April 2015
Intermediate to advanced
496 pages
12h 35m
English
book
More iPhone Development with Swift: Exploring the iOS SDK
by David Mark, Jayant Varma, Jeff LaMarche, Alex Horovitz, Kevin Kim
Content preview from More iPhone Development with Swift: Exploring the iOS SDK
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Chapter 2
Core Data: What, Why, and How
Core Data is a framework and set of tools that allow you to save (or persist) your application’s data to an iOS device’s file system automatically. Core Data is an implementation of something called object-relational mapping (ORM). This is just a fancy way of saying that Core Data allows you to interact with your Swift objects without having to worry about how the data from those objects is stored and retrieved from persistent data stores such as relational databases (such as SQLite) or flat files.
Core Data can seem like magic when you first start using it. Core Data objects are, for the most part, handled just like plain old objects, and they seem to know how to retrieve and save themselves automagically. ...
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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.