Hello all,
Dynamo beginner here and am stuck at a problem. I am trying to sort a nested list based on the value at index. I have attached an example of the same in the screenshot below. So, if the value at index 0 is the same, it should be sorted to one list and rest to the other. In this case I would want two lists one with all the values corresponding to T1_11 and the other with all the values of T1_12. Does anyone have a solution for this? Thank you in advance.
You could use a List.FilterByBoolMask. Something like this (Note list levels on nodes)
Or List.GroupByKey
Thank you for your help and prompt response. 
Hi @Mike.Buttery,
Your solution worked and I was able to sort them into two different sub lists. At the moment, I have used the node GetItematIndex to separate the two into individual lists. It was easy because I just wanted two sub lists. In some situations, I will have to separate them into 10 individual lists or even 15. Is there a more “automated” way to do this instead of using the GetItematIndex node 10 or 15 times?
