Core Data by Tutorials Updated for Swift 4 and iOS 11

Chris Belanger

Happy Monday – it’s another iOS 11 Launch Party book release!

Today, we’re excited to announce that Core Data by Tutorials, Fourth Edition has been fully updated for Swift 4, iOS 11 and Xcode 9.

Core Data by Tutorials teaches you everything you need to know to take control of your data in iOS apps using Core Data, Apple’s powerful object graph and persistence framework.

This will be a free update for existing Core Data by Tutorials PDF customers — our way to say “thanks” to our readers for their support.

Don’t own Core Data by Tutorials yet? Read on to see how you can get a copy!

What is Core Data by Tutorials?

This book is for intermediate iOS developers who already know the basics of iOS and Swift development but want to learn how to leverage Core Data to persist data in their apps.

Here’s a quick look at what’s inside Core Data by Tutorials:

  • Chapter 1, Your First Core Data App: You’ll click File\New Project and write a Core Data app from scratch! This chapter covers the basics of setting up your data model and then adding and fetching records.
  • Chapter 2, NSManagedObject Subclasses: NSManagedObject is the base data storage class of your Core Data object graphs. This chapter will teach you how you customize your own managed object subclasses to store and validate data.
  • Chapter 3, The Core Data Stack: Under the hood, Core Data is made up of many parts working together. In this chapter, you’ll learn about how these parts fit together, and move away from the starter Xcode template to build your own customizable system.
  • Chapter 4, Intermediate Fetching: Your apps will fetch data all the time, and Core Data offers many options for getting the data to you efficiently. This chapter covers more advanced fetch requests, predicates, sorting and asynchronous fetching.
  • Chapter 5, NSFetchedResultsController: Table views are at the core of many iOS apps, and Apple wants to make Core Data play nicely with them! In this chapter, you’ll learn how NSFetchedResultsController can save you time and code when your table views are backed by data from Core Data.
  • Chapter 6, Versioning and Migration: As you update and enhance your app, its data model will almost certainly need to change. In this chapter, you’ll learn how to create multiple versions of your data model and then migrate your users forward so they can keep their existing data as they upgrade.
  • Chapter 7, Unit Tests: Testing is an important part of the development process, and you shouldn’t leave Core Data out of those tests! In this chapter, you’ll learn how to set up a separate test environment for Core Data and see examples of how to test your models.
  • Chapter 8, Measuring and Boosting Performance: No one ever complained that an app was too fast, so it’s important to be vigilant about tracking performance. In this chapter, you’ll learn how to measure your app’s performance with various Xcode tools and then pick up some tips for dealing with slow spots in your code.
  • Chapter 9, Multiple Managed Object Contexts: In this final chapter, you’ll expand the usual Core Data stack to include multiple managed object contexts. You’ll learn how this can improve perceived performance and help make your app architecture less monolithic and more compartmentalized.

About the Authors

Of course, our book would be nothing without our team of experienced and dedicated authors:

AaronAaron Douglas was that kid taking apart the mechanical and electrical appliances at five years of age to see how they worked. He never grew out of that core interest – to know how things work. He took an early interest in computer programming, figuring out how to get past security to be able to play games on his dad’s computer. He’s still that feisty nerd, but at least now he gets paid to do it. Aaron works for Automattic (WordPress.com, Akismet, Simplenote) as a Mobile Maker primarily on the WordPress for iOS app. Find Aaron on Twitter as @astralbodies.

SaulSaul Mora is trained in the mystical and ancient arts of manual memory management, compiler macros and separate header files. Saul is a developer who honors his programming ancestors by using Optional variables in swift on all UIs created from Nib files. Despite being an Objective C neckbeard, Saul has embraced the Swift programming language. Currently, Saul resides in Shanghai, China working at 流利说 (Liulishuo) helping Chinese learn English while he is learning 普通话 (mandarin).

MatthewMatthew Morey is an engineer, author, hacker, creator and tinkerer. As an active member of the iOS community and Director of Mobile Engineering at MJD Interactive he has led numerous successful mobile projects worldwide. When not developing apps he enjoys traveling, snowboarding, and surfing. He blogs about technology and business at matthewmorey.com.

PietroPietro Rea is a software engineer at Upside Travel in Washington D.C. Pietro’s work has been featured in Apple’s App Stores across several different categories: media, e-commerce, lifestyle and more. From Fortune 500 companies to venture-backed startups, Pietro has a passion for mobile software development done right. You can find Pietro on Twitter as @pietrorea.

Free Core Data Chapters this Week

To help celebrate the launch, we’re going to open up the book and share three free chapters with you this week! This will give you a chance to check out the book — we’re confident you’ll love it!

Now Available in ePub!

And as another exciting announcement, by popular request, Core Data by Tutorials is now available in ePub format. Take it on the go with you on your iPad, iPhone or other digital reader and enjoy all the mobile reading benefits that ePub has to offer!

Where To Go From Here?

Core Data by Tutorials, Fourth Edition is now 100% complete, fully updated for Swift 4, iOS 11 and Xcode 9 — and available today.

  • If you’ve already bought the Core Data by Tutorials PDF, you can download the new book immediately on the store page for the book.
  • If you don’t have Core Data by Tutorials yet, you can grab your own copy in our online store.

And to help sweeten the deal, the digital edition of the book is on sale for $49.99! But don’t wait — this sale price is only available for a limited time.

Speaking of sweet deals, be sure to check out the great prizes we’re giving away this year with the iOS 11 Launch Party, including over $9,000 in giveaways!

To enter, simply retweet this post using the #ios11launchparty hashtag by using the button below:


We hope you enjoy this free update, and stay tuned for more book releases and updates coming soon!

Chris Belanger

Chris Belanger is the Book Team Lead and Lead Editor for raywenderlich.com. If there are words to wrangle or a paragraph to ponder, he‘s on the case.

In the programming world, Chris has over 20 years of experience with multiple database platforms, real-time industrial control systems, and enterprise healthcare information systems.

When he kicks back, you can usually find Chris with guitar in hand, looking for the nearest beach, or exploring the lakes and rivers in his part of the world in a canoe.

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