#4 Core Data - Objc.io

In this issue we are taking an in-depth look into Apple’s model layer framework, Core Data.

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    Editorial - Core Data - objc.io issue #4

    In this issue we are taking an in-depth look into Apple’s model layer framework, Core Data.

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    Core Data Overview

    Core Data is probably one of the most misunderstood Frameworks on OS X and iOS. To help with that, we'll quickly go through Core Data to give you an overview of what it is all about, as understanding Core Data concepts is essential to using Core Data the right way.

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    A Complete Core Data Application

    In this article, we will build a small but complete Core Data backed application. The application allows you to create nested lists; each list item can have a sub-list, allowing you to create very deep hierarchies of items. Instead of using the Xcode template for Core Data, we will build our stack by hand, in order to fully understand what's going on.

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    On Using SQLite and FMDB Instead of Core Data

    I can't in good conscience tell you not to use Core Data. It's good and getting better, and it's understood by many other Cocoa developers, which is important when you add people to your team or when someone else takes over your app.

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    Data Models and Model Objects

    In this article we are going to have a closer look at Core Data models and managed object classes. It's not meant to be an introduction to the topic, but rather a collection of some lesser-known or often-forgotten aspects which can come in handy when working with Core Data.

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    Importing Large Data Sets

    Importing large data sets into a Core Data application is a common problem. There are several approaches you can take dependent on the nature of the data: Downloading the data from a web server (for example as JSON) and inserting it into Core Data. Downloading a pre-populated Core Data SQLite file from a web server.

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    Fetch Requests - Core Data - objc.io issue #4

    A periodical about best practices and advanced techniques in Objective-C

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    Custom Core Data Migrations

    Custom Core Data migrations are somewhat of an obscure topic. Apple provides little documentation on the subject, and it can be a frightening experience when first ventured into. Given the nature of client side programs, there's no way to test all the possible permutations of datasets that your users will have.

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