std::ranges::common_view<V>::end
From cppreference.com
constexpr auto end() requires (!/*simple-view*/<V>);
|
(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:
2) Same as (1), but
V is const-qualified.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 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
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 4012 | C++20 | non-const overload missed simple-view check | added |
See also
| 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) |