1 files changed, 1 insertions, 7 deletions
diff --git a/common/alspan.h b/common/alspan.h
index 519f22e4..1d6cdfe5 100644
--- a/common/alspan.h
+++ b/common/alspan.h
@@ -8,6 +8,7 @@
 #include <type_traits>
 
 #include "almalloc.h"
+#include "altraits.h"
 
 namespace al {
 
@@ -37,13 +38,6 @@ constexpr const T* data(std::initializer_list<T> list) noexcept
 { return list.begin(); }
 
 
-template<typename T>
-struct type_identity { using type = T; };
-
-template<typename T>
-using type_identity_t = typename type_identity<T>::type;
-
-
 constexpr size_t dynamic_extent{static_cast<size_t>(-1)};
 
 template<typename T, size_t E=dynamic_extent>