Book Image

Learn Kotlin Programming - Second Edition

By : Stephen Samuel, Stefan Bocutiu
Book Image

Learn Kotlin Programming - Second Edition

By: Stephen Samuel, Stefan Bocutiu

Overview of this book

Kotlin is a general-purpose programming language used for developing cross-platform applications. Complete with a comprehensive introduction and projects covering the full set of Kotlin programming features, this book will take you through the fundamentals of Kotlin and get you up to speed in no time. Learn Kotlin Programming covers the installation, tools, and how to write basic programs in Kotlin. You'll learn how to implement object-oriented programming in Kotlin and easily reuse your program or parts of it. The book explains DSL construction, serialization, null safety aspects, and type parameterization to help you build robust apps. You'll learn how to destructure expressions and write your own. You'll then get to grips with building scalable apps by exploring advanced topics such as testing, concurrency, microservices, coroutines, and Kotlin DSL builders. Furthermore, you'll be introduced to the kotlinx.serialization framework, which is used to persist objects in JSON, Protobuf, and other formats. By the end of this book, you'll be well versed with all the new features in Kotlin and will be able to build robust applications skillfully.
Table of Contents (21 chapters)
Free Chapter
1
Section 1: Fundamental Concepts in Kotlin
5
Section 2: Practical Concepts in Kotlin
15
Section 3: Advanced Concepts in Kotlin

Definition

The way we design and build software has changed in the past few years. We are developing software designed to run in the cloud, and it is driven by fast-changing business needs. If you are already familiar with this world, you will recognize some of the drivers behind the approach we take these days:

  • There is a demand for reducing the costs while still improving performance
  • You have to continuously deliver new functionality to meet business growth, and the turnaround needs to be fast
  • The software has to reach customers around the globe and cope with the high demand it might produce while running at such a scale

To see a definition of what microservices are and how we arrived at such principles, let's do an exercise. Imagine you had the amazing idea of Airbnb, and there wasn't anything like it on the market. Now you are in the position to define a high-level...