std::ranges::elements_view<V,F>::iterator<Const>::base

 

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

 

std::ranges::elements_view

Member functions

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)

Nested classes

Iterator

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)

Sentinel

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)

 

constexpr const ranges::iterator_t<Base>& base() const & noexcept;	(1)	(since C++20)
constexpr ranges::iterator_t<Base> base() &&;	(2)	(since C++20)

Returns the underlying iterator.

1) Returns a reference to the underlying iterator.

2) Move constructs the result from the underlying iterator.

Parameters

(none)

Return value

1) A reference to the underlying iterator.

1) An iterator move constructed from the underlying iterator.

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 3533	C++20	the const& overload of base returns a copy of the underlying iterator	returns a reference
LWG 3593	C++20	the const& overload of base might not be noexcept	made noexcept