std::ranges::iterator_t, std::ranges::sentinel_t, std::ranges::range_difference_t, std::ranges::range_value_t, std::ranges::range_reference_t, std::ranges::range_rvalue_reference_t

 

C++

Language

Standard Library Headers

Freestanding and hosted implementations

Named requirements

Language support library

Concepts library (C++20)

Diagnostics library

Utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

Filesystem library (C++17)

Technical Specifications

 

Ranges library

Range access
begincbegin endcend	rbegincrbegin rendcrend	size empty datacdata
Range primitives
iterator_tsentinel_t	range_difference_trange_value_t	range_reference_trange_rvalue_reference_t
Dangling iterator handling
dangling	borrowed_iterator_t	borrowed_subrange_t
Range concepts
range borrowed_range sized_range	common_range view viewable_range	input_range output_range forward_range	bidirectional_range random_access_range contiguous_range
Views
view_interface	subrange
Semiregular wrapper
Factories
empty_viewviews::empty	single_viewviews::single	iota_viewviews::iota	views::counted
Adaptors
all_viewviews::all join_viewviews::join take_viewviews::take basic_istream_viewistream_view	ref_view                                split_viewviews::split take_while_viewviews::take_while elements_viewviews::elements	common_viewviews::common transform_viewviews::transform drop_viewviews::drop keys_viewviews::keys	reverse_viewviews::reverse filter_viewviews::filter drop_while_viewviews::drop_while values_viewviews::values

 

Defined in header <ranges>
template <ranges::range T> using iterator_t = decltype(ranges::begin(declval<T&>()));	(1)	(since C++20)
template <ranges::range T> using sentinel_t = decltype(ranges::end(declval<T&>()));	(2)	(since C++20)
template <ranges::range T> using range_difference_t = std::iter_difference_t<ranges::iterator_t<T>>;	(3)	(since C++20)
template <ranges::range T> using range_value_t = std::iter_value_t<ranges::iterator_t<T>>;	(4)	(since C++20)
template <ranges::range T> using range_reference_t = std::iter_reference_t<ranges::iterator_t<T>>;	(5)	(since C++20)
template <ranges::range T> using range_rvalue_reference_t =     std::iter_rvalue_reference_t<ranges::iterator_t<T>>;	(6)	(since C++20)

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

2) Used to obtain the sentinel type of the type T.

3) Used to obtain the difference type of the iterator type of the type T.

4) Used to obtain the value type of the iterator type of the type T.

5) Used to obtain the reference type of the iterator type of the type T.

6) Used to obtain the rvalue_reference type of the iterator type of the type T.

Template parameters

T

-

a range type

See also

iter_value_titer_reference_titer_difference_titer_rvalue_reference_titer_common_reference_t

computes the associate types of an iterator (alias template)