Book Image

Mastering Kotlin

By : Nate Ebel
Book Image

Mastering Kotlin

By: Nate Ebel

Overview of this book

Using Kotlin without taking advantage of its power and interoperability is like owning a sports car and never taking it out of the garage. While documentation and introductory resources can help you learn the basics of Kotlin, the fact that it’s a new language means that there are limited learning resources and code bases available in comparison to Java and other established languages. This Kotlin book will show you how to leverage software designs and concepts that have made Java the most dominant enterprise programming language. You’ll understand how Kotlin is a modern approach to object-oriented programming (OOP). This book will take you through the vast array of features that Kotlin provides over other languages. These features include seamless interoperability with Java, efficient syntax, built-in functional programming constructs, and support for creating your own DSL. Finally, you will gain an understanding of implementing practical design patterns and best practices to help you master the Kotlin language. By the end of the book, you'll have obtained an advanced understanding of Kotlin in order to be able to build production-grade applications.
Table of Contents (25 chapters)
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Section 1: Kotlin – A Modern Solution to Application Development
Section 2: Putting the Pieces Together – Modeling Data, Managing State, and Application Architecture
Section 3: Play Nice – Integrating Kotlin With Existing Code
Section 4: Go Beyond – Exploring Advanced and Experimental Language Features
Section 5: The Wide World of Kotlin – Using Kotlin across the Entire Development Stack

Embracing first-class functions

Kotlin includes first-class support for functions, which means that functions can be invoked, and entire applications written, without having to rely on classes and methods as in Java. This represents a significant shift in how code is written using Kotlin.

This support for functions enables a variety of useful features in the language:

  • Functional programming can be achieved because of Kotlin's functions.
  • Extension functions give the ability to modify and adapt APIs to fit our needs.
  • Higher-order functions are the backbone of the Standard library.
  • First-class functions allow developers to remove entire categories of "helper" and "utility" classes that existed for the sole purpose of containing static methods.

Function types...