1 files changed, 4 insertions, 0 deletions
diff --git a/src/value.h b/src/value.h
index bd681b07..db45e593 100644
--- a/src/value.h
+++ b/src/value.h
@@ -870,6 +870,10 @@ public:
       return 1;
   }
 
+  bool empty() const {
+    return size() == 0;
+  }
+
   /**
    * Informational methods.
    */