How to remove elements from a generic list while iterating over it?

Question

I am looking for a better pattern for working with a list of elements which each need processed and then depending on the outcome are removed from

Answer 1

I would reassign the list from a LINQ query that filtered out the elements you didn't want to keep.

list = list.Where(item => ...).ToList();

Unless the list is very large there should be no significant performance problems in doing this.