List.FirstIndexOf and List.IndexOf


I have a question about two nodes in Dynamo.

I find that I get confuse with those two nodes.

How could I recogonize between them?

Thank you! :slightly_smiling_face:

The reason the results appear the same and possibly wrong is the difference in list levels your running it on. Change list levels and see the changes in indices.

Thank you SeanP :slightly_smiling_face:

In fact, there are still two different nodes?