std::ranges::forward_range
来自 cppreference.com
定义在头文件 <ranges> 中 |
||
template< class T > concept forward_range = |
(自 C++20 起) | |
forward_range
概念是对 range
的细化,其中 ranges::begin 返回 forward_iterator
的模型。
[编辑] 示例
运行此代码
#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() {}