Best iOS hacks from Twitter: March & April Edition I love spring. Everything is blooming in Kyiv and city is just magically beautiful. Probably good Kyiv weather somehow affected global iOS …

In my conversations with developers, I’ve heard a pretty common theme from them that “Core Data is hard” or “Core Data is buggy” or “I could never get it to work right and gave up on it”.

Practical Introduction to Custom UICollectionView Layouts containing real life examples and solutions.

Unit Testing and other tools to avoid them.

Introduction Adding support for Touch ID and Face ID to your app is not always completely straightforward, especially given that the documentation from Apple on

One of the first tasks I got in my new team was to convert entire code base from in-house JSON encoding/decoding solution (in fact two of them) to Swift native…

In most code bases, we need a way to uniquely identify certain values and objects. This week, let’s take a look at how we can create type-safe identifiers that enable us to write more robust model handling code.

At last year’s annual Apple developer conference WWDC, the majority of the iOS developer community was excited to play around with ARKit…

Embrace static dispatch

Sample Code of the App Architecture Book. Contribute to objcio/app-architecture development by creating an account on GitHub.

Background timers are a very usefool tool in one’s developer toolbox.

Inside this tutorial I'll show you how to (easily) deploy and run a Keras deep learning model on an iPhone and iOS app using Python and CoreML.

Everyone who knows me, also knows that I’m a huge whisky fan. In this post, I will blend two of my favourite things – whisky and programming, into an app that will detect the type of wh…

Creating reusable components to architect UI, concurrency, data, and other modules in Swift.

If your objects can have multiple states, then you should consider implementing a state pattern. In this article we'll cover some theory on state pattern, and then we'll go over an example on how to implement it. Hopefully, by the end of the article, you'll…

While launch arguments are probably most commonly used as input to command line tools - this week, let's take a look at how we can also use the power of launch arguments when working on, debugging, and testing an iOS app.

Generating cryptographically secure random numbers is a bit difficult. Let's dive into how to do it in Swift in this random blog post.