Wait for all Operations in queue to finish before performing task

Question

I have an Operation subclass and Operation queue with maxConcurrentOperationCount = 1.

This performs my operations in a sequential order that i add them which is goo

Answer 1

Set the maximum number of concurrent operations to 1

operationQueue.maxConcurrentOperationCount = 1

then each operation will be executed in order (as if each was dependent on the previous one) and your completion operation will execute at the end.