more messages

Author: changkhothuychung

include/beman/optional26/optional.hpp

@@ -287,8 +287,9 @@ concept enable_assign_from_other =
 
 template <class T>
 class optional {
-    static_assert((!std::is_same_v<T, std::remove_cv_t<in_place_t>>) &&
-                  (!std::is_same_v<std::remove_cv_t<T>, nullopt_t>));
+    static_assert(
+        (!std::is_same_v<T, std::remove_cv_t<in_place_t>>)&&(!std::is_same_v<std::remove_cv_t<T>, nullopt_t>),
+        "T must not be in_place_t or nullopt_t");
 
     struct empty {};
     union {