cow_darray, darray: Add type_trait query is_darray_type<T>::value and test_cow_darray_perf01 with default and use_memmove etc.

1 files changed, 3 insertions, 0 deletions

diff --git a/include/jau/cow_darray.hpp b/include/jau/cow_darray.hpp
index 68ff414..9fd67cd 100644
--- a/include/jau/cow_darray.hpp
+++ b/include/jau/cow_darray.hpp
@@ -153,6 +153,9 @@ namespace jau {
                            use_memmove, use_realloc>            storage_t;
             typedef std::shared_ptr<storage_t>                  storage_ref_t;
 
+            /** Used to determine whether this type is a darray or has a darray, see ::is_darray_type<T> */
+            typedef bool                                        darray_tag;
+
             typedef cow_darray<value_type, allocator_type,
                                size_type,
                                use_memmove, use_realloc>        cow_container_t;