std::ranges::crend

Since C++20

Header: <ranges>

Returns a sentinelfor the constant iterator(since C++23) indicating the end of a const-qualified(until C++23) range that is treated as a reversed sequence.

# Declarations

inline namespace /* unspecified */ {
inline constexpr /* unspecified */ crend = /* unspecified */;
}

(since C++20) (customization point object)

Call signature

template< class T >
requires /* see below */
constexpr /* see below */ auto crend( T&& t );

(since C++20)

# Example

#include <algorithm>
#include <iostream>
#include <iterator>
#include <vector>
 
int main()
{
    int a[]{4, 6, -3, 9, 10};
    std::cout << "Array backwards: ";
    namespace ranges = std::ranges;
    ranges::copy(ranges::rbegin(a), ranges::rend(a),
                 std::ostream_iterator<int>(std::cout, " "));
    std::cout << '\n';
 
    std::cout << "Vector backwards: ";
    std::vector v{4, 6, -3, 9, 10};
    ranges::copy(ranges::rbegin(v), ranges::rend(v),
                 std::ostream_iterator<int>(std::cout, " "));
    std::cout << '\n';
}

# See also