# HG changeset patch
# User drewp@bigasterisk.com
# Date 1555493090 0
# Node ID 2748dac8195b2f485fc675a17b31542c5dbeee68
# Parent  ad6b5804deb11f01bb2b7fc771286513ae9ab715
new Patch.simplify
Ignore-this: b90097ef6566dccc0040eefbf5c6cca0

diff -r ad6b5804deb1 -r 2748dac8195b rdfdb/patch.py
--- a/rdfdb/patch.py	Wed Apr 17 09:23:34 2019 +0000
+++ b/rdfdb/patch.py	Wed Apr 17 09:24:50 2019 +0000
@@ -128,6 +128,14 @@
         d.update(extraAttrs)
         return json.dumps(d)
 
+    def simplify(self):
+        adds = set(self.addQuads)
+        dels = set(self.delQuads)
+        both = adds.intersection(dels)
+        if not both:
+            return self
+        return Patch(addQuads=adds - both, delQuads=dels - both)
+        
     def concat(self, more):
         """
         new Patch with the result of applying this patch and the