Mastering Core Data With Swift (Ebook)
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Mastering Core Data With Swift

About the Book

The first time I came into contact with Core Data was more than ten years ago. I was immediately overwhelmed by the terminology, the complex setup, and the many rules I had to stick to.

Does this sound familiar? I wondered if it was worth the hassle? And why did experienced developers swear by Core Data? How was I going to master Core Data and integrate it into an application without running into mysterious crashes?

The Solution Was Surprisingly Simple

Whenever I teach developers Core Data, I emphasize how important it is to focus on the fundamentals first. The vast majority of issues developers run into are caused by a lack of knowledge about the ins and outs of the framework. Core Data isn’t difficult if you understand how the framework works.

A Proven Roadmap to Master Core Data

Over the years, I’ve taught thousands of developers how to use Core Data. This has taught me what the common pitfalls are developers run into. In Mastering Core Data With Swift, I show you the pitfalls you need to avoid.

The video course follows a proven roadmap that starts with the fundamentals of the framework. We cover some theory, but, more importantly, you immediately apply what you learn to build a real application. Practice makes perfect. Right? This very much applies to any programming subject.

Ready for Xcode 9 and Swift 4

In Mastering Core Data With Swift, you learn everything you need to know to integrate Core Data in a new or an existing Swift project. We focus on the key players of the framework and build an application that takes advantage of the core features of the framework.

We use the latest and greatest to build an application. Xcode 8 & 9 have many improvements that make working with Core Data fantastic. And the intuitive syntax of Swift adds the cherry on the cake. It's never been easier to get started with Core Data.

Building a Real Application

We start the course with an exploration of the heart of every Core Data application, the Core Data stack. We then take a closer look at the data model of a Core Data application. You learn about entities, attributes, and relationships. These are the ingredients of every Core Data application.

During the course, we build an application that manages notes. We start from scratch, build a Core Data stack, create a data model, and add several features, such as categories and tags. Every feature teaches you a new concept of the Core Data framework.

… And Beyond the Basics

We don’t skip the more advanced features of the framework. We discuss data model migrations, working with multiple managed object contexts, and using Core Data in a multithreaded environment.

While some of these topics may seem advanced, they are essential for building a robust, scalable Core Data application. This is a common mistake developers new to Core Data make.

What Other Are Saying

A big thank you. This has been the single most effective course I've taken about iOS. I put it into practice right away and our App Store app, and its testing, has benefited greatly. - Jake Young (Chief Information Officer)

About the Author

Bart Jacobs
Bart Jacobs

My name is Bart Jacobs and I run a mobile development company, Code Foundry. I’ve been programming for more than fifteen years, focusing on Cocoa development soon after the introduction of the iPhone in 2007.

Over the years, I’ve taught thousands of people about Swift and Cocoa development. Through my experience teaching, I’ve discovered and learned about the main problems people struggle with.

I created Cocoacasts to offer a roadmap for anyone interested in learning Swift and Cocoa development. Through Cocoacasts, I provide a clear path to learn the tools, the language, and the frameworks you need to master Swift and Cocoa development.

I currently work as a freelance developer and teach people about Swift and Cocoa development. While I primarily focus on developing software for Apple’s platforms, I consider myself a full stack developer with a love and interest for Swift and Ruby development.

You can find me on TwitterFollow me and say hi. You can also follow Cocoacasts on Twitter if you’re interested in what I teach on Cocoacasts.

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Table of Contents

  • Welcome
    • Xcode 9 and Swift 4
    • What You’ll Learn
    • How to Use This Book
  • 1 What Is Core Data
    • Core Data Manages an Object Graph
    • When to Use Core Data
    • Core Data & SQLite
    • Core Data Goes Much Further
    • Drawbacks
  • 2 Building Notes
  • 3 Exploring the Core Data Stack
    • Managed Object Model
    • Managed Object Context
    • Persistent Store Coordinator
    • How Does Core Data Work
  • 4 Creating the Project
  • 5 Setting Up the Core Data Stack
    • Managed Object Context
    • Managed Object Model
    • Persistent Store Coordinator
    • Adding a Data Model
    • Setting Up the Core Data Stack
  • 6 Core Data and Dependency Injection
  • 7 Data Model, Entities, and Attributes
    • Compiling the Data Model
    • Exploring the Data Model Editor
    • What Is an Entity
    • Creating an Entity
    • Creating an Attribute
  • 8 Data Model, Entities, and Relationships
    • Adding More Entities
    • Defining Relationships
    • Creating a To-One Relationship
    • Creating an Inverse Relationship
    • Creating a To-Many Relationship
    • Creating a Many-To-Many Relationship
  • 9 Configuring Relationships
    • Delete Rules
    • Evaluating the Data Model
    • Another Scenario
    • More Configuration
  • 10 Working With Managed Objects
    • What Is a Managed Object
    • Creating a Managed Object
    • Working With a Managed Object
    • Saving the Managed Object Context
  • 11 Subclassing NSManagedObject
    • Code Generation
    • Convenience Methods
    • What to Remember
  • 12 Adding a Note
    • Target Configuration
    • View Controllers
    • Adding Notes
  • 13 Don’t Forget to Save
    • Revisiting the Core Data Manager
    • Saving Changes
    • Build and Run
  • 14 Fetch Those Notes
    • Before We Start
    • Fetching Notes
    • Displaying Notes
  • 15 Fix That Mistake
    • Before We Start
    • Passing a Note
    • Populating the Note View Controller
    • Updating a Note
    • Updating the Table View
    • Listening for Notifications
  • 16 To the Trash Can
    • Deleting a Note
    • Build and Run
  • 17 Introducing the Fetched Results Controller
    • Creating a Fetched Results Controller
    • Performing a Fetch Request
    • Updating the Table View
    • A Few More Changes
  • 18 Exploring the NSFetchedResultsControllerDelegate Protocol
    • Implementing the Protocol
    • Inserts
    • Deletes
    • Updates
    • Moves
  • 19 Adding Categories to the Mix
    • Before We Start
    • Assigning a Category to a Note
    • Assigning a Note to a Category
    • Updating the Note View Controller
  • 20 Adding a Dash of Color
    • Before We Start
    • Updating the Data Model
    • Extending UIColor
    • Extending Category
    • Updating the Category View Controller
    • Updating the Notes View Controller
    • A Crash
  • 21 Data Model Migrations
    • Finding the Root Cause
    • Versioning the Data Model
    • Before You Go
  • 22 Versioning the Data Model
    • Restoring the Data Model
    • Adding a Data Model Version
    • Performing Migrations
    • Keep It Lightweight
    • Plan, Plan, Plan
  • 23 Assigning Tags to a Note
    • Before We Start
    • Preparing the Note Class
    • Updating the Notes View Controller
    • Updating the Note View Controller
    • Updating the Tags View Controller
    • Tweaking the Note View Controller
  • 24 Working In a Multithreaded Environment
    • Concurrency Basics
    • Managing Concurrency
    • Updating the Core Data Stack
    • Practice
  • 25 Updating the Core Data Manager for Concurrency
    • Creating a Private Managed Object Context
    • Updating the Main Managed Object Context
    • Updating the Save Method
    • Another Option
    • When to Save
  • 26 Using a Better Core Data Stack
    • Updating the Notes View Controller
  • 27 Replacing the Core Data Manager Class
    • Persistent Container
    • Replacing the Core Data Manager
    • Adding the Persistent Store
    • Conclusion
  • 28 Understanding Faulting
    • Exploring Faults
    • What Is a Fault
    • Firing a Fault
    • Faulting and Relationships
    • Unable to Fulfill Fault
  • 29 Where to Go From Here
    • Core Data Isn’t Scary
    • Start Using Core Data
    • Testing
    • Libraries
    • Data Model
    • Continue Learning

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