We use API availability checks all the time, but have you wondered how the Swift compiler handles this? In this article, we'll take a deep dive on how the #availability condition works, how the Swift compiler is able to know if a specific symbol is available…

In this part of the series of articles we will explore the theory behind combine, where does it come from and its fundamentals.

Lazy stacks secrets, hidden in plain sigh.

You can find examples of algebraic structures, like Monoids, in everyday situations!

You can find examples of algebraic structures, like Monoids, in everyday situations!

Snapshot tests are an easy way to ensure that the UI doesn’t change unexpectedly when you modify your code.

NSUserDefaults is a go-to database for saving users' preferences. Learn how to populate it with your default values.

UserDefaults are often used to alter flows in the app and store state. Using launch arguments we can adjust these values for development.

By Yasuhiro Inami (@inamiy), translated in English.
日本語ver: https://zenn.dev/inamiy/books/795a2d9e6954abb46878

This book is a compilation o

Create TableView with expandable cells with a nice and smooth animation step-by-step

Reloading NSDiffableDataSourceSnapshot on table and collection view is not as straightforward as you think. Find out more in this article.

You may have noticed that when Xcode generates your classes based on your Core Data model file, most of your managed object’s properties are optional. Even if you’ve made them required in the model…

Usage notes and things to watch out for when formatting content with NSFormatters.

Try catch explained. Learn how to catch specific error types with error handling in Swift. Code examples show all possible statements.

How networking code can be tested without needing to introduce complex abstractions within our production code, by using system-provided APIs for overriding and mocking various kinds of requests.

I’m excited to announce Swift Algorithms, a new open-source package of sequence and collection algorithms, along with their related types.

Some details about KeyboardKit’s new support for Swift Package Manager, sidebars and lists with UICollectionView.

Learn how to use MetricKit to understand the performance of your app.