Merge pull request #2083 from matrix-org/erikj/copy_replace_speed

Speed up copy_and_replace
matrix-org · Mar 31, 2017 · 639d9ae · 639d9ae
2 parents 0834d1a + 27b1b4a
commit 639d9ae
Showing 1 changed file with 1 addition and 3 deletions.
diff --git a/synapse/types.py b/synapse/types.py
@@ -216,9 +216,7 @@ def copy_and_advance(self, key, new_value):
             return self
 
     def copy_and_replace(self, key, new_value):
-        d = self._asdict()
-        d[key] = new_value
-        return StreamToken(**d)
+        return self._replace(**{key: new_value})
 
 
 StreamToken.START = StreamToken(