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

 

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技术规范

符号索引

外部库

 

范围库 (Ranges library)

范围访问 begin cbegin   end cend rbegin crbegin   rend crend size ssize   data cdata reserve_hint (C++26)   empty

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

悬空迭代器处理 (Dangling iterator handling) dangling borrowed_iterator_t borrowed_subrange_t

范围原语 (Range primitives)
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 concepts)
range borrowed_range    common_range	sized_range viewable_range    view	input_range output_range forward_range	bidirectional_range    random_access_range contiguous_range	approximately_sized_range (C++26) constant_range (C++23)

视图
view_interface	subrange

范围工厂 (Range factories)
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 (Range adaptors)
views::all_tviews::all as_rvalue_viewviews::as_rvalue (C++23)(C++23)   filter_viewviews::filter transform_viewviews::transform take_viewviews::take take_while_viewviews::take_while common_viewviews::common views::counted to_input_viewviews::to_input (C++26)(C++26)	ref_view drop_viewviews::drop drop_while_viewviews::drop_while lazy_split_viewviews::lazy_split split_viewviews::split join_viewviews::join join_with_viewviews::join_with (C++23)(C++23)   concat_viewviews::concat (C++26)(C++26) cache_latest_viewviews::cache_latest (C++26)(C++26)	owning_view 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 (Range generators) std::generator (C++23)

范围适配器闭包对象 (Range adaptor closure objects) range_adaptor_closure (C++23)

范围适配器对象 (Range adaptor objects)

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

 

std::ranges::chunk_view

成员函数
chunk_view::chunk_view
chunk_view::base
chunk_view::begin
chunk_view::end
chunk_view::size
input_range 的类 推导指引 outer-iterator chunk_view::outer-iterator::outer-iterator chunk_view::outer-iterator::operator= chunk_view::outer-iterator::operator* chunk_view::outer-iterator::operator++ chunk_view::outer-iterator::operator++(int) operator==(chunk_view::outer-iterator) operator-(chunk_view::outer-iterator) outer-iterator::value_type chunk_view::outer-iterator::value_type::value_type   chunk_view::outer-iterator::value_type::begin chunk_view::outer-iterator::value_type::end chunk_view::outer-iterator::value_type::size inner-iterator chunk_view::inner-iterator::inner-iterator chunk_view::inner-iterator::operator= chunk_view::inner-iterator::base chunk_view::inner-iterator::operator* chunk_view::inner-iterator::operator++ chunk_view::inner-iterator::operator++(int) operator==(chunk_view::inner-iterator) operator-(chunk_view::inner-iterator) iter_move(chunk_view::inner-iterator) iter_swap(chunk_view::inner-iterator)	的类模板 forward_range iterator chunk_view::iterator::iterator chunk_view::iterator::base chunk_view::iterator::operator* chunk_view::iterator::operator[] chunk_view::iterator::operator++ chunk_view::iterator::operator++(int) chunk_view::iterator::operator-- chunk_view::iterator::operator--(int) chunk_view::iterator::operator+= chunk_view::iterator::operator-= operator==(chunk_view::iterator) operator<(chunk_view::iterator) operator>(chunk_view::iterator) operator<=(chunk_view::iterator) operator>=(chunk_view::iterator) operator<=>(chunk_view::iterator) operator+(chunk_view::iterator) operator-(chunk_view::iterator)

 

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

前进或后退迭代器。

令 current_、end_ 和 n_ 为 chunk_view::iterator 的底层数据成员。

1) 等价于

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

调用前，表达式 current_ != end_ 必须为 true，否则行为未定义。

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

3) 等效于

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

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

5) 等同于

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

若 x 为正，则在调用前表达式 ranges::distance(current_, end_) > n_ * (x - 1) 必须为 true（即，通俗地说，所请求的块应在底层序列的“内部”）。若 x 为负，此前置条件始终满足。

6) 等价于：return *this += -x;。

参数

x

-

一个相对于当前位置的位置

返回值

1,3,5,6) *this

2,4) 改变前 *this 的副本

参阅

operator+operator- (C++23)

进行迭代器算术 (函数)