std::ranges::bidirectional_range_C++中文网

C++ 参考手册

std::ranges::bidirectional_range

template<class T>

  concept bidirectional_range =

    ranges::forward_range<T> && std::bidirectional_iterator<ranges::iterator_t<T>>;

bidirectional_range 概念是 range 的细化,对于实现的类型, ranges::begin 返回 bidirectional_iterator 的实现。