Our new Core Data book is in early access
objc.io publishes books, videos, and articles on advanced techniques for iOS and macOS development.
Our new Core Data book is in early access launched on July 28, 2015 with 13 votes, #1,649 of 4,208 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 11 years on.
In plain words
objc.io publishes a Core Data book currently in early access, offering practical guidance on Apple's persistence framework for iOS and macOS developers. The book covers Core Data fundamentals through advanced topics including relationships, multithreading, data syncing, and performance optimization. It uses a step-by-step example app approach to teach best practices while explaining how Core Data works internally. The resource is part of objc.io's broader collection of books, videos, and articles on advanced iOS and macOS development techniques.
written from the facts on this page · September 2026
From the sources
Core Data best practices by example, from persistency to multithreading and syncing. This book strives to give you clear guidelines for how to get the most out of Core Data while avoiding the pitfalls of this flexible and powerful framework. We start with a simple example app and extend it step by step as we talk about relationships, advanced data types, concurrency, syncing, and many other topics. Later on, we go well beyond what’s needed for the basic example app. We'll discuss in depth how Core Data works behind the scenes, how to get great performance, the trade-offs between different Core Data setups, and how to debug and profile your Core Data code. All code samples in this book are…from objc.io
Does a similar job
all alternatives →
Our book on functional programming in Swift is ready2014 · objc.io · ▲5objc.io publishes books, videos, and articles on advanced techniques for iOS and macOS development.

The Swift Summary Book2016 · github.com · ▲157Summary of Apple's Swift language written on Playgrounds
- IWI Wrote a Book on Java2024 · ▲586
https://www.manning.com/books/data-oriented-programming-in-j... This book is a distillation of everything I’ve learned about what effective development looks like in Java (so far!). It's about how to organize programs around data "as plain data" and the surprisingly benefits that emerge when we do. Programs that are built around the data they manage tend to be simpler, smaller, and significantly easier understand. Java has changed radically over the last several years. It has picked up all kinds of new language features which support data oriented programming (records,…
iOS Development E-Book Bootcamp2018 · devslopes.com · ▲161Learn to code & build iOS apps with no experience for $0 💻📱
- SPSelf-Published Book – “Data Science in Production”2020 · ▲172
Hi HN, Over the past 6 months I've been working on a technical book focused on helping aspiring data scientists to get hands-on experience with cloud computing environments using the Python ecosystem. The book is targeted at readers already familiar with libraries such as Pandas and scikit-learn that are looking to build out a portfolio of applied projects. To author the book, I used the Leanpub platform to provide drafts of the text as I completed each chapter. To typeset the book, I used the R bookdown package by Yihui Xie to translate my markdown into a PDF format. I also used Google docs…
More life & fun this month
the category →
A free city-building game in your browser. You are the mayor. You know what the city needs. Now get it past the zoning board, the neighbors, the appeals court and the next election.
Life & fun · 3d ago · permit.petercai.com
- IV
Life & fun · 15d ago · tanzaniaeducationproject.org

Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.
Life & fun · 16d ago · bigwords.page

Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.
Life & fun · 10d ago · guitoro.com

Carrier settings from iPhone, Pixel and Galaxy firmware, decoded and compared: APNs, VoLTE, 5G and Wi-Fi Calling per carrier, and what each build changed.
Life & fun · 14d ago · carrierexplode.com

Life & fun · 24d ago · space.bl2.net
Source: Show HN post ↗
Launched alongside, July 2015
the whole month →
Hotjar▲1,312See how visitors are using your site and get visual feedback
Growth · 2015 · contentsquare.com
Spot the Drowning Child▲1,215Can you spot the drowning child in this crowded wave pool? To the untrained eye, drowning looks like swimming. The Instinctive Drowning Response is frequently missed, even by people nearby.
Life & fun · 2015 · spotthedrowningchild.com


Docker implemented in around 100 lines of bash. Contribute to p8952/bocker development by creating an account on GitHub.
Dev tools · 2015 · github.com


Guida completa ai siti scommesse americani 2026: scopri i migliori bookmaker USA, licenze, bonus, sport americani, metodi pagamento e consigli utili.
AI · 2015 · whoishiring.it