Kotlin Standard Library Cookbook: Master the powerful Kotlin standard library through practical code examples

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Expressive Functions and Adjustable Interfaces

In this chapter, we will cover the following recipes:

Declaring adjustable functions with default parameters
Declaring interfaces containing default implementations
Extending functionalities of classes
Destructuring types
Returning multiple data
Inlining parameters of closure type
Infix notations for functions
Smart types checking with generic reified parameters
Overloading operators

Key benefits

Get the most out of the Kotlin library to develop high-quality portable applications

Explore Kotlin’s powerful support for data processing and I/O operations

Discover ways to enhance your Android application development

Description

For developers who prefer a more simplistic approach to coding, Kotlin has emerged as a valuable solution for effective software development. The Kotlin standard library provides vital tools that make day-to-day Kotlin programming easier. This library features core attributes of the language, such as algorithmic problems, design patterns, data processing, and working with files and data streams. With a recipe-based approach, this book features coding solutions that you can readily execute. Through the book, you’ll encounter a variety of interesting topics related to data processing, I/O operations, and collections transformation. You’ll get started by exploring the most effective design patterns in Kotlin and understand how coroutines add new features to JavaScript. As you progress, you'll learn how to implement clean, reusable functions and scalable interfaces containing default implementations. Toward the concluding chapters, you’ll discover recipes on functional programming concepts, such as lambdas, monads, functors, and Kotlin scoping functions, which will help you tackle a range of real-life coding problems. By the end of this book, you'll be equipped with the expertise you need to address a range of challenges that Kotlin developers face by implementing easy-to-follow solutions.

Who is this book for?

This book is for software developers who are familiar with Kotlin’s basics and want to discover more advanced features and concepts, especially those provided by the Kotlin standard library. Experienced software developers familiar with the functional programming paradigm and other programming languages who want to switch to Kotlin will also find this book useful. It will also help Java developers looking to switch to Kotlin and integrate it into existing Java Virtual Machine (JVM) projects.

What you will learn

Work with ranges, progressions, and sequences in use cases

Add new functionalities to current classes with Kotlin extensions

Understand elements such as lambdas, closures, and monads

Build a REST API consumer with Retrofit and a coroutine adapter

Discover useful tips and solutions for creating Android projects

Explore the benefits of standard library features

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