std::ranges::forward_range - cppreference.com (original) (raw)

The forward_range concept is a refinement of range for which ranges::begin returns a model of forward_iterator.

[edit] Example

#include #include #include #include #include #include   const char* str{"not a forward range"}; const char str2[] = "a forward range"; static_assert( std::ranges::forward_range<decltype("a forward range")> && !std::ranges::forward_range<decltype(str)> && std::ranges::forward_range<decltype(str2)> && !std::ranges::forward_range<std::stack> && std::ranges::forward_range<std::forward_list> && !std::ranges::forward_range<std::tuple<std::forward_list>> && std::ranges::forward_range<std::span> && !std::ranges::forward_range<std::queue> && "");   int main() {}