std::ranges::iterator_t, std::ranges::const_iterator_t, std::ranges::sentinel_t, std::ranges::range_size_t, std::ranges::range_difference_t, std::ranges::range_value_t, std::ranges::range_reference_t, std::ranges::range_const_reference_t

 

C++

Compiler support

Freestanding and hosted

Language

Standard library headers

Named requirements

Feature test macros (C++20)

Language support library

Concepts library (C++20)

Metaprogramming library (C++11)

Diagnostics library

General utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Localizations library

Input/output library

Filesystem library (C++17)

Regular expressions library (C++11)

Concurrency support library (C++11)

Technical specifications

Symbols index

External libraries

 

Ranges library

Range access
begin cbegin end cend	rbegin crbegin rend crend	size ssize data cdata	empty
Range conversions
to (C++23)
Range primitives
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)
Dangling iterator handling
dangling	borrowed_iterator_t	borrowed_subrange_t
Range concepts
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
Views
view_interface	subrange
Factories
empty_viewviews::empty iota_viewviews::iota	single_viewviews::single basic_istream_viewviews::istream	repeat_viewviews::repeat (C++23)(C++23)
Adaptors
ref_view views::all_tviews::all common_viewviews::common owning_view views::counted reverse_viewviews::reverse zip_viewviews::zip (C++23)(C++23) as_const_viewviews::as_const (C++23)(C++23) as_rvalue_viewviews::as_rvalue (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) adjacent_transform_viewviews::adjacent_transform (C++23)(C++23)   cartesian_product_viewviews::cartesian_product (C++23)(C++23)	elements_viewviews::elements keys_viewviews::keys values_viewviews::values transform_viewviews::transform adjacent_viewviews::adjacent (C++23)(C++23) slide_viewviews::slide (C++23)(C++23) stride_viewviews::stride (C++23)(C++23)	filter_viewviews::filter join_viewviews::join split_viewviews::split lazy_split_viewviews::lazy_split join_with_viewviews::join_with (C++23)(C++23) chunk_viewviews::chunk (C++23)(C++23) chunk_by_viewviews::chunk_by (C++23)(C++23)
Range adaptor objects
Range adaptor closure objects
Helper items
copyable-box	simple-view

 

Defined in header <ranges>
template <class T> using iterator_t = decltype(ranges::begin(std::declval<T&>()));	(1)	(since C++20)
template <ranges::range R> using const_iterator_t = std::const_iterator<ranges::iterator_t<R>>;	(2)	(since C++23)
template <ranges::range R> using sentinel_t = decltype(ranges::end(std::declval<R&>()));	(3)	(since C++20)
template <ranges::sized_range R> using range_size_t = decltype(ranges::size(std::declval<R&>()));	(4)	(since C++20)
template <ranges::range R> using range_difference_t = std::iter_difference_t<ranges::iterator_t<R>>;	(5)	(since C++20)
template <ranges::range R> using range_value_t = std::iter_value_t<ranges::iterator_t<R>>;	(6)	(since C++20)
template <ranges::range R> using range_reference_t = std::iter_reference_t<ranges::iterator_t<R>>;	(7)	(since C++20)
template <ranges::range R> using range_const_reference_t =     std::iter_const_reference_t<ranges::iterator_t<R>>;	(8)	(since C++23)
template <ranges::range R> using range_rvalue_reference_t =     std::iter_rvalue_reference_t<ranges::iterator_t<R>>;	(9)	(since C++20)

1) Used to obtain the iterator type of the type T.

2) Used to obtain the constant iterator type of the range type R.

3) Used to obtain the sentinel type of the range type R.

4) Used to obtain the size type of the sized_range type R.

5) Used to obtain the difference type of the iterator type of range type R.

6) Used to obtain the value type of the iterator type of range type R.

7) Used to obtain the reference type of the iterator type of range type R.

8) Used to obtain the const_reference type of the iterator type of range type R.

9) Used to obtain the rvalue_reference type of the iterator type of range type R.

Template parameters

T	-	a type that can be used in std::ranges::begin
R	-	a range type or a sized_range type

Notes

iterator_t can be applied to non-range types, e.g. arrays with unknown bound.

See also

iter_value_titer_reference_titer_const_reference_titer_difference_titer_rvalue_reference_titer_common_reference_t (C++20)(C++20)(C++23)(C++20)(C++20)(C++20)

computes the associated types of an iterator (alias template)