kfr

commit f0839dcb45b7a555dedca27524af005af306f0bf
parent 242e984487d5d3ec5bbe55a50211ad27a4a6635a
Author: d.levin256@gmail.com <d.levin256@gmail.com>
Date:   Mon,  5 Feb 2024 08:36:27 +0000

CMT_HAS_DATA_SIZE

Diffstat:
M
include/kfr/cometa.hpp
 | 
4
++++

1 file changed, 4 insertions(+), 0 deletions(-)
diff --git a/include/kfr/cometa.hpp b/include/kfr/cometa.hpp
@@ -1452,6 +1452,10 @@ constexpr inline bool has_begin_end = details::has_begin_end_impl<std::decay_t<T
 template <typename T>
 constexpr inline bool has_data_size = details::has_data_size_impl<std::decay_t<T>>::value;
 
+#define CMT_HAS_DATA_SIZE(CONTAINER)                                                                         \
+    std::void_t<decltype(std::size(std::declval<CONTAINER>())),                                              \
+                decltype(std::data(std::declval<CONTAINER>()))>* = nullptr
+
 template <typename T>
 using value_type_of = typename std::decay_t<T>::value_type;