transparent;};#endif#if _LIBCPP_STD_VER > 11template <class _Tp = void>#elsetemplate <class _Tp>#endifstruct _LIBCPP_TEMPLATE_VIS bit_xor : binary_function<_Tp, _Tp, _Tp>{ _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const {return __x ^ __y;}};#if _LIBCPP_STD_VER > 11template <>struct _LIBCPP_TEMPLATE_VIS bit_xor<void>{ template <class _T1, class _T2> _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY auto operator()(_T1&& __t, _T2&& __u) const _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u))) -> decltype (_VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u)) { return _VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u); } typedef void is_transparent;};#endif#if _LIBCPP_STD_VER > 11template <class _Tp = void>struct _LIBCPP_TEMPLATE_VIS bit_not : unary_function<_Tp, _Tp>{ _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x) const {return ~__x;}};template <>struct _LIBCPP_TEMPLATE_VIS bit_not<void>{ template <class _Tp> _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY auto operator()(_Tp&& __x) const _NOEXCEPT_(noexcept(~_VSTD::forward<_Tp>(__x))) -> decltype (~_VSTD::forward<_Tp>(__x)) { return ~_VSTD::forward<_Tp>(__x); } typedef void is_transparent;};#endiftemplate <class _Predicate>class _LIBCPP_TEMPLATE_VIS unary_negate : public unary_function<typename _Predicate::argument_type, bool>{ _Predicate __pred_;public: _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY explicit unary_negate(const _Predicate& __pred) : __pred_(__pred) {} _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY bool operator()(const typename _Predicate::argument_type& __x) const {return !__pred_(__x);}};template <class _Predicate>inline _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYunary_negate<_Predicate>not1(const _Predicate& __pred) {return unary_negate<_Predicate>(__pred);}template <class _Predicate>class _LIBCPP_TEMPLATE_VIS binary_negate : public binary_function<typename _Predicate::first_argument_type, typename _Predicate::second_argument_type, bool>{ _Predicate __pred_;public: _LIBCPP_INLINE_VISIBILITY explicit _LIBCPP_CONSTEXPR_AFTER_CXX11 binary_negate(const _Predicate& __pred) : __pred_(__pred) {} _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY bool operator()(const typename _Predicate::first_argument_type& __x, const typename _Predicate::second_argument_type& __y) const {return !__pred_(__x, __y);}};template <class _Predicate>inline _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYbinary_negate<_Predicate>not2(const _Predicate& __pred) {return binary_negate<_Predicate>(__pred);}#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS)template <class __Operation>class _LIBCPP_TEMPLATE_VIS binder1st : public unary_function<typename __Operation::second_argument_type, typename __Operation::result_type>{protected: __Operation op; typename __Operation::first_argument_type value;public: _LIBCPP_INLINE_VISIBILITY binder1st(const __Operation& __x, const typename __Operation::first_argument_type __y) : op(__x), value(__y) {} _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() (typename __Operation::second_argument_type& __x) const {return op(value, __x);} _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() (const typename __Operation::second_argument_type& __x) const {return op(value, __x);}};template <class __Operation, class _Tp>inline _LIBCPP_INLINE_VISIBILITYbinder1st<__Operation>bind1st(const __Operation& __op, const _Tp& __x) {return binder1st<__Operation>(__op, __x);}template <class __Operation>class _LIBCPP_TEMPLATE_VIS binder2nd : public unary_function<typename __Operation::first_argument_type, typename __Operation::result_type>{protected: __Operation op; typename __Operation::second_argument_type value;public: _LIBCPP_INLINE_VISIBILITY binder2nd(const __Operation& __x, const typename __Operation::second_argument_type __y) : op(__x), value(__y) {} _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() ( typename __Operation::first_argument_type& __x) const {return op(__x, value);} _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() (const typename __Operation::first_argument_type& __x) const {return op(__x, value);}};template <class __Operation, class _Tp>inline _LIBCPP_INLINE_VISIBILITYbinder2nd<__Operation>bind2nd(const __Operation& __op, const _Tp& __x) {return binder2nd<__Operation>(__op, __x);}template <class _Arg, class _Result>class _LIBCPP_TEMPLATE_VIS pointer_to_unary_function : public unary_function<_Arg, _Result>{ _Result (*__f_)(_Arg);public: _LIBCPP_INLINE_VISIBILITY explicit pointer_to_unary_function(_Result (*__f)(_Arg)) : __f_(__f) {} _LIBCPP_INLINE_VISIBILITY _Result operator()(_Arg __x) const {return __f_(__x);}};template <class _Arg, class _Result>inline _LIBCPP_INLINE_VISIBILITYpointer_to_unary_function<_Arg,_Result>ptr_fun(_Result (*__f)(_Arg)) {return pointer_to_unary_function<_Arg,_Result>(__f);}template <class _Arg1, class _Arg2, class _Result>class _LIBCPP_TEMPLATE_VIS pointer_to_binary_function : public binary_function<_Arg1, _Arg2, _Result>{ _Result (*__f_)(_Arg1, _Arg2);public: _LIBCPP_INLINE_VISIBILITY explicit pointer_to_binary_function(_Result (*__f)(_Arg1, _Arg2)) : __f_(__f) {} _LIBCPP_INLINE_VISIBILITY _Result operator()(_Arg1 __x, _Arg2 __y) const {return __f_(__x, __y);}};template <class _Arg1, class _Arg2, class _Result>inline _LIBCPP_INLINE_VISIBILITYpointer_to_binary_function<_Arg1,_Arg2,_Result>ptr_fun(_Result (*__f)(_Arg1,_Arg2)) {return pointer_to_binary_function<_Arg1,_Arg2,_Result>(__f);}template<class _Sp, class _Tp>class _LIBCPP_TEMPLATE_VIS mem_fun_t : public unary_function<_Tp*, _Sp>{ _Sp (_Tp::*__p_)();public: _LIBCPP_INLINE_VISIBILITY explicit mem_fun_t(_Sp (_Tp::*__p)()) : __p_(__p) {} _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp* __p) const {return (__p->*__p_)();}};template<class _Sp, class _Tp, class _Ap>class _LIBCPP_TEMPLATE_VIS mem_fun1_t : public binary_function<_Tp*, _Ap, _Sp>{ _Sp (_Tp::*__p_)(_Ap);public: _LIBCPP_INLINE_VISIBILITY explicit mem_fun1_t(_Sp (_Tp::*__p)(_Ap)) : __p_(__p) {} _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp* __p, _Ap __x) const {return (__p->*__p_)(__x);}};template<class _Sp, class _Tp>inline _LIBCPP_INLINE_VISIBILITYmem_fun_t<_Sp,_Tp>mem_fun(_Sp (_Tp::*__f)()) {return mem_fun_t<_Sp,_Tp>(__f);}template<class _Sp, class _Tp, class _Ap>inline _LIBCPP_INLINE_VISIBILITYmem_fun1_t<_Sp,_Tp,_Ap>mem_fun(_Sp (_Tp::*__f)(_Ap)) {return mem_fun1_t<_Sp,_Tp,_Ap>(__f);}template<class _Sp, class _Tp>class _LIBCPP_TEMPLATE_VIS mem_fun_ref_t : public unary_function<_Tp, _Sp>{ _Sp (_Tp::*__p_)();public: _LIBCPP_INLINE_VISIBILITY explicit mem_fun_ref_t(_Sp (_Tp::*__p)()) : __p_(__p) {} _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp& __p) const {return (__p.*__p_)();}};template<class _Sp, class _Tp, class _Ap>class _LIBCPP_TEMPLATE_VIS mem_fun1_ref_t : public binary_function<_Tp, _Ap, _Sp>{ _Sp (_Tp::*__p_)(_Ap);public: _LIBCPP_INLINE_VISIBILITY explicit mem_fun1_ref_t(_Sp (_Tp::*__p)(_Ap)) : __p_(__p) {} _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp& __p, _Ap __x) const {return (__p.*__p_)(__x);}};template<class _Sp, class _Tp>inline _LIBCPP_INLINE_VISIBILITYmem_fun_ref_t<_Sp,_Tp>mem_fun_ref(_Sp (_Tp::*__f)()) {return mem_fun_ref_t<_Sp,_Tp>(__f);}template<class _Sp, class _Tp, class _Ap>inline _LIBCPP_INLINE_VISIBILITYmem_fun1_ref_t<_Sp,_Tp,_Ap>mem_fun_ref(_Sp (_Tp::*__f)(_Ap)) {return mem_fun1_ref_t<_Sp,_Tp,_Ap>(__f);}template <class _Sp, class _Tp>class _LIBCPP_TEMPLATE_VIS const_mem_fun_t : public unary_function<const _Tp*, _Sp>{ _Sp (_Tp::*__p_)() const;public: _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun_t(_Sp (_Tp::*__p)() const) : __p_(__p) {} _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp* __p) const {return (__p->*__p_)();}};template <class _Sp, class _Tp, class _Ap>class _LIBCPP_TEMPLATE_VIS const_mem_fun1_t : public binary_function<const _Tp*, _Ap, _Sp>{ _Sp (_Tp::*__p_)(_Ap) const;public: _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun1_t(_Sp (_Tp::*__p)(_Ap) const) : __p_(__p) {} _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp* __p, _Ap __x) const {return (__p->*__p_)(__x);}};template <class _Sp, class _Tp>inline _LIBCPP_INLINE_VISIBILITYconst_mem_fun_t<_Sp,_Tp>mem_fun(_Sp (_Tp::*__f)() const) {return const_mem_fun_t<_Sp,_Tp>(__f);}template <class _Sp, class _Tp, class _Ap>inline _LIBCPP_INLINE_VISIBILITYconst_mem_fun1_t<_Sp,_Tp,_Ap>mem_fun(_Sp (_Tp::*__f)(_Ap) const) {return const_mem_fun1_t<_Sp,_Tp,_Ap>(__f);}template <class _Sp, class _Tp>class _LIBCPP_TEMPLATE_VIS const_mem_fun_ref_t : public unary_function<_Tp, _Sp>{ _Sp (_Tp::*__p_)() const;public: _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun_ref_t(_Sp (_Tp::*__p)() const) : __p_(__p) {} _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp& __p) const {return (__p.*__p_)();}};template <class _Sp, class _Tp, class _Ap>class _LIBCPP_TEMPLATE_VIS const_mem_fun1_ref_t : public binary_function<_Tp, _Ap, _Sp>{ _Sp (_Tp::*__p_)(_Ap) const;public: _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun1_ref_t(_Sp (_Tp::*__p)(_Ap) const) : __p_(__p) {} _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp& __p, _Ap __x) const {return (__p.*__p_)(__x);}};template <class _Sp, class _Tp>inline _LIBCPP_INLINE_VISIBILITYconst_mem_fun_ref_t<_Sp,_Tp>mem_fun_ref(_Sp (_Tp::*__f)() const) {return const_mem_fun_ref_t<_Sp,_Tp>(__f);}template <class _Sp, class _Tp, class _Ap>inline _LIBCPP_INLINE_VISIBILITYconst_mem_fun1_ref_t<_Sp,_Tp,_Ap>mem_fun_ref(_Sp (_Tp::*__f)(_Ap) const) {return const_mem_fun1_ref_t<_Sp,_Tp,_Ap>(__f);}#endif////////////////////////////////////////////////////////////////////////////////// MEMFUN//==============================================================================template <class _Tp>class __mem_fn : public __weak_result_type<_Tp>{public: // types typedef _Tp type;private: type __f_;public: _LIBCPP_INLINE_VISIBILITY __mem_fn(type __f) _NOEXCEPT : __f_(__f) {}#ifndef _LIBCPP_CXX03_LANG // invoke template <class... _ArgTypes> _LIBCPP_INLINE_VISIBILITY typename __invoke_return<type, _ArgTypes...>::type operator() (_ArgTypes&&... __args) const { return __invoke(__f_, _VSTD::forward<_ArgTypes>(__args)...); }#else template <class _A0> _LIBCPP_INLINE_VISIBILITY typename __invoke_return0<type, _A0>::type operator() (_A0& __a0) const { return __invoke(__f_, __a0); } template <class _A0> _LIBCPP_INLINE_VISIBILITY typename __invoke_return0<type, _A0 const>::type operator() (_A0 const& __a0) const { return __invoke(__f_, __a0); } template <class _A0, class _A1> _LIBCPP_INLINE_VISIBILITY typename __invoke_return1<type, _A0, _A1>::type operator() (_A0& __a0, _A1& __a1) const { return __invoke(__f_, __a0, __a1); } template <class _A0, class _A1> _LIBCPP_INLINE_VISIBILITY typename __invoke_return1<type, _A0 const, _A1>::type operator() (_A0 const& __a0, _A1& __a1) const { return __invoke(__f_, __a0, __a1); } template <class _A0, class _A1> _LIBCPP_INLINE_VISIBILITY typename __invoke_return1<type, _A0, _A1 const>::type operator() (_A0& __a0, _A1 const& __a1) const { return __invoke(__f_, __a0, __a1); } template <class _A0, class _A1> _LIBCPP_INLINE_VISIBILITY typename __invoke_return1<type, _A0 const, _A1 const>::type operator() (_A0 const& __a0, _A1 const& __a1) const { return __invoke(__f_, __a0, __a1); } template <class _A0, class _A1, class _A2> _LIBCPP_INLINE_VISIBILITY typename __invoke_return2<type, _A0, _A1, _A2>::type operator() (_A0& __a0, _A1& __a1, _A2& __a2) const { return __invoke(__f_, __a0, __a1, __a2); } template <class _A0, class _A1, class _A2> _LIBCPP_INLINE_VISIBILITY typename __invoke_return2<type, _A0 const, _A1, _A2>::type operator() (_A0 const& __a0, _A1& __a1, _A2& __a2) const { return __invoke(__f_, __a0, __a1, __a2); } template <class _A0, class _A1, class _A2> _LIBCPP_INLINE_VISIBILITY typename __invoke_return2<type, _A0, _A1 const, _A2>::type operator() (_A0& __a0, _A1 const& __a1, _A2& __a2) const { return __invoke(__f_, __a0, __a1, __a2); } template <class _A0, class _A1, class _A2> _LIBCPP_INLINE_VISIBILITY typename __invoke_return2<type, _A0, _A1, _A2 const>::type operator() (_A0& __a0, _A1& __a1, _A2 const& __a2) const { return __invoke(__f_, __a0, __a1, __a2); } template <class _A0, class _A1, class _A2> _LIBCPP_INLINE_VISIBILITY typename __invoke_return2<type, _A0 const, _A1 const, _A2>::type operator() (_A0 const& __a0, _A1 const& __a1, _A2& __a2) const { return __invoke(__f_, __a0, __a1, __a2); } template <class _A0, class _A1, class _A2> _LIBCPP_INLINE_VISIBILITY typename __invoke_return2<type, _A0 const, _A1, _A2 const>::type operator() (_A0 const& __a0, _A1& __a1, _A2 const& __a2) const { return __invoke(__f_, __a0, __a1, __a2); } template <class _A0, class _A1, class _A2> _LIBCPP_INLINE_VISIBILITY typename __invoke_return2<type, _A0, _A1 const, _A2 const>::type operator() (_A0& __a0, _A1 const& __a1, _A2 const& __a2) const { return __invoke(__f_, __a0, __a1, __a2); } template <class _A0, class _A1, class _A2> _LIBCPP_INLINE_VISIBILITY typename __invoke_return2<type, _A0 const, _A1 const, _A2 const>::type operator() (_A0 const& __a0, _A1 const& __a1, _A2 const& __a2) const { return __invoke(__f_, __a0, __a1, __a2); }#endif};template<class _Rp, class _Tp>inline _LIBCPP_INLINE_VISIBILITY__mem_fn<_Rp _Tp::*>mem_fn(_Rp _Tp::* __pm) _NOEXCEPT{ return __mem_fn<_Rp _Tp::*>(__pm);}////////////////////////////////////////////////////////////////////////////////// FUNCTION//==============================================================================// bad_function_callclass _LIBCPP_EXCEPTION_ABI bad_function_call : public exception{#ifdef _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTIONpublic: virtual ~bad_function_call() _NOEXCEPT; virtual const char* what() const _NOEXCEPT;#endif};_LIBCPP_NORETURN inline _LIBCPP_ALWAYS_INLINEvoid __throw_bad_function_call(){#ifndef _LIBCPP_NO_EXCEPTIONS throw bad_function_call();#else _VSTD::abort();#endif}template<class _Fp> class _LIBCPP_TEMPLATE_VIS function; // undefinednamespace __function{template<class _Rp>struct __maybe_derive_from_unary_function{};template<class _Rp, class _A1>struct __maybe_derive_from_unary_function<_Rp(_A1)> : public unary_function<_A1, _Rp>{};template<class _Rp>struct __maybe_derive_from_binary_function{};template<class _Rp, class _A1, class _A2>struct __maybe_derive_from_binary_function<_Rp(_A1, _A2)> : public binary_function<_A1, _A2, _Rp>{};template <class _Fp>_LIBCPP_INLINE_VISIBILITYbool __not_null(_Fp const&) { return true; }template <class _Fp>_LIBCPP_INLINE_VISIBILITYbool __not_null(_Fp* __ptr) { return __ptr; }template <class _Ret, class _Class>_LIBCPP_INLINE_VISIBILITYbool __not_null(_Ret _Class::*__ptr) { return __ptr; }template <class _Fp>_LIBCPP_INLINE_VISIBILITYbool __not_null(function<_Fp> const& __f) { return !!__f; }} // namespace __function#ifndef _LIBCPP_CXX03_LANGnamespace __function {template<class _Fp> class __base;template<class _Rp, class ..._ArgTypes>class __base<_Rp(_ArgTypes...)>{ __base(const __base&); __base& operator=(const __base&);public: _LIBCPP_INLINE_VISIBILITY __base() {} _LIBCPP_INLINE_VISIBILITY virtual ~__base() {} virtual __base* __clone() const = 0; virtual void __clone(__base*) const = 0; virtual void destroy() _NOEXCEPT = 0; virtual void destroy_deallocate() _NOEXCEPT = 0; virtual _Rp operator()(_ArgTypes&& ...) = 0;#ifndef _LIBCPP_NO_RTTI virtual const void* target(const type_info&) const _NOEXCEPT = 0; virtual const std::type_info& target_type() const _NOEXCEPT = 0;#endif // _LIBCPP_NO_RTTI};template<class _FD, class _Alloc, class _FB> class __func;template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>class __func<_Fp, _Alloc, _Rp(_ArgTypes...)> : public __base<_Rp(_ArgTypes...)>{ __compressed_pair<_Fp, _Alloc> __f_;public: _LIBCPP_INLINE_VISIBILITY explicit __func(_Fp&& __f) : __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)), _VSTD::forward_as_tuple()) {} _LIBCPP_INLINE_VISIBILITY explicit __func(const _Fp& __f, const _Alloc& __a) : __f_(piecewise_construct, _VSTD::forward_as_tuple(__f), _VSTD::forward_as_tuple(__a)) {} _LIBCPP_INLINE_VISIBILITY explicit __func(const _Fp& __f, _Alloc&& __a) : __f_(piecewise_construct, _VSTD::forward_as_tuple(__f), _VSTD::forward_as_tuple(_VSTD::move(__a))) {} _LIBCPP_INLINE_VISIBILITY explicit __func(_Fp&& __f, _Alloc&& __a) : __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)), _VSTD::forward_as_tuple(_VSTD::move(__a))) {} virtual __base<_Rp(_ArgTypes...)>* __clone() const; virtual void __clone(__base<_Rp(_ArgTypes...)>*) const; virtual void destroy() _NOEXCEPT; virtual void destroy_deallocate() _NOEXCEPT; virtual _Rp operator()(_ArgTypes&& ... __arg);#ifndef _LIBCPP_NO_RTTI virtual const void* target(const type_info&) const _NOEXCEPT; virtual const std::type_info& target_type() const _NOEXCEPT;#endif // _LIBCPP_NO_RTTI};template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>__base<_Rp(_ArgTypes...)>*__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone() const{ typedef allocator_traits<_Alloc> __alloc_traits; typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; _Ap __a(__f_.second()); typedef __allocator_destructor<_Ap> _Dp; unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); ::new (__hold.get()) __func(__f_.first(), _Alloc(__a)); return __hold.release();}template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>void__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone(__base<_Rp(_ArgTypes...)>* __p) const{ ::new (__p) __func(__f_.first(), __f_.second());}template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>void__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy() _NOEXCEPT{ __f_.~__compressed_pair<_Fp, _Alloc>();}template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>void__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy_deallocate() _NOEXCEPT{ typedef allocator_traits<_Alloc> __alloc_traits; typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; _Ap __a(__f_.second()); __f_.~__compressed_pair<_Fp, _Alloc>(); __a.deallocate(this, 1);}template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>_Rp__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::operator()(_ArgTypes&& ... __arg){ typedef __invoke_void_return_wrapper<_Rp> _Invoker; return _Invoker::__call(__f_.first(), _VSTD::forward<_ArgTypes>(__arg)...);}#ifndef _LIBCPP_NO_RTTItemplate<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>const void*__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target(const type_info& __ti) const _NOEXCEPT{ if (__ti == typeid(_Fp)) return &__f_.first(); return (const void*)0;}template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>const std::type_info&__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target_type() const _NOEXCEPT{ return typeid(_Fp);}#endif // _LIBCPP_NO_RTTI} // __functiontemplate<class _Rp, class ..._ArgTypes>class _LIBCPP_TEMPLATE_VIS function<_Rp(_ArgTypes...)> : public __function::__maybe_derive_from_unary_function<_Rp(_ArgTypes...)>, public __function::__maybe_derive_from_binary_function<_Rp(_ArgTypes...)>{ typedef __function::__base<_Rp(_ArgTypes...)> __base; typename aligned_storage<3*sizeof(void*)>::type __buf_; __base* __f_; _LIBCPP_NO_CFI static __base *__as_base(void *p) { return reinterpret_cast<__base*>(p); } template <class _Fp, bool = !is_same<_Fp, function>::value && __invokable<_Fp&, _ArgTypes...>::value> struct __callable; template <class _Fp> struct __callable<_Fp, true> { static const bool value = is_same<void, _Rp>::value || is_convertible<typename __invoke_of<_Fp&, _ArgTypes...>::type, _Rp>::value; }; template <class _Fp> struct __callable<_Fp, false> { static const bool value = false; };public: typedef _Rp result_type; // construct/copy/destroy: _LIBCPP_INLINE_VISIBILITY function() _NOEXCEPT : __f_(0) {} _LIBCPP_INLINE_VISIBILITY function(nullptr_t) _NOEXCEPT : __f_(0) {} function(const function&); function(function&&) _NOEXCEPT; template<class _Fp, class = typename enable_if< __callable<_Fp>::value && !is_same<_Fp, function>::value >::type> function(_Fp);#if _LIBCPP_STD_VER <= 14 template<class _Alloc> _LIBCPP_INLINE_VISIBILITY function(allocator_arg_t, const _Alloc&) _NOEXCEPT : __f_(0) {} template<class _Alloc> _LIBCPP_INLINE_VISIBILITY function(allocator_arg_t, const _Alloc&, nullptr_t) _NOEXCEPT : __f_(0) {} template<class _Alloc> function(allocator_arg_t, const _Alloc&, const function&); template<class _Alloc> function(allocator_arg_t, const _Alloc&, function&&); template<class _Fp, class _Alloc, class = typename enable_if<__callable<_Fp>::value>::type> function(allocator_arg_t, const _Alloc& __a, _Fp __f);#endif function& operator=(const function&); function& operator=(function&&) _NOEXCEPT; function& operator=(nullptr_t) _NOEXCEPT; template<class _Fp> typename enable_if < __callable<typename decay<_Fp>::type>::value && !is_same<typename remove_reference<_Fp>::type, function>::value, function& >::type operator=(_Fp&&); ~function(); // function modifiers: void swap(function&) _NOEXCEPT;#if _LIBCPP_STD_VER <= 14 template<class _Fp, class _Alloc> _LIBCPP_INLINE_VISIBILITY void assign(_Fp&& __f, const _Alloc& __a) {function(allocator_arg, __a, _VSTD::forward<_Fp>(__f)).swap(*this);}#endif // function capacity: _LIBCPP_INLINE_VISIBILITY _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return __f_;} // deleted overloads close possible hole in the type system template<class _R2, class... _ArgTypes2> bool operator==(const function<_R2(_ArgTypes2...)>&) const = delete; template<class _R2, class... _ArgTypes2> bool operator!=(const function<_R2(_ArgTypes2...)>&) const = delete;public: // function invocation: _Rp operator()(_ArgTypes...) const;#ifndef _LIBCPP_NO_RTTI // function target access: const std::type_info& target_type() const _NOEXCEPT; template <typename _Tp> _Tp* target() _NOEXCEPT; template <typename _Tp> const _Tp* target() const _NOEXCEPT;#endif // _LIBCPP_NO_RTTI};template<class _Rp, class ..._ArgTypes>function<_Rp(_ArgTypes...)>::function(const function& __f){ if (__f.__f_ == 0) __f_ = 0; else if ((void *)__f.__f_ == &__f.__buf_) { __f_ = __as_base(&__buf_); __f.__f_->__clone(__f_); } else __f_ = __f.__f_->__clone();}#if _LIBCPP_STD_VER <= 14template<class _Rp, class ..._ArgTypes>template <class _Alloc>function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&, const function& __f){ if (__f.__f_ == 0) __f_ = 0; else if ((void *)__f.__f_ == &__f.__buf_) { __f_ = __as_base(&__buf_); __f.__f_->__clone(__f_); } else __f_ = __f.__f_->__clone();}#endiftemplate<class _Rp, class ..._ArgTypes>function<_Rp(_ArgTypes...)>::function(function&& __f) _NOEXCEPT{ if (__f.__f_ == 0) __f_ = 0; else if ((void *)__f.__f_ == &__f.__buf_) { __f_ = __as_base(&__buf_); __f.__f_->__clone(__f_); } else { __f_ = __f.__f_; __f.__f_ = 0; }}#if _LIBCPP_STD_VER <= 14template<class _Rp, class ..._ArgTypes>template <class _Alloc>function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&, function&& __f){ if (__f.__f_ == 0) __f_ = 0; else if ((void *)__f.__f_ == &__f.__buf_) { __f_ = __as_base(&__buf_); __f.__f_->__clone(__f_); } else { __f_ = __f.__f_; __f.__f_ = 0; }}#endiftemplate<class _Rp, class ..._ArgTypes>template <class _Fp, class>function<_Rp(_ArgTypes...)>::function(_Fp __f) : __f_(0){ if (__function::__not_null(__f)) { typedef __function::__func<_Fp, allocator<_Fp>, _Rp(_ArgTypes...)> _FF; if (sizeof(_FF) <= sizeof(__buf_) && is_nothrow_copy_constructible<_Fp>::value) { __f_ = ::new((void*)&__buf_) _FF(_VSTD::move(__f)); } else { typedef allocator<_FF> _Ap; _Ap __a; typedef __allocator_destructor<_Ap> _Dp; unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); ::new (__hold.get()) _FF(_VSTD::move(__f), allocator<_Fp>(__a)); __f_ = __hold.release(); } }}#if _LIBCPP_STD_VER <= 14template<class _Rp, class ..._ArgTypes>template <class _Fp, class _Alloc, class>function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc& __a0, _Fp __f) : __f_(0){ typedef allocator_traits<_Alloc> __alloc_traits; if (__function::__not_null(__f)) { typedef __function::__func<_Fp, _Alloc, _Rp(_ArgTypes...)> _FF; typedef typename __rebind_alloc_helper<__alloc_traits, _FF>::type _Ap; _Ap __a(__a0); if (sizeof(_FF) <= sizeof(__buf_) && is_nothrow_copy_constructible<_Fp>::value && is_nothrow_copy_constructible<_Ap>::value) { __f_ = ::new((void*)&__buf_) _FF(_VSTD::move(__f), _Alloc(__a)); } else { typedef __allocator_destructor<_Ap> _Dp; unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); ::new (__hold.get()) _FF(_VSTD::move(__f), _Alloc(__a)); __f_ = __hold.release(); } }}#endiftemplate<class _Rp, class ..._ArgTypes>function<_Rp(_ArgTypes...)>&function<_Rp(_ArgTypes...)>::operator=(const function& __f){ function(__f).swap(*this); return *this;}template<class _Rp, class ..._ArgTypes>function<_Rp(_ArgTypes...)>&function<_Rp(_ArgTypes...)>::operator=(function&& __f) _NOEXCEPT{ function::operator=(nullptr); if (__f.__f_ == 0) __f_ = 0; else if ((void *)__f.__f_ == &__f.__buf_) { __f_ = __as_base(&__buf_); __f.__f_->__clone(__f_); } else { __f_ = __f.__f_; __f.__f_ = 0; } return *this;}template<class _Rp, class ..._ArgTypes>function<_Rp(_ArgTypes...)>&function<_Rp(_ArgTypes...)>::operator=(nullptr_t) _NOEXCEPT{ __base* __t = __f_; __f_ = 0; if ((void *)__t == &__buf_) __t->destroy(); else if (__t) __t->destroy_deallocate(); return *this;}template<class _Rp, class ..._ArgTypes>template <class _Fp>typename enable_if< function<_Rp(_ArgTypes...)>::template __callable<typename decay<_Fp>::type>::value && !is_same<typename remove_reference<_Fp>::type, function<_Rp(_ArgTypes...)>>::value, function<_Rp(_ArgTypes...)>&>::typefunction<_Rp(_ArgTypes...)>::operator=(_Fp&& __f){ function(_VSTD::forward<_Fp>(__f)).swap(*this); return *this;}template<class _Rp, class ..._ArgTypes>function<_Rp(_ArgTypes...)>::~function(){ if ((void *)__f_ == &__buf_) __f_->destroy(); else if (__f_) __f_->destroy_deallocate();}template<class _Rp, class ..._ArgTypes>voidfunction<_Rp(_ArgTypes...)>::swap(function& __f) _NOEXCEPT{ if (_VSTD::addressof(__f) == this) return; if ((void *)__f_ == &__buf_ && (void *)__f.__f_ == &__f.__buf_) { typename aligned_storage<sizeof(__buf_)>::type __tempbuf; __base* __t = __as_base(&__tempbuf); __f_->__clone(__t); __f_->destroy(); __f_ = 0; __f.__f_->__clone(__as_base(&__buf_)); __f.__f_->destroy(); __f.__f_ = 0; __f_ = __as_base(&__buf_); __t->__clone(__as_base(&__f.__buf_)); __t->destroy(); __f.__f_ = __as_base(&__f.__buf_); } else if ((void *)__f_ == &__buf_) { __f_->__clone(__as_base(&__f.__buf_)); __f_->destroy(); __f_ = __f.__f_; __f.__f_ = __as_base(&__f.__buf_); } else if ((void *)__f.__f_ == &__f.__buf_) { __f.__f_->__clone(__as_base(&__buf_)); __f.__f_->destroy(); __f.__f_ = __f_; __f_ = __as_base(&__buf_); } else _VSTD::swap(__f_, __f.__f_);}template<class _Rp, class ..._ArgTypes>_Rpfunction<_Rp(_ArgTypes...)>::operator()(_ArgTypes... __arg) const{ if (__f_ == 0) __throw_bad_function_call(); return (*__f_)(_VSTD::forward<_ArgTypes>(__arg)...);}#ifndef _LIBCPP_NO_RTTItemplate<class _Rp, class ..._ArgTypes>const std::type_info&function<_Rp(_ArgTypes...)>::target_type() const _NOEXCEPT{ if (__f_ == 0) return typeid(void); return __f_->target_type();}template<class _Rp, class ..._ArgTypes>template <typename _Tp>_Tp*function<_Rp(_ArgTypes...)>::target() _NOEXCEPT{ if (__f_ == 0) return nullptr; return (_Tp*) const_cast<void *>(__f_->target(typeid(_Tp)));}template<class _Rp, class ..._ArgTypes>template <typename _Tp>const _Tp*function<_Rp(_ArgTypes...)>::target() const _NOEXCEPT{ if (__f_ == 0) return nullptr; return (const _Tp*)__f_->target(typeid(_Tp));}#endif // _LIBCPP_NO_RTTItemplate <class _Rp, class... _ArgTypes>inline _LIBCPP_INLINE_VISIBILITYbooloperator==(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return !__f;}template <class _Rp, class... _ArgTypes>inline _LIBCPP_INLINE_VISIBILITYbooloperator==(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return !__f;}template <class _Rp, class... _ArgTypes>inline _LIBCPP_INLINE_VISIBILITYbooloperator!=(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return (bool)__f;}template <class _Rp, class... _ArgTypes>inline _LIBCPP_INLINE_VISIBILITYbooloperator!=(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return (bool)__f;}template <class _Rp, class... _ArgTypes>inline _LIBCPP_INLINE_VISIBILITYvoidswap(function<_Rp(_ArgTypes...)>& __x, function<_Rp(_ArgTypes...)>& __y) _NOEXCEPT{return __x.swap(__y);}#else // _LIBCPP_CXX03_LANG#include <__functional_03>#endif////////////////////////////////////////////////////////////////////////////////// BIND//==============================================================================template<class _Tp> struct __is_bind_expression : public false_type {};template<class _Tp> struct _LIBCPP_TEMPLATE_VIS is_bind_expression : public __is_bind_expression<typename remove_cv<_Tp>::type> {};#if _LIBCPP_STD_VER > 14template <class _Tp>constexpr size_t is_bind_expression_v = is_bind_expression<_Tp>::value;#endiftemplate<class _Tp> struct __is_placeholder : public integral_constant<int, 0> {};template<class _Tp> struct _LIBCPP_TEMPLATE_VIS is_placeholder : public __is_placeholder<typename remove_cv<_Tp>::type> {};#if _LIBCPP_STD_VER > 14template <class _Tp>constexpr size_t is_placeholder_v = is_placeholder<_Tp>::value;#endifnamespace placeholders{template <int _Np> struct __ph {};#if defined(_LIBCPP_CXX03_LANG) || defined(_LIBCPP_BUILDING_BIND)_LIBCPP_FUNC_VIS extern const __ph<1> _1;_LIBCPP_FUNC_VIS extern const __ph<2> _2;_LIBCPP_FUNC_VIS extern const __ph<3> _3;_LIBCPP_FUNC_VIS extern const __ph<4> _4;_LIBCPP_FUNC_VIS extern const __ph<5> _5;_LIBCPP_FUNC_VIS extern const __ph<6> _6;_LIBCPP_FUNC_VIS extern const __ph<7> _7;_LIBCPP_FUNC_VIS extern const __ph<8> _8;_LIBCPP_FUNC_VIS extern const __ph<9> _9;_LIBCPP_FUNC_VIS extern const __ph<10> _10;#elseconstexpr __ph<1> _1{};constexpr __ph<2> _2{};constexpr __ph<3> _3{};constexpr __ph<4> _4{};constexpr __ph<5> _5{};constexpr __ph<6> _6{};constexpr __ph<7> _7{};constexpr __ph<8> _8{};constexpr __ph<9> _9{};constexpr __ph<10> _10{};#endif // defined(_LIBCPP_CXX03_LANG) || defined(_LIBCPP_BUILDING_BIND)} // placeholderstemplate<int _Np>struct __is_placeholder<placeholders::__ph<_Np> > : public integral_constant<int, _Np> {};#ifndef _LIBCPP_CXX03_LANGtemplate <class _Tp, class _Uj>inline _LIBCPP_INLINE_VISIBILITY_Tp&__mu(reference_wrapper<_Tp> __t, _Uj&){ return __t.get();}template <class _Ti, class ..._Uj, size_t ..._Indx>inline _LIBCPP_INLINE_VISIBILITYtypename __invoke_of<_Ti&, _Uj...>::type__mu_expand(_Ti& __ti, tuple<_Uj...>& __uj, __tuple_indices<_Indx...>){ return __ti(_VSTD::forward<_Uj>(_VSTD::get<_Indx>(__uj))...);}template <class _Ti, class ..._Uj>inline _LIBCPP_INLINE_VISIBILITYtypename __lazy_enable_if< is_bind_expression<_Ti>::value, __invoke_of<_Ti&, _Uj...>>::type__mu(_Ti& __ti, tuple<_Uj...>& __uj){ typedef typename __make_tuple_indices<sizeof...(_Uj)>::type __indices; return __mu_expand(__ti, __uj, __indices());}template <bool IsPh, class _Ti, class _Uj>struct __mu_return2 {};template <class _Ti, class _Uj>struct __mu_return2<true, _Ti, _Uj>{ typedef typename tuple_element<is_placeholder<_Ti>::value - 1, _Uj>::type type;};template <class _Ti, class _Uj>inline _LIBCPP_INLINE_VISIBILITYtypename enable_if< 0 < is_placeholder<_Ti>::value, typename __mu_return2<0 < is_placeholder<_Ti>::value, _Ti, _Uj>::type>::type__mu(_Ti&, _Uj& __uj){ const size_t _Indx = is_placeholder<_Ti>::value - 1; return _VSTD::forward<typename tuple_element<_Indx, _Uj>::type>(_VSTD::get<_Indx>(__uj));}template <class _Ti, class _Uj>inline _LIBCPP_INLINE_VISIBILITYtypename enable_if< !is_bind_expression<_Ti>::value && is_placeholder<_Ti>::value == 0 && !__is_reference_wrapper<_Ti>::value, _Ti&>::type__mu(_Ti& __ti, _Uj&){ return __ti;}template <class _Ti, bool IsReferenceWrapper, bool IsBindEx, bool IsPh, class _TupleUj>struct ____mu_return;template <bool _Invokable, class _Ti, class ..._Uj>struct ____mu_return_invokable // false{ typedef __nat type;};template <class _Ti, class ..._Uj>struct ____mu_return_invokable<true, _Ti, _Uj...>{ typedef typename __invoke_of<_Ti&, _Uj...>::type type;};template <class _Ti, class ..._Uj>struct ____mu_return<_Ti, false, true, false, tuple<_Uj...> > : public ____mu_return_invokable<__invokable<_Ti&, _Uj...>::value, _Ti, _Uj...>{};template <class _Ti, class _TupleUj>struct ____mu_return<_Ti, false, false, true, _TupleUj>{ typedef typename tuple_element<is_placeholder<_Ti>::value - 1, _TupleUj>::type&& type;};template <class _Ti, class _TupleUj>struct ____mu_return<_Ti, true, false, false, _TupleUj>{ typedef typename _Ti::type& type;};template <class _Ti, class _TupleUj>struct ____mu_return<_Ti, false, false, false, _TupleUj>{ typedef _Ti& type;};template <class _Ti, class _TupleUj>struct __mu_return : public ____mu_return<_Ti, __is_reference_wrapper<_Ti>::value, is_bind_expression<_Ti>::value, 0 < is_placeholder<_Ti>::value && is_placeholder<_Ti>::value <= tuple_size<_TupleUj>::value, _TupleUj>{};template <class _Fp, class _BoundArgs, class _TupleUj>struct __is_valid_bind_return{ static const bool value = false;};template <class _Fp, class ..._BoundArgs, class _TupleUj>struct __is_valid_bind_return<_Fp, tuple<_BoundArgs...>, _TupleUj>{ static const bool value = __invokable<_Fp, typename __mu_return<_BoundArgs, _TupleUj>::type...>::value;};template <class _Fp, class ..._BoundArgs, class _TupleUj>struct __is_valid_bind_return<_Fp, const tuple<_BoundArgs...>, _TupleUj>{ static const bool value = __invokable<_Fp, typename __mu_return<const _BoundArgs, _TupleUj>::type...>::value;};template <class _Fp, class _BoundArgs, class _TupleUj, bool = __is_valid_bind_return<_Fp, _BoundArgs, _TupleUj>::value>struct __bind_return;template <class _Fp, class ..._BoundArgs, class _TupleUj>struct __bind_return<_Fp, tuple<_BoundArgs...>, _TupleUj, true>{ typedef typename __invoke_of < _Fp&, typename __mu_return < _BoundArgs, _TupleUj >::type... >::type type;};template <class _Fp, class ..._BoundArgs, class _TupleUj>struct __bind_return<_Fp, const tuple<_BoundArgs...>, _TupleUj, true>{ typedef typename __invoke_of < _Fp&, typename __mu_return < const _BoundArgs, _TupleUj >::type... >::type type;};template <class _Fp, class _BoundArgs, size_t ..._Indx, class _Args>inline _LIBCPP_INLINE_VISIBILITYtypename __bind_return<_Fp, _BoundArgs, _Args>::type__apply_functor(_Fp& __f, _BoundArgs& __bound_args, __tuple_indices<_Indx...>, _Args&& __args){ return _VSTD::__invoke(__f, _VSTD::__mu(_VSTD::get<_Indx>(__bound_args), __args)...);}template<class _Fp, class ..._BoundArgs>class __bind : public __weak_result_type<typename decay<_Fp>::type>{protected: typedef typename decay<_Fp>::type _Fd; typedef tuple<typename decay<_BoundArgs>::type...> _Td;private: _Fd __f_; _Td __bound_args_; typedef typename __make_tuple_indices<sizeof...(_BoundArgs)>::type __indices;public: template <class _Gp, class ..._BA, class = typename enable_if < is_constructible<_Fd, _Gp>::value && !is_same<typename remove_reference<_Gp>::type, __bind>::value >::type> _LIBCPP_INLINE_VISIBILITY explicit __bind(_Gp&& __f, _BA&& ...__bound_args) : __f_(_VSTD::forward<_Gp>(__f)), __bound_args_(_VSTD::forward<_BA>(__bound_args)...) {} template <class ..._Args> _LIBCPP_INLINE_VISIBILITY typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type operator()(_Args&& ...__args) { return _VSTD::__apply_functor(__f_, __bound_args_, __indices(), tuple<_Args&&...>(_VSTD::forward<_Args>(__args)...)); } template <class ..._Args> _LIBCPP_INLINE_VISIBILITY typename __bind_return<const _Fd, const _Td, tuple<_Args&&...> >::type operator()(_Args&& ...__args) const { return _VSTD::__apply_functor(__f_, __bound_args_, __indices(), tuple<_Args&&...>(_VSTD::forward<_Args>(__args)...)); }};template<class _Fp, class ..._BoundArgs>struct __is_bind_expression<__bind<_Fp, _BoundArgs...> > : public true_type {};template<class _Rp, class _Fp, class ..._BoundArgs>class __bind_r : public __bind<_Fp, _BoundArgs...>{ typedef __bind<_Fp, _BoundArgs...> base; typedef typename base::_Fd _Fd; typedef typename base::_Td _Td;public: typedef _Rp result_type; template <class _Gp, class ..._BA, class = typename enable_if < is_constructible<_Fd, _Gp>::value && !is_same<typename remove_reference<_Gp>::type, __bind_r>::value >::type> _LIBCPP_INLINE_VISIBILITY explicit __bind_r(_Gp&& __f, _BA&& ...__bound_args) : base(_VSTD::forward<_Gp>(__f), _VSTD::forward<_BA>(__bound_args)...) {} template <class ..._Args> _LIBCPP_INLINE_VISIBILITY typename enable_if < is_convertible<typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type, result_type>::value || is_void<_Rp>::value, result_type >::type operator()(_Args&& ...__args) { typedef __invoke_void_return_wrapper<_Rp> _Invoker; return _Invoker::__call(static_cast<base&>(*this), _VSTD::forward<_Args>(__args)...); } template <class ..._Args> _LIBCPP_INLINE_VISIBILITY typename enable_if < is_convertible<typename __bind_return<const _Fd, const _Td, tuple<_Args&&...> >::type, result_type>::value || is_void<_Rp>::value, result_type >::type operator()(_Args&& ...__args) const { typedef __invoke_void_return_wrapper<_Rp> _Invoker; return _Invoker::__call(static_cast<base const&>(*this), _VSTD::forward<_Args>(__args)...); }};template<class _Rp, class _Fp, class ..._BoundArgs>struct __is_bind_expression<__bind_r<_Rp, _Fp, _BoundArgs...> > : public true_type {};template<class _Fp, class ..._BoundArgs>inline _LIBCPP_INLINE_VISIBILITY__bind<_Fp, _BoundArgs...>bind(_Fp&& __f, _BoundArgs&&... __bound_args){ typedef __bind<_Fp, _BoundArgs...> type; return type(_VSTD::forward<_Fp>(__f), _VSTD::forward<_BoundArgs>(__bound_args)...);}template<class _Rp, class _Fp, class ..._BoundArgs>inline _LIBCPP_INLINE_VISIBILITY__bind_r<_Rp, _Fp, _BoundArgs...>bind(_Fp&& __f, _BoundArgs&&... __bound_args){ typedef __bind_r<_Rp, _Fp, _BoundArgs...> type; return type(_VSTD::forward<_Fp>(__f), _VSTD::forward<_BoundArgs>(__bound_args)...);}#endif // _LIBCPP_CXX03_LANG#if _LIBCPP_STD_VER > 14#define __cpp_lib_invoke 201411template <class _Fn, class ..._Args>result_of_t<_Fn&&(_Args&&...)>invoke(_Fn&& __f, _Args&&... __args) noexcept(noexcept(_VSTD::__invoke(_VSTD::forward<_Fn>(__f), _VSTD::forward<_Args>(__args)...))){ return _VSTD::__invoke(_VSTD::forward<_Fn>(__f), _VSTD::forward<_Args>(__args)...);}template <class _DecayFunc>class _LIBCPP_TEMPLATE_VIS __not_fn_imp { _DecayFunc __fd;public: __not_fn_imp() = delete; template <class ..._Args> _LIBCPP_INLINE_VISIBILITY auto operator()(_Args&& ...__args) & noexcept(noexcept(!_VSTD::invoke(__fd, _VSTD::forward<_Args>(__args)...))) -> decltype( !_VSTD::invoke(__fd, _VSTD::forward<_Args>(__args)...)) { return !_VSTD::invoke(__fd, _VSTD::forward<_Args>(__args)...); } template <class ..._Args> _LIBCPP_INLINE_VISIBILITY auto operator()(_Args&& ...__args) && noexcept(noexcept(!_VSTD::invoke(_VSTD::move(__fd), _VSTD::forward<_Args>(__args)...))) -> decltype( !_VSTD::invoke(_VSTD::move(__fd), _VSTD::forward<_Args>(__args)...)) { return !_VSTD::invoke(_VSTD::move(__fd), _VSTD::forward<_Args>(__args)...); } template <class ..._Args> _LIBCPP_INLINE_VISIBILITY auto operator()(_Args&& ...__args) const& noexcept(noexcept(!_VSTD::invoke(__fd, _VSTD::forward<_Args>(__args)...))) -> decltype( !_VSTD::invoke(__fd, _VSTD::forward<_Args>(__args)...)) { return !_VSTD::invoke(__fd, _VSTD::forward<_Args>(__args)...); } template <class ..._Args> _LIBCPP_INLINE_VISIBILITY auto operator()(_Args&& ...__args) const&& noexcept(noexcept(!_VSTD::invoke(_VSTD::move(__fd), _VSTD::forward<_Args>(__args)...))) -> decltype( !_VSTD::invoke(_VSTD::move(__fd), _VSTD::forward<_Args>(__args)...)) { return !_VSTD::invoke(_VSTD::move(__fd), _VSTD::forward<_Args>(__args)...); }private: template <class _RawFunc, class = enable_if_t<!is_same<decay_t<_RawFunc>, __not_fn_imp>::value>> _LIBCPP_INLINE_VISIBILITY explicit __not_fn_imp(_RawFunc&& __rf) : __fd(_VSTD::forward<_RawFunc>(__rf)) {} template <class _RawFunc> friend inline _LIBCPP_INLINE_VISIBILITY __not_fn_imp<decay_t<_RawFunc>> not_fn(_RawFunc&&);};template <class _RawFunc>inline _LIBCPP_INLINE_VISIBILITY__not_fn_imp<decay_t<_RawFunc>> not_fn(_RawFunc&& __fn) { return __not_fn_imp<decay_t<_RawFunc>>(_VSTD::forward<_RawFunc>(__fn));}#endif// struct hash<T*> in <memory>_LIBCPP_END_NAMESPACE_STD#endif // _LIBCPP_FUNCTIONAL