Public Member Functions | |
| template<typename... Rngs> | |
| constexpr auto | operator() (Rngs &&... rngs) const -> cartesian_product_view< all_t< Rngs >... > requires(sizeof...(Rngs) !=0) &&concepts |
| constexpr empty_view< std::tuple<> > | operator() () const noexcept |