std::ranges::input_range - cppreference.com

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

range_size_trange_difference_trange_value_t
elements_of (C++23)

(C++23)(C++23)

(C++23)

(仅用于阐述*)(C++26)

empty_viewviews::empty

single_viewviews::single

basic_istream_viewviews::istream

iota_viewviews::iota
views::indices (C++26)

repeat_viewviews::repeat (C++23)(C++23)

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
as_input_viewviews::as_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

(C++23 前) (C++23)

simple-view
non-propagating-cache

在标头 `<ranges>` 定义
template< class T > concept input_range = ranges::range<T> && std::input_iterator<ranges::iterator_t<T>>;		(C++20 起)

input_range 概念是 range 的精化，对于实现它的类型，ranges::begin 返回 input_iterator 的实现。