title: Comparing array values in with cypher / neo4j
body: <p>I have a graph of members and the items that they've looked at.</p>
  
  <p>This data is going to be used to recommend items based on items that similar members have looked at. I'd like to sort the items based on how similar the colors of the items are. The colors are stored on the items in an array (["red", "blue", "green"]). Is there any way in cypher to compare arrays to see how many elements they have in common?</p>