std::ranges::transform_view<V,F>::end

 

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)

诊断库

内存管理库

元编程库(C++11)

通用工具库

容器库

迭代器库

范围库(C++20)

算法库

字符串库

文本处理库

数值库

日期和时间库

输入/输出库

文件系统库(C++17)

并发支持库(C++11)

执行控制库(C++26)

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 reserve_hint (C++26)   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    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
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 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 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::transform_view

成员函数

transform_view::transform_view

transform_view::base

transform_view::begin

transform_view::end

transform_view::size

transform_view::reserve_hint (C++26)

推导指引

迭代器

transform_view::iterator::iterator

transform_view::iterator::base

transform_view::iterator::operator*

transform_view::iterator::operator[]

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

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

operator+(transform_view::iterator) operator-(transform_view::iterator)

iter_move(transform_view::iterator)

哨位

transform_view::sentinel::sentinel

transform_view::sentinel::base

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

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

 

constexpr/*sentinel*/<false> end();	(1)	(C++20 起)
constexpr/*iterator*/<false> end() requires ranges::common_range<V>;	(2)	(C++20 起)
constexpr/*sentinel*/<true> end()const     requires ranges::range<const V>&&              std::regular_invocable<const F&, ranges::range_reference_t<const V>>;	(3)	(C++20 起)
constexpr/*iterator*/<true> end()const     requires ranges::common_range<const V>&&              std::regular_invocable<const F&, ranges::range_reference_t<const V>>;	(4)	(C++20 起)

返回表示 transform_view 末尾的哨位或迭代器。

等价于：

1)return sentinel<false>{ranges::end(base_);。

2)return iterator<false>{*this, ranges::end(base_)};。

3)return sentinel<true>{ranges::end(base_)};。

4)return iterator<true>{*this, ranges::end(base_)};。

参数

（无）

返回值

1,3) 与尾迭代器比较相等的哨位。

2,4) 指向末元素后一元素的迭代器。

注解

当且仅当底层视图为 common_range 时 end() 返回迭代器：tranform_view<V,F> 凡在 V 实现 common_range 时亦如此。

参阅

begin	返回指向起始的迭代器 (公开成员函数)
ranges::end (C++20)	返回指示范围结尾的哨位 (定制点对象)