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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Adding the NSManagedObjectContext
Next to NSManagedObject, NSManagedObjectContext is the object in the Core Data stack that we’ll most often access. The NSManagedObjectContext is the object we access when we want to save to disk, when we want to read data into memory, and when we want to create new objects. The NSManagedObjectContext is at the top of the Core Data stack in that it’s accessed directly by our code frequently. It’s much less common for us to need to go deeper into the stack.
NSManagedObjectContext can’t be accessed from multiple threads. Each thread that needs access to data should have its own NSManagedObjectContext. This is generally not an issue, since it’s very easy to create multiple contexts as needed for data that has to ...
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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.