Book Image

Learning Concurrency in Kotlin

By : Miguel Angel Castiblanco Torres
Book Image

Learning Concurrency in Kotlin

By: Miguel Angel Castiblanco Torres

Overview of this book

Kotlin is a modern and statically typed programming language with support for concurrency. Complete with detailed explanations of essential concepts, practical examples and self-assessment questions, Learning Concurrency in Kotlin addresses the unique challenges in design and implementation of concurrent code. This practical guide will help you to build distributed and scalable applications using Kotlin. Beginning with an introduction to Kotlin's coroutines, you’ll learn how to write concurrent code and understand the fundamental concepts needed to write multithreaded software in Kotlin. You'll explore how to communicate between and synchronize your threads and coroutines to write collaborative asynchronous applications. You'll also learn how to handle errors and exceptions, as well as how to work with a multicore processor to run several programs in parallel. In addition to this, you’ll delve into how coroutines work with each other. Finally, you’ll be able to build an Android application such as an RSS reader by putting your knowledge into practice. By the end of this book, you’ll have learned techniques and skills to write optimized code and multithread applications.
Table of Contents (11 chapters)

Improving the UI of the RSS Reader

This is a good moment to make our RSS Reader more user friendly. Let's update the application so that it displays the information of the news articles as a list that the user can scroll, and let's display not only the headline of the article but also a summary of it and the feed that it belongs to.

Giving each feed a name

First, let's start by creating a new package, model, so that we can organize our data classes, and let's create a Kotlin model.kt inside it, as shown:

We want to be able to identify a feed not only by its URL but also by a name, so let's now create a data class called Feed inside our new model file. This class will hold pairs of a name and a url...