std::ranges::drop_while_view<V,Pred>::end

 

C++

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自立实现与有宿主实现

语言

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标准库标头

具名要求

功能特性测试宏 (C++20)

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概念库 (C++20)

元编程库 (C++11)

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通用工具库

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范围库 (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
范围转换器
to (C++23)
范围原语
range_size_trange_difference_t range_value_t	range_reference_trange_const_reference_trange_rvalue_reference_t (C++23)	iterator_tconst_iterator_tsentinel_t (C++23)
悬垂迭代器处理
dangling	borrowed_iterator_t	borrowed_subrange_t
范围概念
range borrowed_range    sized_range constant_range (C++23)	common_range view viewable_range	input_range output_range forward_range	bidirectional_range random_access_range contiguous_range
视图
view_interface	subrange
范围工厂
empty_viewviews::empty single_viewviews::single	iota_viewviews::iota repeat_viewviews::repeat (C++23)(C++23)	basic_istream_viewviews::istream cartesian_product_viewviews::cartesian_product_view (C++23)(C++23)
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	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)
范围适配器对象
范围适配器闭包对象
range_adaptor_closure (C++23)
辅助项
copyable-box	simple-view

 

std::ranges::drop_while_view

成员函数

drop_while_view::drop_while_view (C++20)

drop_while_view::base (C++20)

drop_while_view::pred (C++20)

drop_while_view::begin (C++20)

drop_while_view::end (C++20)

推导指引

 

constexpr auto end();		(C++20 起)

返回表示 drop_while_view 末尾的迭代器或哨位。

等效于返回 ranges::end(base_) ，其中 base_ 为底层视图。

参数

（无）

返回值

表示 drop_while_view 末尾的迭代器或哨位。

示例

运行此代码

#include <array>
#include <iostream>
#include <ranges>
 
int main()
{
    constexpr std::array data{ 0, -1, -2, 3, 1, 4, 1, 5 };
 
    auto view = std::ranges::drop_while_view{
        data, [](int x) { return x <= 0; }
    };
 
    for (auto it = view.begin(); it != view.end(); ++it) {
        std::cout << *it << ' ';
    }
    std::cout << '\n';
}

输出：

3 1 4 1 5

参阅

begin (C++20)

返回指向起始的迭代器 (公开成员函数)