std::ranges::forward_range
From cppreference.com
| Defined in header <ranges>
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| template< class T > concept forward_range = |
(since C++20) | |
The forward_range concept is a refinement of range for which ranges::begin returns a model of forward_iterator.
Example
Run this code
#include <forward_list> #include <queue> #include <ranges> #include <span> #include <stack> #include <tuple> 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<char>> && std::ranges::forward_range<std::forward_list<char>> && !std::ranges::forward_range<std::tuple<std::forward_list<char>>> && std::ranges::forward_range<std::span<char>> && !std::ranges::forward_range<std::queue<char>> && ""); int main() {}