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

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: Here base_ (the name is for exposition purposes only) 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

#include <iostream>
#include <numeric>
#include <ranges>
 
int main()
{
    constexpr int n{4};
 
    constexpr auto v1 = std::views::iota(1)
                      | std::views::take(n)
                      | std::views::common
                      ;
    constexpr auto v2 = std::views::iota(2)
                      | std::views::take(n)
                      ;
    const int product = std::inner_product(v1.begin(), v1.end(),
                                           v2.begin(),
                                           0);
    std::cout << product << '\n';
}

Output:

40

See also

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

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