How to switch UITableView's NSFetchedResultsController (or its predicate) programmatically?

Question

I have a UITableView that displays a subset of a large number of entities named \"Documents\". The subset is defined by another entity \"Selection\". Selections are named, o

Answer 1

An important note: if you "overwrite" a fetchController object make sure you clear its .delegate first - otherwise you'll get crashes when deleting rows, etc as the old fetchController and its delegate get events.