Understanding async/await in Swift

Published on June 16, 2021

This article is part of my Modern Concurrency in Swift article series.

This article was originally written creating examples using Xcode 13 beta 1. The article, code samples, and provided sample project have been updated for Xcode 13 beta 3.

Table of Contents

1. Modern Concurrency in Swift: Introduction
2. Understanding async/await in Swift
3. Converting closure-based code into async/await in Swift
4. Structured Concurrency in Swift: Using async let
5. Structured Concurrency With Group Tasks in Swift
6. Introduction to Unstructured Concurrency in Swift
7. Unstructured Concurrency With Detached Tasks in Swift
8. Understanding Actors in the New Concurrency Model in Swift
9. @MainActor and Global Actors in Swift
10. Sharing Data Across Tasks with the @TaskLocal property wrapper in the new Swift Concurrency Model
11. Using AsyncSequence in Swift
12. Modern Swift Concurrency Summary, Cheatsheet, and Thanks

Before you try to dive in with concurrency in Swift, you need to understand async/await. There’s no way around it. While async/await are not the only concurrency options, Apple’s SDKs are starting to make heavy use of them. There is no doubt that third-party library providers will start offering these as well.

Modern Concurrency in Swift: Introduction

Published on June 16, 2021

Introduction

This article series was originally written creating examples using Xcode 13 beta 1. The articles in the series, code samples, and provided sample projects have been updated for Xcode 13 beta 3.

This is a tutorial series focused on the new async/await APIs Apple introduced in WWDC2021. I do not know how many articles it is going to have yet, but they will be posted in the upcoming weeks.