std::ranges::common_view<V>::end

 

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::common_view

Member functions

common_view::common_view (C++20)

common_view::base (C++20)

common_view::begin (C++20)

common_view::end (C++20)

common_view::size (C++20)

Deduction guides

 

constexpr auto end();	(1)	(since C++20)
constexpr auto end() const requires ranges::range<const V>;	(2)	(since C++20)

1) Returns an iterator representing the end of the common_view, that is:

• ranges::begin(base_) + ranges::size(base_), if both ranges::random_access_range<V> and ranges::sized_range<V> are satisfied,
• std::common_iterator<ranges::iterator_t<V>, ranges::sentinel_t<V>>(ranges::end(base_)) otherwise.

Here base_ (the name is for exposition only purposes) is the underlying view.

2) Same as (1), but V is const-qualified.

Parameters

(none)

Return value

An iterator representing the end of the underlying view.

Example

Run this code

#include <iostream>
#include <numeric>
#include <ranges>
 
int main()
{
    constexpr int n{4};
 
    constexpr auto cv1 = std::views::iota(1)
                       | std::views::take(n)
                       | std::views::common
                       ;
    constexpr auto cv2 = std::views::iota(2)
                       | std::views::take(n)
                       ;
    const int product = std::inner_product(cv1.begin(), cv1.end(), 
                                           cv2.begin(),
                                           0);
    std::cout << product << '\n';
}

Output:

40

See also

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