std::ranges::zip_view<Views...>::end

 

C++

Compiler support

Freestanding and hosted

Language

Standard library

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_trange_value_trange_reference_t	iterator_tconst_iterator_tsentinel_tconst_sentinel_t (C++23)(C++23)	range_const_reference_trange_rvalue_reference_trange_common_reference_t (C++23)	elements_of (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
Range factories
empty_viewviews::empty single_viewviews::single	iota_viewviews::iota repeat_viewviews::repeat (C++23)(C++23)	basic_istream_viewviews::istream
Range adaptors
views::all_tviews::all ref_view owning_view as_rvalue_viewviews::as_rvalue (C++23)(C++23) filter_viewviews::filter transform_viewviews::transform take_viewviews::take take_while_viewviews::take_while	drop_viewviews::drop drop_while_viewviews::drop_while join_viewviews::join join_with_viewviews::join_with (C++23)(C++23) lazy_split_viewviews::lazy_split split_viewviews::split views::counted common_viewviews::common	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 objects
Range adaptor closure objects
range_adaptor_closure (C++23)
Helper items
copyable-box movable-box (until C++23)(C++23)	simple-view non-propagating-cache

 

std::ranges::zip_view

Member functions

zip_view::zip_view (C++23)

zip_view::begin (C++23)

zip_view::end (C++23)

zip_view::size (C++23)

Deduction guides

Iterator

Member functions

zip_view::iterator::iterator (C++23)

zip_view::iterator::operator* (C++23)

zip_view::iterator::operator[] (C++23)

zip_view::iterator::operator++ zip_view::iterator::operator++(int) zip_view::iterator::operator-- zip_view::iterator::operator--(int) zip_view::iterator::operator+= zip_view::iterator::operator-= (C++23)(C++23)(C++23)(C++23)(C++23)(C++23)

Non-member functions

operator==(zip_view::iterator) operator<(zip_view::iterator) operator>(zip_view::iterator) operator<=(zip_view::iterator) operator>=(zip_view::iterator) operator<=>(zip_view::iterator) (C++23)(C++23)(C++23)(C++23)(C++23)(C++23)

operator+(zip_view::iterator) operator-(zip_view::iterator) (C++23)(C++23)

iter_move(zip_view::iterator) (C++23)

iter_swap(zip_view::iterator) (C++23)

Sentinel

Member functions

zip_view::sentinel::sentinel (C++23)

Non-member functions

operator==(zip_view::iterator,zip_view::sentinel) (C++23)

operator-(zip_view::iterator,zip_view::sentinel) (C++23)

 

constexpr auto end()     requires (!(/*simple-view*/<Views> && ...);	(1)	(since C++23)
constexpr auto end() const     requires (ranges::range<const Views> && ...);	(2)	(since C++23)
template< class... Rs >   concept /*zip-is-common*/ =     (sizeof...(Rs) == 1 && (ranges::common_range<Rs> && ...))     ||     (!(ranges::bidirectional_range<Rs> && ...) && (ranges::common_range<Rs> && ...))     ||     ((ranges::random_access_range<Rs> && ...) && (ranges::sized_range<Rs> && ...));	(3)	(exposition only*)

Returns a sentinel or an iterator that compares equal to the end iterator of the std::zip_view.

Let views_ denote the underlying tuple of views.

1) Equivalent to:

• return /*sentinel*/<false>(/*tuple-transform*/(ranges::end, views_));,

if /*zip-is-common*/<Views...> evaluates to false. Otherwise,

• return begin() + std::iter_difference_t</*iterator*/<false>>(size());,

if (ranges::random_access_range<Views> && ...) evaluates to true. Otherwise,

• return /*iterator*/<false>(/*tuple-transform*/(ranges::end, views_));.

2) Equivalent to:

• return /*sentinel*/<true>(/*tuple-transform*/(ranges::end, views_));,

if /*zip-is-common*/<const Views...> evaluates to false. Otherwise,

• return begin() + std::iter_difference_t</*iterator*/<true>>(size());,

if ranges::random_access_range<const Views> && ... evaluates to true. Otherwise,

• return /*iterator*/<true>(/*tuple-transform*/(ranges::end, views_));.

Parameters

(none)

Return value

An iterator or sentinel representing the end of the zip_view, as described above.

Notes

ranges::range<const ranges::zip_view<Views...>> is modeled if and only if for every type Vi in Views..., const Vi models range.

See also

begin (C++23)	returns an iterator to the beginning (public member function)
ranges::end (C++20)	returns a sentinel indicating the end of a range (customization point object)