fix concepts

paulgessinger · Dec 4, 2023 · c9df58e · c9df58e
1 parent 3e024c1
commit c9df58e
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Showing 2 changed files with 6 additions and 2 deletions.
diff --git a/Core/include/Acts/EventData/MultiTrajectoryBackendConcept.hpp b/Core/include/Acts/EventData/MultiTrajectoryBackendConcept.hpp
@@ -64,7 +64,9 @@ concept CommonMultiTrajectoryBackend = requires(const T& cv, HashedString key,
 
   { cv.hasColumn_impl(key) } -> std::same_as<bool>;
 
-  { cv.dynamicKeys_impl() } -> std::same_as<std::vector<Acts::HashedString>>;
+  {
+    cv.dynamicKeys_impl()
+    } -> std::same_as<const std::vector<Acts::HashedString>&>;
 };
 
 template <typename T>

diff --git a/Core/include/Acts/EventData/TrackContainerBackendConcept.hpp b/Core/include/Acts/EventData/TrackContainerBackendConcept.hpp
@@ -45,7 +45,9 @@ concept ConstTrackContainerBackend = requires(const T& cv, HashedString key,
 
   { cv.referenceSurface_impl(itrack) } -> std::same_as<const Surface*>;
 
-  { cv.dynamicKeys_impl() } -> std::same_as<std::vector<Acts::HashedString>>;
+  {
+    cv.dynamicKeys_impl()
+    } -> std::same_as<const std::vector<Acts::HashedString>&>;
 };
 
 template <typename T>