June 2016
Intermediate to advanced
214 pages
5h 40m
English
Content preview from Core Data in SwiftBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Asynchronous Saving
One of the biggest issues with threading and Core Data has to do with thread blocking. No matter how cleverly you write the import and export operations, sooner or later you need to block the main queue to let the main NSManagedObjectContext talk to the NSPersistentStoreCoordinator and save changes out to disk.
Fortunately, this is a solvable problem and requires a small change to the Core Data stack. If you start your Core data stack with a private queue, NSManagedObjectContext, and associate it with the NSPersistentStoreCoordinator, you can have the main NSManagedObjectContext as a child of the private NSManagedObjectContext. Furthermore, when the main NSManagedObjectContext is saved, it won’t produce a disk hit and will ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.