命名空间
变体
操作

std::experimental::ranges::ForwardRange

来自 cppreference.com
< cpp‎ | experimental‎ | ranges
定义在头文件 <experimental/ranges/range>
template< class T >

concept bool ForwardRange =

    InputRange<T> && ForwardIterator<ranges::iterator_t<T>>;
(范围 TS)