27 struct View : std::ranges::view_base {  struct
29   explicit View() noexcept(IsNoexcept) = default;  argument
30   constexpr explicit View(int start) : start_(start) {}  in View()  argument
31   View(View&&) noexcept(IsNoexcept) = default;
32   View& operator=(View&&) noexcept(IsNoexcept) = default;
36 static_assert(std::ranges::view<View<true>>);  argument
37 static_assert(std::ranges::view<View<false>>);
86 template <class View, class T>
87 concept CanBePiped = requires (View&& view, T&& t) {
88   { std::forward<View>(view) | std::forward<T>(t) };
93     ASSERT_SAME_TYPE(decltype(std::views::all(View<true>())), View<true>);  in test()
94     static_assert(noexcept(std::views::all(View<true>())));  in test()
95     static_assert(!noexcept(std::views::all(View<false>())));  in test()
97     auto viewCopy = std::views::all(View<true>(2));  in test()
98     ASSERT_SAME_TYPE(decltype(viewCopy), View<true>);  in test()