Coroutines

A coroutine is a powerful feature of the Kotlin programming language. Its main objective is to allow for suspending a function while it waits for the result of another function that invokes a long-term operation. This feature allows us to write asynchronous code without callbacks in a sequential way.

This section will cover the following topics:

• Coroutine basics
• Call stacks
• Coroutine testing
• Coroutine scope

Coroutine basics

If you are familiar with the concept of threads, you will know that each thread has its own call stack. We will cover the thread's call stack topic in the next section. The creation of a new thread is a complex operation that takes about two megabytes of memory. Coroutines use a thread...