Kotlin Coroutines

Kotlin coroutines revolutionized JVM development, especially on Android and the backend. They let us easily make efficient and reliable multithreading. Its cutting-edge design and features are suited ideally for modern use cases. In this book, we will explore Kotlin coroutines – both built-in support and kotlinx.coroutines library.

Table of Contents

Part 1: Understanding Kotlin Coroutines

Why Kotlin Coroutines?

Sequence builder

How does suspension work?

Coroutines under the hood

Coroutines: built-in support vs library

Part 2: Kotlin Coroutines library

Starting coroutines

The bigger picture

Coroutine context

Dispatchers

Job and coroutine lifecycle

Cancellation

Exception handling

Constructing a coroutine scope

Synchronizing access to mutable state

Testing Kotlin Coroutines

Part 3: Channel and Flow

Channel

Select

Hot and cold data sources

Flow introduction

Understanding Flow

Flow building

Flow lifecycle functions

Flow processing

Shared Flow and StateFlow

Testing flow

Part 4: Kotlin Coroutines in practice

Common use cases

Using coroutines from other languages

Launching coroutines vs. suspending functions

Best practices

The End

Exercise solutions

About the Author

Marcin Moskała is an experienced Android developer, teacher, and official Jetbrains’ Kotlin training partner.

He is the founder of Kt. Academy, author of the books Android Development with Kotlin, Kotlin Essentials, Advanced Kotlin, Functional Kotlin, Effective Kotlin and Kotlin Coroutines. Deep dive. He is also an active programming community member, the main author of the most significant medium publication about Kotlin, and a speaker invited to programming conferences.