From 8111074a44a4ee0dddc0bf058453fbb2a149984f Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Wed, 21 Oct 2020 10:22:51 +1000
Subject: [PATCH] types/tagged: add not-equal operator

---
 types/tagged.hpp | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/types/tagged.hpp b/types/tagged.hpp
index 716003da..42d7c2d3 100644
--- a/types/tagged.hpp
+++ b/types/tagged.hpp
@@ -262,4 +262,18 @@ namespace cruft {
             ) || ...
         );
     }
+
+    template <typename ...ComponentsT>
+    bool operator!= (tagged<ComponentsT...> const &lhs, tagged<ComponentsT...> const &rhs)
+    {
+        if (lhs.tag () != rhs.tag ())
+            return false;
+
+        return (
+            (
+                lhs.template is<ComponentsT> () &&
+                (lhs.template get<ComponentsT> () != rhs.template get<ComponentsT> ())
+            ) || ...
+        );
+    }
 }