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Modern Web Development with Kotlin

A concise and practical step-by-step guide

As the title suggests, this book is about Web development with Kotlin. It covers just enough basics to get started but mostly concentrates on the practical aspect of using the language. In particular, it guides you through the process of building a technology-packed Web application while using popular backend and frontend technologies.

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About

About

About the Book

In this book, you will learn how to use Kotlin to build Web applications on top of Vert.x, access databases, test and deploy your code. You will also learn to use Gradle and integrate it with Webpack, Sass and React.

The book doesn't expect any prior Kotlin experience as the basics are briefly explained in the first chapters. The required functional programming concepts are also explained in the beginning.

Who this book is for

This book is intended for people who are interested in learning Kotlin and applying it for writing Web applications. It assumes a good knowledge of any programming language and familiarity with Web technologies. 

Acknowledgements

The cover illustration was designed by Freepik

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Author

About the Author

Denis Kalinin

Having started as a Java developer in a middle-sized enterprise company, over the course of my career I've worked in several different countries and gained quite a bit of experience. During the last eight years I've used a great number of libraries and frameworks from JavaServer Faces to React. 

Contents

Table of Contents

Preface

Preparing the environment

  1. Choosing the operating system
  2. Installing Java Development Kit
  3. Installing Kotlin
  4. Installing IntelliJ IDEA
  5. Installing Atom Editor

Build tools

  1. Command line
  2. Gradle

Editing source files

  1. Using Atom
  2. Using IntelliJ IDEA

Language fundamentals

  1. Using the REPL
  2. Defining values
  3. Lambdas
  4. Type hierarchy
  5. Nullable types
  6. Collections
  7. Defining classes
  8. Defining objects
  9. Type parametrization
  10. Extension functions
  11. Packages and imports
  12. Loops and conditionals
  13. String templates
  14. Interfaces

Functional programming

  1. Higher-order functions
  2. Tuples and data classes
  3. Laziness
  4. Algebraic data types
  5. Option
  6. Either
  7. Promise

Working with Vert.x

  1. Installing Vert.x
  2. Dispatching requests
  3. Thymeleaf templates
  4. Watching for source changes
  5. Serving asynchronous results
  6. Adding sunrise and sunset times
  7. Using Java 8 Date and Time API
  8. Adding weather information
  9. Moving logic into services
  10. Serving static assets

Frontend integration

  1. Setting up nvm
  2. Choosing the versions
  3. package.json
  4. GruntJS and Gulp
  5. Module bundlers
  6. Using EcmaScript 6 with Babel
  7. Explaining React
  8. Separating the frontend
  9. Initializing the frontend project
  10. webpack.config.js explained
  11. Using React
  12. Sending data via JSON
  13. Using Sass with Webpack
  14. Extracting styles

Authenticating users

  1. Vert.x configuration
  2. Installing PostgreSQL
  3. Pooling connections with HikariCP
  4. Hashing passwords with BCrypt
  5. Migrating with Flyway
  6. Implementing authentication logic
  7. Page templates

Testing and logging

  1. Testing with KotlinTest
  2. Logging in Vert.x

Hosting and deployment

  1. Hosting considerations
  2. Preparing the distribution

Closing remarks

Appendix A. Packages

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