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std::span::rend(3) C++ Standard Libary std::span::rend(3) NAME std::span::rend - std::span::rend Synopsis constexpr reverse_iterator rend() const noexcept; Returns a reverse iterator to the element following the last element of the reversed span. It corresponds to the element preceding the first element of the non-reversed span. This element acts as a placeholder, attempting to access it results in undefined behavior. range-rbegin-rend.svg Parameters (none) Return value Reverse iterator to the element following the last element. Complexity Constant. Example // Run this code #include <algorithm> #include <iostream> #include <span> #include <string_view> void ascending(const std::span<const std::string_view> data, const std::string_view term) { std::for_each(data.begin(), data.end(), [](const std::string_view x) { std::cout << x << " "; }); std::cout << term; } void descending(const std::span<const std::string_view> data, const std::string_view term) { std::for_each(data.rbegin(), data.rend(), [](const std::string_view x) { std::cout << x << " "; }); std::cout << term; } int main() { constexpr std::string_view bars[]{ "","","","","","","","" }; ascending(bars, " "); descending(bars, "\n"); } Output: See also rbegin returns a reverse iterator to the beginning (C++20) (public member function) rend returns a reverse end iterator for a container or array crend (function template) (C++14) http://cppreference.com 2022.07.31 std::span::rend(3)
NAME | Synopsis | Parameters | Return value | Complexity | Example | Output: | See also
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