Chapter 12Dynamic Parameters
If you have a document-style application, you’ll need to work with document-specific parameters or settings. For example, in a word processor, some settings are specific to one document, and some settings apply to the entire application. We have access to a great implementation for storing application-level parameters: NSUserDefaults. However, there’s no reusable storage system for document-level parameters provided by the APIs. In this chapter, we’ll build that reusable storage system within Core Data.
System-level and user-level preferences are extremely useful and easy to access on OS X. One call to standardDefaults on NSUserDefaults from anywhere in the application instantly gives you access to the defaults ...
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