operator-(ranges::elements_view::sentinel)

 

C++

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技术规范

 

范围库

范围访问
begin cbegin end cend	rbegin crbegin rend crend	size ssize data cdata	empty
范围原语
iterator_tsentinel_t	range_size_trange_difference_t	range_reference_trange_rvalue_reference_t	range_value_t
悬垂迭代器处理
dangling	borrowed_iterator_t	borrowed_subrange_t
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
视图
view_interface	subrange
范围工厂
empty_viewviews::empty	single_viewviews::single	iota_viewviews::iota	basic_istream_viewviews::istream
适配器
views::all_tviews::all ref_view owning_view common_viewviews::common reverse_viewviews::reverse views::counted zip_viewviews::zip (C++23)(C++23)	take_viewviews::take take_while_viewviews::take_while drop_viewviews::drop drop_while_viewviews::drop_while zip_transform_viewviews::zip_transform (C++23)(C++23)	elements_viewviews::elements keys_viewviews::keys values_viewviews::values transform_viewviews::transform adjacent_viewviews::adjacent (C++23)(C++23)	filter_viewviews::filter join_viewviews::join split_viewviews::split lazy_split_viewviews::lazy_split adjacent_transform_viewviews::adjacent_transform (C++23)(C++23)
范围适配器对象
范围适配器闭包对象
辅助项
copyable-box	simple-view

 

std::ranges::elements_view

成员函数

elements_view::elements_view (C++20)

elements_view::base (C++20)

elements_view::begin (C++20)

elements_view::end (C++20)

elements_view::size (C++20)

嵌套类

迭代器

elements_view::iterator::iterator (C++20)

elements_view::iterator::base (C++20)

elements_view::iterator::operator* (C++20)

elements_view::iterator::operator[] (C++20)

elements_view::iterator::operator++ elements_view::iterator::operator++(int) elements_view::iterator::operator-- elements_view::iterator::operator--(int) elements_view::iterator::operator+= elements_view::iterator::operator-= (C++20)(C++20)(C++20)(C++20)(C++20)(C++20)

operator==(elements_view::iterator) operator<(elements_view::iterator) operator>(elements_view::iterator) operator<=(elements_view::iterator) operator>=(elements_view::iterator) operator<=>(elements_view::iterator) (C++20)(C++20)(C++20)(C++20)(C++20)(C++20)

operator+(elements_view::iterator) operator-(elements_view::iterator) (C++20)(C++20)

哨位

elements_view::sentinel::sentinel (C++20)

elements_view::sentinel::base (C++20)

operator==(elements_view::iterator,elements_view::sentinel) (C++20)

operator-(elements_view::iterator,elements_view::sentinel) (C++20)

 

template< bool OtherConst >   requires std::sized_sentinel_for<ranges::sentinel_t<Base>,                                    ranges::iterator_t</*maybe-const*/<OtherConst, V>>> friend constexpr ranges::range_difference_t</*maybe-const*/<OtherConst, V>>   operator-( const /*iterator*/<OtherConst>& x, const /*sentinel*/& y );	(1)	(C++20 起)
template< bool OtherConst >   requires std::sized_sentinel_for<ranges::sentinel_t<Base>,                                    ranges::iterator_t</*maybe-const*/<OtherConst, V>>> friend constexpr ranges::range_difference_t</*maybe-const*/<OtherConst, V>>   operator-( const /*sentinel*/& y, const /*iterator*/<OtherConst>& x );	(2)	(C++20 起)

计算 x 的底层迭代器与 y 的底层哨位间的距离。

这些函数对通常无限定或有限定查找不可见，而只能在 elements_view::sentinel<Const> 为参数的关联类时由实参依赖查找找到。

参数

x	-	迭代器
y	-	哨位

返回值

1) x.base() - y.base()

2) y.base() - x.base()