operator==,<,>,<=,>=,<=>(ranges::adjacent_view::iterator)

 

C++

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功能测试宏 (C++20)

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技术规范

符号索引

外部库

 

范围库

范围访问 begin cbegin   end cend rbegin crbegin   rend crend size ssize   data cdata empty

范围转换 std::from_range_t std::from_range (C++23)(C++23)     to (C++23)

悬空迭代器处理 dangling borrowed_iterator_t borrowed_subrange_t

范围原语
range_size_trange_difference_trange_value_t elements_of (C++23)	iterator_tconst_iterator_tsentinel_tconst_sentinel_t (C++23)(C++23)	range_reference_trange_const_reference_trange_rvalue_reference_trange_common_reference_t (C++23)

范围概念
range borrowed_range    sized_range	common_range view viewable_range	input_range output_range forward_range	bidirectional_range    random_access_range contiguous_range	constant_range (C++23)

视图
view_interface	subrange

范围工厂
empty_viewviews::empty	single_viewviews::single	basic_istream_viewviews::istream	iota_viewviews::iota	repeat_viewviews::repeat (C++23)(C++23)

范围适配器
views::all_tviews::all ref_view owning_view as_rvalue_viewviews::as_rvalue (C++23)(C++23)   filter_viewviews::filter transform_viewviews::transform take_viewviews::take take_while_viewviews::take_while concat_viewviews::concat (C++26)(C++26)	drop_viewviews::drop drop_while_viewviews::drop_while join_viewviews::join join_with_viewviews::join_with (C++23)(C++23)   lazy_split_viewviews::lazy_split split_viewviews::split views::counted common_viewviews::common	reverse_viewviews::reverse as_const_viewviews::as_const (C++23)(C++23) elements_viewviews::elements keys_viewviews::keys values_viewviews::values enumerate_viewviews::enumerate (C++23)(C++23) zip_viewviews::zip (C++23)(C++23) zip_transform_viewviews::zip_transform (C++23)(C++23)	adjacent_viewviews::adjacent (C++23)(C++23) views::pairwise (C++23) adjacent_transform_viewviews::adjacent_transform (C++23)(C++23) views::pairwise_transform (C++23) chunk_viewviews::chunk (C++23)(C++23) slide_viewviews::slide (C++23)(C++23) chunk_by_viewviews::chunk_by (C++23)(C++23) stride_viewviews::stride (C++23)(C++23) cartesian_product_viewviews::cartesian_product (C++23)(C++23)

范围生成器 std::generator (C++23)

范围适配器闭包对象 range_adaptor_closure (C++23)

范围适配器对象

辅助项
copyable-box movable-box (直到 C++23)  (C++23)	simple-view non-propagating-cache

 

std::ranges::adjacent_view

成员函数

adjacent_view::adjacent_view

adjacent_view::begin

adjacent_view::end

adjacent_view::size

迭代器

成员函数

adjacent_view::iterator::iterator

adjacent_view::iterator::operator*

adjacent_view::iterator::operator[]

adjacent_view::iterator::operator++ adjacent_view::iterator::operator++(int) adjacent_view::iterator::operator-- adjacent_view::iterator::operator--(int) adjacent_view::iterator::operator+= adjacent_view::iterator::operator-=

非成员函数

operator==(adjacent_view::iterator) operator<(adjacent_view::iterator) operator>(adjacent_view::iterator) operator<=(adjacent_view::iterator) operator>=(adjacent_view::iterator) operator<=>(adjacent_view::iterator)

operator+(adjacent_view::iterator) operator-(adjacent_view::iterator)

iter_move(adjacent_view::iterator)

iter_swap(adjacent_view::iterator)

哨兵

成员函数

adjacent_view::sentinel::sentinel

非成员函数

operator==(adjacent_view::iterator,adjacent_view::sentinel)

operator-(adjacent_view::iterator,adjacent_view::sentinel)

 

friend constexpr bool operator==( const /*iterator*/& x, const /*iterator*/& y );	(1)	(自 C++23)
friend constexpr bool operator<( const /*iterator*/& x, const /*iterator*/& y )     requires ranges::random_access_range<Base>;	(2)	(自 C++23)
friend constexpr bool operator>( const /*iterator*/& x, const /*iterator*/& y )     requires ranges::random_access_range<Base>;	(3)	(自 C++23)
friend constexpr bool operator<=( const /*iterator*/& x, const /*iterator*/& y )     requires ranges::random_access_range<Base>;	(4)	(自 C++23)
friend constexpr bool operator>=( const /*iterator*/& x, const /*iterator*/& y )     requires ranges::random_access_range<Base>;	(5)	(自 C++23)
friend constexpr auto operator<=>( const /*iterator*/& x, const /*iterator*/& y )     requires ranges::random_access_range<Base> &&              std::three_way_comparable<ranges::iterator_t<Base>>;	(6)	(自 C++23)

比较底层迭代器。设 current_ 为底层迭代器数组。

1) 等效于 return x.current_.back() == y.current_.back().

2) 等效于 return x.current_.back() < y.current_.back().

3) 等效于 return y < x;.

4) 等效于 return !(y < x);.

5) 等效于 return !(x < y);.

6) 等效于 return x.base() <=> y.base();.

这些函数对普通的 非限定 或 限定查找 不可视，并且只能通过 参数依赖查找 在 std::ranges::adjacent_view::iterator<Const> 是参数的关联类时找到。

!= 运算符从 operator== 合成。

参数

x, y

-

要比较的迭代器

返回值

比较的结果。

另请参阅

operator== (C++23)

比较哨兵与从 adjacent_view::begin 返回的迭代器 (函数)