November 2013
Intermediate to advanced
576 pages
19h 3m
English
book
iOS Components and Frameworks: Understanding the Advanced Features of the iOS SDK
by Kyle Richter, Joe Keeley
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Inserting New Managed Objects
To create a new instance of a managed object for data that does not yet exist in your model, a reference to the managed object context is needed. The sample app uses a constant to refer to the ICFAppDelegate instance, which has a property defined for the managed object context:
NSManagedObjectContext *moc = [kAppDelegate managedObjectContext];
To insert data, Core Data needs to know what entity the new data is for. Core Data has a class called NSEntityDescription that provides information about entities. Create a new instance using NSEntityDescription’s class method:
NSManagedObject *newMovie1 = [NSEntityDescription insertNewObjectForEntityForName:@"Movie" ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.