diff --git a/src/util/dlist.h b/src/util/dlist.h
index e5c95b8cf..07aefa97e 100644
--- a/src/util/dlist.h
+++ b/src/util/dlist.h
@@ -223,6 +223,16 @@ public:
     }
 };
 
+template <typename T>
+class dll_elements {
+    T const* m_list;
+public:
+    dll_elements(T const* list) : m_list(list) {}
+    dll_iterator<T> begin() const { return dll_iterator<T>::mk_begin(m_list); }
+    dll_iterator<T> end() const { return dll_iterator<T>::mk_end(m_list); }
+};
+
+
 template < typename T
          , typename U = std::enable_if_t<std::is_base_of_v<dll_base<T>, T>>  // should only match if T actually inherits from dll_base<T>
          >
diff --git a/src/util/var_queue.h b/src/util/var_queue.h
index 9807e5ac2..0af4de3b8 100644
--- a/src/util/var_queue.h
+++ b/src/util/var_queue.h
@@ -68,6 +68,8 @@ public:
     void reset() {
         m_queue.reset();
     }
+
+    bool contains(var v) const { return m_queue.contains(v); }
     
     bool empty() const { return m_queue.empty(); }