Github user andralungu commented on a diff in the pull request:
https://github.com/apache/flink/pull/807#discussion_r31930244
--- Diff: docs/libs/gelly_guide.md ---
@@ -236,6 +236,8 @@ Graph<Long, Double, Double> networkWithWeights =
network.joinWithEdgesOnSource(v
* <strong>Union</strong>: Gelly's `union()` method performs a union on the
vertex and edges sets of the input graphs. Duplicate vertices are removed from
the resulting `Graph`, while if duplicate edges exists, these will be
maintained.
+* <strong>Difference</strong>: Gelly's `difference()` method performs a
difference on the vertex and edges sets of the input graphs. Common vertices
are removed from the resulting `Graph`, along with the edges which which have
these vertices as source/target.
--- End diff --
you have written which twice, "along with the edges which which" :)
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