Update a specific property list element

[bchin]

Hi,

I have a relationship property that is a list. Let's call the property r.list. The list is populated with several values. Now I want to modify the existing list to either delete or modify a specific element on the list.

The question is how do I perform the update in cypher? It doesn't appear that array indexing works (i.e. SET r.list[ index ] = "foo")

It looks like I could use reduce() but is that the only method available? Any insight would be greatly appreciated.

Bill

[andrew_bowman]

Cypher doesn't have much for list manipulation. Instead, install APOC Procedures, and take a look at the collection functions you can use here with CALL apoc.help('coll.')

[bchin]

Hi Andrew,

Thanks for pointing me to the apoc.coll functions. There is apoc.coll.set() and apoc.coll.remove() that use index as a parameter. That does the trick.

Bill