1 files changed, 4 insertions, 0 deletions
diff --git a/common/hashlib.h b/common/hashlib.h
index 48db024f..30fefc65 100644
--- a/common/hashlib.h
+++ b/common/hashlib.h
@@ -339,6 +339,10 @@ template <typename K, typename T, typename OPS> class dict
     }
 
   public:
+    using key_type = K;
+    using mapped_type = T;
+    using value_type = std::pair<K, T>;
+
     class const_iterator : public std::iterator<std::forward_iterator_tag, std::pair<K, T>>
     {
         friend class dict;