NSFetchedResultsController and Time-Based Predicates

So, I have a better NSFetchedResultsController blog post in draft form, but after spending a week or so trying to figure out why our NSFetchedResultsController was not getting alerted when the background ManagedObjectContext merged with the foreground MOC…

I found posts on threading, and all other sorts of sophisticated problems, I worried about conflicting insertions, etc.

But it turned out that when we received new data, it was newer than the date defined in our previously created fetchRequest predicate. So:

  1. No alerts.
  2. No Data upon fetching.

Ugh.

Madness.

 
0
Kudos
 
0
Kudos

Now read this

A Possible NSUserDefaults Alternative

It is often the case that we need to persist a few bits of info or at least a single object, like a “user”. Core data is too big for this, NSUserDefaults is sometimes not the best practice use case, and does not provide compiler... Continue →