Book Image

Reactive Programming in Kotlin

By : Rivu Chakraborty
Book Image

Reactive Programming in Kotlin

By: Rivu Chakraborty

Overview of this book

In today's app-driven era, when programs are asynchronous, and responsiveness is so vital, reactive programming can help you write code that's more reliable, easier to scale, and better-performing. Reactive programming is revolutionary. With this practical book, Kotlin developers will first learn how to view problems in the reactive way, and then build programs that leverage the best features of this exciting new programming paradigm. You will begin with the general concepts of Reactive programming and then gradually move on to working with asynchronous data streams. You will dive into advanced techniques such as manipulating time in data-flow, customizing operators and provider and how to use the concurrency model to control asynchronicity of code and process event handlers effectively. You will then be introduced to functional reactive programming and will learn to apply FRP in practical use cases in Kotlin. This book will also take you one step forward by introducing you to Spring 5 and Spring Boot 2 using Kotlin. By the end of the book, you will be able to build real-world applications with reactive user interfaces as well as you'll learn to implement reactive programming paradigms in Android.
Table of Contents (20 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Dedication
Preface

Chapter 2. Functional Programming with Kotlin and RxKotlin

Functional programming paradigms are slightly different than that of Object-oriented programming (OOP). It focuses on the use of declarative and expressive programs and immutable data rather than on statements. The definition of functional programming says functional programming is a programming system that relies on structuring the program as the evaluation of mathematical functions with immutable data, and it avoids state-change. It is a declarative programming paradigm that suggests use of small, reusable declarative functions.

We have seen the definition of functional programming; now, don't you want to delve into its definition and see what it exactly means? Do all languages support functional programming? If not, then which languages does and what about Kotlin? What exactly does reactive programming have to do with functional programming? And, finally, what do we need to learn, for functional programming?

In this chapter, we...