diff options
| -rw-r--r-- | common/alspan.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/common/alspan.h b/common/alspan.h index 42e3523e..cb34d410 100644 --- a/common/alspan.h +++ b/common/alspan.h @@ -72,15 +72,16 @@ namespace detail_ { struct has_size_and_data<T, void_t<decltype(al::size(std::declval<T>())), decltype(al::data(std::declval<T>()))>> : std::true_type { }; + + template<typename T> + using remove_pointer_t = typename std::remove_pointer<T>::type; } // namespace detail_ #define REQUIRES(...) bool rt_=true, typename std::enable_if<rt_ && (__VA_ARGS__),bool>::type = true -#define USABLE_CONTAINER_DATA(...) \ - std::is_convertible<typename std::remove_pointer<decltype(al::data(std::declval<__VA_ARGS__>()))>::type(*)[],element_type(*)[]>::value #define IS_VALID_CONTAINER(C) \ !detail_::is_span<C>::value && !detail_::is_std_array<C>::value && \ !std::is_array<C>::value && detail_::has_size_and_data<C>::value && \ - USABLE_CONTAINER_DATA(C&) + std::is_convertible<detail_::remove_pointer_t<decltype(al::data(std::declval<C&>()))>(*)[],element_type(*)[]>::value template<typename T, size_t E> class span { @@ -289,7 +290,6 @@ constexpr inline auto span<T,E>::subspan(size_t offset, size_t count) const -> s } #undef IS_VALID_CONTAINER -#undef USABLE_CONTAINER_DATA #undef REQUIRES } // namespace al |