The release of Swift 5.1 brought some useful polish to the language with minimal source breaking changes. Some of the bigger improvements like property wrappers and ordered collection diffing take some time to get your head around. Luckily there are also…

SwiftNIO is Apple non-blocking networking library. It can be used to write either client libraries or server frameworks and works on macOS, iOS and Linux.

Let's study different ways of error handling in Swift: Optional, Result, Throw-Try-Catch, Assert, Precondition and FatalError. We'll categorize Swift errors by their severity level, compare assertion vs precondition and explain when to use each mechanism…

Framing your App Store screenshots greatly improves your store listing. But doing it manually takes hours away from perfecting your app. Instead, here’s how you automate the process of adding…

Written by: Steven Chung, Senior iOS Engineer | Revenue Team

Over time, any code base grows along with the project evolves and matures. It creates two main constraints for developers: how to have a code well organized while keeping a build time as low as possible. Let’s see how a modular architecture can fix that.

A common annoyance using iOS share sheets that just opening them will lock up the UI before showing options. UIActivityItemProvider is the solution.

Learn to implement basic cryptography with CryptoKit in Swift.

Let’s take a look at a few different techniques that can let us achieve a nice balance between code reuse and configurability, by building lightweight abstractions that enable us to encapsulate our configuration code.

Diagnostics play a very important role in a programming language experience. It’s vital for developer productivity that the compiler can produce proper guidance in any situation, especially incomplete or invalid code.

How LookUp was designed to provide a native macOS Experience, as a Catalyst app.

Value types and reference types are the core concepts in Swift. Let's study what are value and reference semantics; how Swift structs and classes are stored in memory; compare Swift structs and classes performance and suggest when to use what.

Working on a large iOS codebase often involves a lot of waiting. But with Xcode 11, our wait is finally over — and it’s all thanks to SwiftUI.

The last part in a series on understanding data in SwiftUI. See all tools SwiftUI provided to declare different types of data and dependency. Learn when and how to use @State, @Binding, ObservableObject, @ObservedObject, @EnvironmentObject, and @Environment.

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