std::ranges::range_reference_t,std::ranges::range_const_reference_t,std::ranges::range_rvalue_reference_t,std::ranges::range_common_reference_t

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Ranges library

Range access

begin
cbegin
end
cend

rbegin
crbegin
rend
crend

size
ssize
data
cdata

reserve_hint (C++26)
empty

Range conversions
std::from_range_t std::from_range (C++23)(C++23)
to (C++23)

Dangling iterator handling
dangling
borrowed_iterator_t
borrowed_subrange_t

Range primitives

range_size_trange_difference_trange_value_t
elements_of (C++23)

iterator_tconst_iterator_tsentinel_tconst_sentinel_t

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

range_reference_trange_const_reference_trange_rvalue_reference_trange_common_reference_t

(C++23)

Range concepts

range
borrowed_range
common_range

sized_range
viewable_range
view

input_range
output_range
forward_range

bidirectional_range
random_access_range
contiguous_range

approximately_sized_range (C++26)
constant_range (C++23)

empty_viewviews::empty

single_viewviews::single

basic_istream_viewviews::istream

iota_viewviews::iota

repeat_viewviews::repeat

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

Range adaptors

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
to_input_viewviews::to_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)

Range generators
std::generator (C++23)

Range adaptor closure objects
range_adaptor_closure (C++23)

Range adaptor objects

Helper items

copyable-box
movable-box

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

simple-view
non-propagating-cache

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Defined in header`<ranges>`
template<ranges::range R> using range_reference_t=std::iter_reference_t<ranges::iterator_t<R>>;	(1)	(since C++20)
template<ranges::range R> using range_const_reference_t= std::iter_const_reference_t<ranges::iterator_t<R>>;	(2)	(since C++23)
template<ranges::range R> using range_rvalue_reference_t= std::iter_rvalue_reference_t<ranges::iterator_t<R>>;	(3)	(since C++20)
template<ranges::range R> using range_common_reference_t= std::iter_common_reference_t<ranges::iterator_t<R>>;	(4)	(since C++20)

1) Used to obtain the reference type of the iterator type of range typeR.

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

3) Used to obtain the rvalue reference type of the iterator type of range typeR.

4) Used to obtain the common reference type of the iterator type of range typeR.

[edit]Template parameters

R - arange type or asized_range type

[edit]Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR	Applied to	Behavior as published	Correct behavior
LWG 3860	C++20	`range_common_reference_t` was missing	added

[edit]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)[edit]
ranges::iterator_tranges::const_iterator_tranges::sentinel_tranges::const_sentinel_t (C++20)(C++23)(C++20)(C++23)	obtains iterator and sentinel types of a range (alias template)[edit]
ranges::range_difference_tranges::range_size_tranges::range_value_t (C++20)(C++20)(C++20)	obtains size, difference, and value types of a range (alias template)[edit]

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std::ranges::range_reference_t,std::ranges::range_const_reference_t,std::ranges::range_rvalue_reference_t,std::ranges::range_common_reference_t

[edit]Template parameters

[edit]Defect reports

[edit]See also

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