Reactive Programming in Kotlin

Introduction to concurrency

The definition of concurrency can be described as follows:

As a programming paradigm, concurrent computing is a form of modular programming, namely factoring an overall computation into subcomputations that may be executed concurrently.                                                                                                                                – Wikipedia

As the definition says, concurrency is all about breaking the entire task into small parts and then executing them concurrently (there's a small difference between concurrent execution and parallel execution, which we will discuss shortly).

So, what does it mean to execute subcomputations concurrently? Let's look at a real-life example. Think ...