Hi everybody,
TL:DR - I would like to return only duplicated things from a list, not unique things.
Sorry if this has been answered before, but I wasn’t able to find a good answer.
I have a list, the list contains Customers(Thing):Unique IDs. This list will have some customers multiple times, others just once. I would like to return a second list that returns only the customers which appear in the first list more than once.
I’ve tried lots of different ways to achieve this, but no luck so far. If anybody has any advice, please help me out!
Thanks in advance!