29 #ifndef _GLIBCXX_TUPLE
30 #define _GLIBCXX_TUPLE 1
32 #pragma GCC system_header
34 #if __cplusplus < 201103L
40 #include <bits/uses_allocator.h>
42 namespace std _GLIBCXX_VISIBILITY(default)
44 _GLIBCXX_BEGIN_NAMESPACE_VERSION
52 template<
typename _Tp>
54 {
typedef const _Tp& type; };
56 template<
typename _Tp>
57 struct __add_c_ref<_Tp&>
58 {
typedef _Tp& type; };
61 template<
typename _Tp>
63 {
typedef _Tp& type; };
65 template<
typename _Tp>
66 struct __add_ref<_Tp&>
67 {
typedef _Tp& type; };
70 template<
typename _Tp>
72 {
typedef _Tp&& type; };
74 template<
typename _Tp>
75 struct __add_r_ref<_Tp&>
76 {
typedef _Tp& type; };
78 template<std::
size_t _Idx,
typename _Head,
bool _IsEmptyNotFinal>
81 template<std::
size_t _Idx,
typename _Head>
82 struct _Head_base<_Idx, _Head, true>
85 constexpr _Head_base()
88 constexpr _Head_base(
const _Head& __h)
91 constexpr _Head_base(
const _Head_base&) =
default;
92 constexpr _Head_base(_Head_base&&) =
default;
94 template<
typename _UHead>
95 constexpr _Head_base(_UHead&& __h)
96 : _Head(std::
forward<_UHead>(__h)) { }
98 _Head_base(allocator_arg_t, __uses_alloc0)
101 template<
typename _Alloc>
102 _Head_base(allocator_arg_t, __uses_alloc1<_Alloc> __a)
103 : _Head(allocator_arg, *__a._M_a) { }
105 template<
typename _Alloc>
106 _Head_base(allocator_arg_t, __uses_alloc2<_Alloc> __a)
107 : _Head(*__a._M_a) { }
109 template<
typename _UHead>
110 _Head_base(__uses_alloc0, _UHead&& __uhead)
111 : _Head(std::
forward<_UHead>(__uhead)) { }
113 template<
typename _Alloc,
typename _UHead>
114 _Head_base(__uses_alloc1<_Alloc> __a, _UHead&& __uhead)
115 : _Head(allocator_arg, *__a._M_a, std::
forward<_UHead>(__uhead)) { }
117 template<
typename _Alloc,
typename _UHead>
118 _Head_base(__uses_alloc2<_Alloc> __a, _UHead&& __uhead)
119 : _Head(std::
forward<_UHead>(__uhead), *__a._M_a) { }
121 static constexpr _Head&
122 _M_head(_Head_base& __b) noexcept {
return __b; }
124 static constexpr
const _Head&
125 _M_head(
const _Head_base& __b) noexcept {
return __b; }
128 template<std::
size_t _Idx,
typename _Head>
129 struct _Head_base<_Idx, _Head, false>
131 constexpr _Head_base()
134 constexpr _Head_base(
const _Head& __h)
135 : _M_head_impl(__h) { }
137 constexpr _Head_base(
const _Head_base&) =
default;
138 constexpr _Head_base(_Head_base&&) =
default;
140 template<
typename _UHead>
141 constexpr _Head_base(_UHead&& __h)
142 : _M_head_impl(std::
forward<_UHead>(__h)) { }
144 _Head_base(allocator_arg_t, __uses_alloc0)
147 template<
typename _Alloc>
148 _Head_base(allocator_arg_t, __uses_alloc1<_Alloc> __a)
149 : _M_head_impl(allocator_arg, *__a._M_a) { }
151 template<
typename _Alloc>
152 _Head_base(allocator_arg_t, __uses_alloc2<_Alloc> __a)
153 : _M_head_impl(*__a._M_a) { }
155 template<
typename _UHead>
156 _Head_base(__uses_alloc0, _UHead&& __uhead)
157 : _M_head_impl(std::
forward<_UHead>(__uhead)) { }
159 template<
typename _Alloc,
typename _UHead>
160 _Head_base(__uses_alloc1<_Alloc> __a, _UHead&& __uhead)
161 : _M_head_impl(allocator_arg, *__a._M_a, std::
forward<_UHead>(__uhead))
164 template<
typename _Alloc,
typename _UHead>
165 _Head_base(__uses_alloc2<_Alloc> __a, _UHead&& __uhead)
166 : _M_head_impl(std::
forward<_UHead>(__uhead), *__a._M_a) { }
168 static constexpr _Head&
169 _M_head(_Head_base& __b) noexcept {
return __b._M_head_impl; }
171 static constexpr
const _Head&
172 _M_head(
const _Head_base& __b) noexcept {
return __b._M_head_impl; }
185 template<std::size_t _Idx,
typename... _Elements>
192 template<std::
size_t _Idx>
195 template<std::size_t,
typename...>
friend class _Tuple_impl;
199 template<
typename _Alloc>
202 template<
typename _Alloc>
205 template<
typename _Alloc>
212 template<
typename _Tp>
216 template<
typename _El0,
typename... _El>
217 struct __is_empty_non_tuple<tuple<_El0, _El...>> :
false_type { };
220 template<
typename _Tp>
221 using __empty_not_final
222 =
typename conditional<__is_final(_Tp),
false_type,
223 __is_empty_non_tuple<_Tp>>::type;
230 template<std::size_t _Idx,
typename _Head,
typename... _Tail>
233 private _Head_base<_Idx, _Head, __empty_not_final<_Head>::value>
235 template<std::size_t,
typename...>
friend class _Tuple_impl;
238 typedef _Head_base<_Idx, _Head, __empty_not_final<_Head>::value> _Base;
240 static constexpr _Head&
241 _M_head(
_Tuple_impl& __t) noexcept {
return _Base::_M_head(__t); }
243 static constexpr
const _Head&
244 _M_head(
const _Tuple_impl& __t) noexcept {
return _Base::_M_head(__t); }
250 _M_tail(
const _Tuple_impl& __t) noexcept {
return __t; }
256 constexpr _Tuple_impl(
const _Head& __head,
const _Tail&... __tail)
259 template<
typename _UHead,
typename... _UTail,
typename =
typename
260 enable_if<
sizeof...(_Tail) ==
sizeof...(_UTail)>::type>
262 constexpr _Tuple_impl(_UHead&& __head, _UTail&&... __tail)
263 :
_Inherited(std::forward<_UTail>(__tail)...),
264 _Base(std::forward<_UHead>(__head)) { }
266 constexpr _Tuple_impl(
const _Tuple_impl&) =
default;
269 _Tuple_impl(_Tuple_impl&& __in)
273 _Base(std::forward<_Head>(_M_head(__in))) { }
275 template<
typename... _UElements>
280 template<
typename _UHead,
typename... _UTails>
284 _Base(std::forward<_UHead>
287 template<
typename _Alloc>
290 _Base(__tag, __use_alloc<_Head>(__a)) { }
292 template<
typename _Alloc>
294 const _Head& __head,
const _Tail&... __tail)
296 _Base(__use_alloc<_Head, _Alloc, _Head>(__a), __head) { }
298 template<
typename _Alloc,
typename _UHead,
typename... _UTail,
299 typename =
typename enable_if<
sizeof...(_Tail)
300 ==
sizeof...(_UTail)>::type>
302 _UHead&& __head, _UTail&&... __tail)
303 :
_Inherited(__tag, __a, std::forward<_UTail>(__tail)...),
304 _Base(__use_alloc<_Head, _Alloc, _UHead>(__a),
305 std::forward<_UHead>(__head)) { }
307 template<
typename _Alloc>
309 const _Tuple_impl& __in)
311 _Base(__use_alloc<_Head, _Alloc, _Head>(__a), _M_head(__in)) { }
313 template<
typename _Alloc>
316 :
_Inherited(__tag, __a, std::move(_M_tail(__in))),
317 _Base(__use_alloc<_Head, _Alloc, _Head>(__a),
318 std::forward<_Head>(_M_head(__in))) { }
320 template<
typename _Alloc,
typename... _UElements>
325 _Base(__use_alloc<_Head, _Alloc, _Head>(__a),
328 template<
typename _Alloc,
typename _UHead,
typename... _UTails>
333 _Base(__use_alloc<_Head, _Alloc, _UHead>(__a),
338 operator=(
const _Tuple_impl& __in)
340 _M_head(*
this) = _M_head(__in);
341 _M_tail(*
this) = _M_tail(__in);
346 operator=(_Tuple_impl&& __in)
350 _M_head(*
this) = std::forward<_Head>(_M_head(__in));
351 _M_tail(*
this) = std::move(_M_tail(__in));
355 template<
typename... _UElements>
364 template<
typename _UHead,
typename... _UTails>
368 _M_head(*
this) = std::forward<_UHead>
370 _M_tail(*
this) = std::move
377 _M_swap(_Tuple_impl& __in)
378 noexcept(noexcept(
swap(std::declval<_Head&>(),
379 std::declval<_Head&>()))
380 && noexcept(_M_tail(__in)._M_swap(_M_tail(__in))))
383 swap(_M_head(*
this), _M_head(__in));
384 _Inherited::_M_swap(_M_tail(__in));
389 template<
typename... _Elements>
399 constexpr tuple(
const _Elements&... __elements)
402 template<
typename... _UElements,
typename =
typename
404 _Elements>...>::value>::type>
406 constexpr tuple(_UElements&&... __elements)
407 :
_Inherited(std::forward<_UElements>(__elements)...) { }
409 constexpr tuple(
const tuple&) =
default;
411 constexpr tuple(tuple&&) =
default;
413 template<
typename... _UElements,
typename =
typename
415 _Elements>...>::value>::type>
420 template<
typename... _UElements,
typename =
typename
422 _Elements>...>::value>::type>
428 template<
typename _Alloc>
432 template<
typename _Alloc>
434 const _Elements&... __elements)
437 template<
typename _Alloc,
typename... _UElements,
typename =
typename
439 ==
sizeof...(_Elements)>::type>
441 _UElements&&... __elements)
442 :
_Inherited(__tag, __a, std::forward<_UElements>(__elements)...)
445 template<
typename _Alloc>
447 :
_Inherited(__tag, __a, static_cast<const _Inherited&>(__in)) { }
449 template<
typename _Alloc>
451 :
_Inherited(__tag, __a, static_cast<_Inherited&&>(__in)) { }
453 template<
typename _Alloc,
typename... _UElements,
typename =
typename
455 ==
sizeof...(_Elements)>::type>
459 static_cast<const _Tuple_impl<0, _UElements...
>&>(__in))
462 template<
typename _Alloc,
typename... _UElements,
typename =
typename
464 ==
sizeof...(_Elements)>::type>
468 static_cast<_Tuple_impl<0, _UElements...
>&&>(__in))
472 operator=(
const tuple& __in)
479 operator=(tuple&& __in)
482 static_cast<_Inherited&
>(*this) = std::move(__in);
486 template<
typename... _UElements,
typename =
typename
488 ==
sizeof...(_Elements)>::type>
496 template<
typename... _UElements,
typename =
typename
498 ==
sizeof...(_Elements)>::type>
502 static_cast<_Inherited&
>(*this) = std::move(__in);
508 noexcept(noexcept(__in._M_swap(__in)))
509 { _Inherited::_M_swap(__in); }
522 template<
typename _T1,
typename _T2>
532 constexpr tuple(
const _T1& __a1,
const _T2& __a2)
535 template<
typename _U1,
typename _U2,
typename =
typename
539 constexpr tuple(_U1&& __a1, _U2&& __a2)
540 :
_Inherited(std::forward<_U1>(__a1), std::forward<_U2>(__a2)) { }
542 constexpr tuple(
const tuple&) =
default;
544 constexpr tuple(tuple&&) =
default;
546 template<
typename _U1,
typename _U2,
typename =
typename
552 template<
typename _U1,
typename _U2,
typename =
typename
558 template<
typename _U1,
typename _U2,
typename =
typename
564 template<
typename _U1,
typename _U2,
typename =
typename
569 std::forward<_U2>(__in.
second)) { }
573 template<
typename _Alloc>
577 template<
typename _Alloc>
579 const _T1& __a1,
const _T2& __a2)
582 template<
typename _Alloc,
typename _U1,
typename _U2>
583 tuple(
allocator_arg_t __tag,
const _Alloc& __a, _U1&& __a1, _U2&& __a2)
584 :
_Inherited(__tag, __a, std::forward<_U1>(__a1),
585 std::forward<_U2>(__a2)) { }
587 template<
typename _Alloc>
589 :
_Inherited(__tag, __a, static_cast<const _Inherited&>(__in)) { }
591 template<
typename _Alloc>
593 :
_Inherited(__tag, __a, static_cast<_Inherited&&>(__in)) { }
595 template<
typename _Alloc,
typename _U1,
typename _U2>
602 template<
typename _Alloc,
typename _U1,
typename _U2>
607 template<
typename _Alloc,
typename _U1,
typename _U2>
612 template<
typename _Alloc,
typename _U1,
typename _U2>
615 std::forward<_U2>(__in.
second)) { }
618 operator=(
const tuple& __in)
625 operator=(tuple&& __in)
628 static_cast<_Inherited&
>(*this) = std::move(__in);
632 template<
typename _U1,
typename _U2>
640 template<
typename _U1,
typename _U2>
644 static_cast<_Inherited&
>(*this) = std::move(__in);
648 template<
typename _U1,
typename _U2>
652 this->_M_head(*
this) = __in.
first;
653 this->_M_tail(*this)._M_head(*
this) = __in.
second;
657 template<
typename _U1,
typename _U2>
661 this->_M_head(*
this) = std::forward<_U1>(__in.
first);
662 this->_M_tail(*this)._M_head(*
this) = std::forward<_U2>(__in.
second);
668 noexcept(noexcept(__in._M_swap(__in)))
669 { _Inherited::_M_swap(__in); }
674 template<std::
size_t __i,
typename _Tp>
681 template<std::size_t __i,
typename _Head,
typename... _Tail>
688 template<
typename _Head,
typename... _Tail>
694 template<std::
size_t __i,
typename _Tp>
701 template<std::
size_t __i,
typename _Tp>
702 struct tuple_element<__i, volatile _Tp>
705 add_volatile<typename tuple_element<__i, _Tp>::type>::type type;
708 template<std::
size_t __i,
typename _Tp>
709 struct tuple_element<__i, const volatile _Tp>
712 add_cv<typename tuple_element<__i, _Tp>::type>::type type;
716 template<
typename _Tp>
719 template<
typename _Tp>
720 struct tuple_size<const _Tp>
721 :
public integral_constant<
722 typename remove_cv<decltype(tuple_size<_Tp>::value)>::type,
723 tuple_size<_Tp>::value> { };
725 template<
typename _Tp>
726 struct tuple_size<volatile _Tp>
727 :
public integral_constant<
728 typename remove_cv<decltype(tuple_size<_Tp>::value)>::type,
729 tuple_size<_Tp>::value> { };
731 template<
typename _Tp>
732 struct tuple_size<const volatile _Tp>
733 :
public integral_constant<
734 typename remove_cv<decltype(tuple_size<_Tp>::value)>::type,
735 tuple_size<_Tp>::value> { };
738 template<
typename... _Elements>
742 template<std::size_t __i,
typename _Head,
typename... _Tail>
743 constexpr
typename __add_ref<_Head>::type
747 template<std::size_t __i,
typename _Head,
typename... _Tail>
748 constexpr
typename __add_c_ref<_Head>::type
749 __get_helper(
const _Tuple_impl<__i, _Head, _Tail...>& __t) noexcept
750 {
return _Tuple_impl<__i, _Head, _Tail...>::_M_head(__t); }
755 template<std::size_t __i,
typename... _Elements>
756 constexpr
typename __add_ref<
757 typename tuple_element<__i, tuple<_Elements...>>::type
759 get(tuple<_Elements...>& __t) noexcept
760 {
return std::__get_helper<__i>(__t); }
762 template<std::size_t __i,
typename... _Elements>
763 constexpr
typename __add_c_ref<
764 typename tuple_element<__i, tuple<_Elements...>>::type
766 get(
const tuple<_Elements...>& __t) noexcept
767 {
return std::__get_helper<__i>(__t); }
769 template<std::size_t __i,
typename... _Elements>
770 constexpr
typename __add_r_ref<
771 typename tuple_element<__i, tuple<_Elements...>>::type
773 get(tuple<_Elements...>&& __t) noexcept
775 tuple<_Elements...>>::type&&>(get<__i>(__t)); }
778 template<std::size_t __check_equal_size, std::size_t __i, std::size_t __j,
779 typename _Tp,
typename _Up>
780 struct __tuple_compare;
782 template<std::
size_t __i, std::
size_t __j,
typename _Tp,
typename _Up>
783 struct __tuple_compare<0, __i, __j, _Tp, _Up>
785 static constexpr
bool
786 __eq(
const _Tp& __t,
const _Up& __u)
788 return (get<__i>(__t) == get<__i>(__u) &&
789 __tuple_compare<0, __i + 1, __j, _Tp, _Up>::__eq(__t, __u));
792 static constexpr
bool
793 __less(
const _Tp& __t,
const _Up& __u)
795 return ((get<__i>(__t) < get<__i>(__u))
796 || !(get<__i>(__u) < get<__i>(__t)) &&
797 __tuple_compare<0, __i + 1, __j, _Tp, _Up>::__less(__t, __u));
801 template<std::
size_t __i,
typename _Tp,
typename _Up>
802 struct __tuple_compare<0, __i, __i, _Tp, _Up>
804 static constexpr
bool
805 __eq(
const _Tp&,
const _Up&) {
return true; }
807 static constexpr
bool
808 __less(
const _Tp&,
const _Up&) {
return false; }
811 template<
typename... _TElements,
typename... _UElements>
813 operator==(
const tuple<_TElements...>& __t,
814 const tuple<_UElements...>& __u)
816 typedef tuple<_TElements...> _Tp;
817 typedef tuple<_UElements...> _Up;
818 return bool(__tuple_compare<tuple_size<_Tp>::value - tuple_size<_Up>::value,
819 0, tuple_size<_Tp>::value, _Tp, _Up>::__eq(__t, __u));
822 template<
typename... _TElements,
typename... _UElements>
824 operator<(
const tuple<_TElements...>& __t,
825 const tuple<_UElements...>& __u)
827 typedef tuple<_TElements...> _Tp;
828 typedef tuple<_UElements...> _Up;
829 return bool(__tuple_compare<tuple_size<_Tp>::value - tuple_size<_Up>::value,
830 0, tuple_size<_Tp>::value, _Tp, _Up>::__less(__t, __u));
833 template<
typename... _TElements,
typename... _UElements>
834 inline constexpr
bool
835 operator!=(
const tuple<_TElements...>& __t,
836 const tuple<_UElements...>& __u)
837 {
return !(__t == __u); }
839 template<
typename... _TElements,
typename... _UElements>
840 inline constexpr
bool
841 operator>(
const tuple<_TElements...>& __t,
842 const tuple<_UElements...>& __u)
843 {
return __u < __t; }
845 template<
typename... _TElements,
typename... _UElements>
846 inline constexpr
bool
847 operator<=(
const tuple<_TElements...>& __t,
848 const tuple<_UElements...>& __u)
849 {
return !(__u < __t); }
851 template<
typename... _TElements,
typename... _UElements>
852 inline constexpr
bool
853 operator>=(
const tuple<_TElements...>& __t,
854 const tuple<_UElements...>& __u)
855 {
return !(__t < __u); }
858 template<
typename... _Elements>
859 constexpr tuple<typename __decay_and_strip<_Elements>::__type...>
860 make_tuple(_Elements&&... __args)
862 typedef tuple<typename __decay_and_strip<_Elements>::__type...>
864 return __result_type(std::forward<_Elements>(__args)...);
867 template<
typename... _Elements>
868 tuple<_Elements&&...>
869 forward_as_tuple(_Elements&&... __args) noexcept
870 {
return tuple<_Elements&&...>(std::forward<_Elements>(__args)...); }
876 template<
typename... _Tps>
877 struct __is_tuple_like_impl<tuple<_Tps...>> :
true_type
880 template<
typename _T1,
typename _T2>
881 struct __is_tuple_like_impl<pair<_T1, _T2>> :
true_type
884 template<
typename _Tp, std::
size_t _Nm>
885 struct __is_tuple_like_impl<array<_Tp, _Nm>> :
true_type
889 template<
typename _Tp>
890 struct __is_tuple_like
891 :
public __is_tuple_like_impl<typename std::remove_cv
892 <typename std::remove_reference<_Tp>::type>::type>::type
897 template<std::size_t... _Indexes>
900 typedef _Index_tuple<_Indexes...,
sizeof...(_Indexes)> __next;
904 template<std::
size_t _Num>
905 struct _Build_index_tuple
907 typedef typename _Build_index_tuple<_Num - 1>::__type::__next __type;
911 struct _Build_index_tuple<0>
913 typedef _Index_tuple<> __type;
916 template<std::
size_t,
typename,
typename, std::
size_t>
917 struct __make_tuple_impl;
919 template<std::size_t _Idx,
typename _Tuple,
typename... _Tp,
921 struct __make_tuple_impl<_Idx, tuple<_Tp...>, _Tuple, _Nm>
923 typedef typename __make_tuple_impl<_Idx + 1, tuple<_Tp...,
928 template<std::size_t _Nm,
typename _Tuple,
typename... _Tp>
929 struct __make_tuple_impl<_Nm, tuple<_Tp...>, _Tuple, _Nm>
931 typedef tuple<_Tp...> __type;
934 template<
typename _Tuple>
935 struct __do_make_tuple
936 :
public __make_tuple_impl<0, tuple<>, _Tuple,
937 std::tuple_size<_Tuple>::value>
941 template<
typename _Tuple>
943 :
public __do_make_tuple<typename std::remove_cv
944 <typename std::remove_reference<_Tuple>::type>::type>
948 template<
typename...>
949 struct __combine_tuples;
952 struct __combine_tuples<>
954 typedef tuple<> __type;
957 template<
typename... _Ts>
958 struct __combine_tuples<tuple<_Ts...>>
960 typedef tuple<_Ts...> __type;
963 template<
typename... _T1s,
typename... _T2s,
typename... _Rem>
964 struct __combine_tuples<tuple<_T1s...>, tuple<_T2s...>, _Rem...>
966 typedef typename __combine_tuples<tuple<_T1s..., _T2s...>,
967 _Rem...>::__type __type;
971 template<
typename... _Tpls>
972 struct __tuple_cat_result
974 typedef typename __combine_tuples
980 template<
typename...>
981 struct __make_1st_indices;
984 struct __make_1st_indices<>
986 typedef std::_Index_tuple<> __type;
989 template<
typename _Tp,
typename... _Tpls>
990 struct __make_1st_indices<_Tp, _Tpls...>
993 typename std::remove_reference<_Tp>::type>::value>::__type __type;
999 template<
typename _Ret,
typename _Indices,
typename... _Tpls>
1000 struct __tuple_concater;
1002 template<
typename _Ret, std::size_t... _Is,
typename _Tp,
typename... _Tpls>
1003 struct __tuple_concater<_Ret, std::_Index_tuple<_Is...>, _Tp, _Tpls...>
1005 template<
typename... _Us>
1006 static constexpr _Ret
1007 _S_do(_Tp&& __tp, _Tpls&&... __tps, _Us&&... __us)
1009 typedef typename __make_1st_indices<_Tpls...>::__type __idx;
1010 typedef __tuple_concater<_Ret, __idx, _Tpls...> __next;
1011 return __next::_S_do(std::forward<_Tpls>(__tps)...,
1012 std::forward<_Us>(__us)...,
1013 std::get<_Is>(std::forward<_Tp>(__tp))...);
1017 template<
typename _Ret>
1018 struct __tuple_concater<_Ret, std::_Index_tuple<>>
1020 template<
typename... _Us>
1021 static constexpr _Ret
1022 _S_do(_Us&&... __us)
1024 return _Ret(std::forward<_Us>(__us)...);
1029 template<
typename... _Tpls,
typename =
typename
1030 enable_if<__and_<__is_tuple_like<_Tpls>...>::value>::type>
1032 tuple_cat(_Tpls&&... __tpls)
1033 ->
typename __tuple_cat_result<_Tpls...>::__type
1035 typedef typename __tuple_cat_result<_Tpls...>::__type __ret;
1036 typedef typename __make_1st_indices<_Tpls...>::__type __idx;
1037 typedef __tuple_concater<__ret, __idx, _Tpls...> __concater;
1038 return __concater::_S_do(std::forward<_Tpls>(__tpls)...);
1042 template<
typename... _Elements>
1043 inline tuple<_Elements&...>
1044 tie(_Elements&... __args) noexcept
1045 {
return tuple<_Elements&...>(__args...); }
1048 template<
typename... _Elements>
1050 swap(tuple<_Elements...>& __x, tuple<_Elements...>& __y)
1056 struct _Swallow_assign
1059 const _Swallow_assign&
1060 operator=(
const _Tp&)
const
1064 const _Swallow_assign ignore{};
1067 template<
typename... _Types,
typename _Alloc>
1071 template<
class _T1,
class _T2>
1072 template<
typename... _Args1,
typename... _Args2>
1077 :
pair(__first, __second,
1078 typename _Build_index_tuple<sizeof...(_Args1)>::__type(),
1079 typename _Build_index_tuple<sizeof...(_Args2)>::__type())
1082 template<
class _T1,
class _T2>
1083 template<
typename... _Args1, std::size_t... _Indexes1,
1084 typename... _Args2, std::size_t... _Indexes2>
1087 pair(tuple<_Args1...>& __tuple1, tuple<_Args2...>& __tuple2,
1088 _Index_tuple<_Indexes1...>, _Index_tuple<_Indexes2...>)
1089 : first(std::
forward<_Args1>(std::get<_Indexes1>(__tuple1))...),
1090 second(std::
forward<_Args2>(std::get<_Indexes2>(__tuple2))...)
1095 _GLIBCXX_END_NAMESPACE_VERSION
1100 #endif // _GLIBCXX_TUPLE
_T1 first
second_type is the second bound type
Define a member typedef type only if a boolean constant is true.
tuple< _Elements &...> tie(_Elements &...__args) noexcept
tie
__combine_tuples< typename __make_tuple< _Tpls >::__type...>::__type __type
tuple_cat
constexpr _Tp && forward(typename std::remove_reference< _Tp >::type &__t) noexcept
Forward an lvalue.
Struct holding two objects of arbitrary type.
Declare uses_allocator so it can be specialized in <queue> etc.
integral_constant< bool, false > false_type
The type used as a compile-time boolean with false value.
is_nothrow_move_constructible
constexpr pair()
second is a copy of the second object
integral_constant< bool, true > true_type
The type used as a compile-time boolean with true value.
_T2 second
first is a copy of the first object
is_nothrow_move_assignable
void swap(function< _Res(_Args...)> &__x, function< _Res(_Args...)> &__y)
Swap the targets of two polymorphic function object wrappers.
Primary class template, tuple.