std::ranges::stride_view<V>::iterator<Const>::operator++,--,+=,-=

 

C++

编译器支持

自立实现与有宿主实现

语言

标准库

标准库标头

具名要求

功能特性测试宏 (C++20)

语言支持库

概念库 (C++20)

元编程库 (C++11)

诊断库

通用工具库

字符串库

容器库

迭代器库

范围库 (C++20)

算法库

数值库

本地化库

输入/输出库

文件系统库 (C++17)

正则表达式库 (C++11)

并发支持库 (C++11)

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)

悬垂迭代器处理 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 (C++23 前)  (C++23)	simple-view non-propagating-cache

 

std::ranges::stride_view

成员函数

stride_view::stride_view

stride_view::base

stride_view::stride

stride_view::begin

stride_view::end

stride_view::size

推导指引

迭代器

成员函数

stride_view::iterator::iterator

stride_view::iterator::base

stride_view::iterator::operator*

stride_view::iterator::operator[]

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

非成员函数

operator==(std::default_sentinel_t) operator==(stride_view::iterator) operator<(stride_view::iterator) operator>(stride_view::iterator) operator<=(stride_view::iterator) operator>=(stride_view::iterator) operator<=>(stride_view::iterator)

operator+(stride_view::iterator) operator-(stride_view::iterator)

iter_move(stride_view::iterator)

iter_swap(stride_view::iterator)

 

constexpr /*iterator*/& operator++();	(1)	(C++23 起)
constexpr void operator++( int );	(2)	(C++23 起)
constexpr /*iterator*/ operator++( int )     requires ranges::forward_range<Base>;	(3)	(C++23 起)
constexpr /*iterator*/& operator--()     requires ranges::bidirectional_range<Base>;	(4)	(C++23 起)
constexpr /*iterator*/ operator--( int )     requires ranges::bidirectional_range<Base>;	(5)	(C++23 起)
constexpr /*iterator*/& operator+=( difference_type n )     requires ranges::random_access_range<Base>;	(6)	(C++23 起)
constexpr /*iterator*/& operator-=( difference_type n )     requires ranges::random_access_range<Base>;	(7)	(C++23 起)

增加或减小迭代器。

令 current_，end_，stride_，与 missing_ 为迭代器的数据成员，

1) 等价于

missing_ = ranges::advance(current_, stride_, end_);
return *this

current_ 调用前不能等于 end_。

2) 等价于 ++*this;。

3) 等价于 auto tmp = *this; ++*this; return tmp;。

4) 等价于

ranges::advance(current_, missing_ - stride_);
missing_ = 0;
return *this;

5) 等价于 auto tmp = *this; --*this; return tmp;。

6) 等价于

if (n > 0)
{
    ranges::advance(current_, stride_ * (n - 1));
    missing_ = ranges::advance(current_, stride_, end_);
}
else if (n < 0)
{
    ranges::advance(current_, stride_ * n + missing_);
    missing_ = 0;
}
 
return *this;

如果 n > 0，那么调用此函数前 ranges::distance(current_, end_) 必须大于 stride_ * (n - 1)。

请注意，如果 n < 0，那么 ranges::distance(current_, end_) 总是大于（非正）stride_ * (n - 1)。

7) 等价于 return *this += -n;

参数

n

-

相对于当前位置的位移

返回值

1,4,6,7) *this

2) （无）

3,5) *this 被修改前的副本

参阅

operator+operator- (C++23)

performs iterator arithmetic (函数)