Master techniques and concepts of functional programming to deliver safer, simpler, and more effective Kotlin code.

In

Functional Programming in Kotlin

you will learn:

Functional programming techniques for real-world applications

Write combinator libraries

Common structures and idioms in functional design

Simplicity and modularity (and fewer bugs!)

Functional Programming in Kotlin

is a reworked version of the bestselling

Functional Programming in Scala

, with all code samples, instructions, and exercises translated into the powerful Kotlin language. In this authoritative guide, you’ll take on the challenge of learning functional programming from first principles. Complex concepts are demonstrated through exercises that you’ll love to test yourself against. You’ll start writing Kotlin code that’s easier to read, easier to reuse, better for concurrency, and less prone to bugs and errors.

About the technology

Improve performance, increase maintainability, and eliminate bugs! How? By programming the functional way. Kotlin provides strong support for functional programming, taking a pragmatic approach that integrates well with OO codebases. By applying the techniques you’ll learn in this book, your code will be safer, less prone to errors, and much easier to read and reuse.

About the book

Functional Programming in Kotlin

teaches you how to design and write Kotlin applications using typed functional programming. Offering clear examples, carefully-presented explanations, and extensive exercises, it moves from basic subjects like types and data structures to advanced topics such as stream processing. This book is based on the bestseller

Functional Programming in Scala

by Rúnar Bjarnason and Paul Chiusano.

What's inside

Functional programming techniques for real-world situations

Common structures and idioms in functional design

Simplicity, modularity, and fewer bugs!

About the reader

For Kotlin developers. No functional programming experience required.

About the author

Marco Vermeulen

has two decades of programming experience on the JVM.

Rúnar Bjarnason

and

Paul Chiusano

are the authors of

Functional Programming in Scala

.

Tabel of Contents

PART 1 INTRODUCTION TO FUNCTIONAL PROGRAMMING

1 What is functional programming?

2 Getting started with functional programming in Kotlin

3 Functional data structures

4 Handling errors without exceptions

5 Strictness and laziness

6 Purely functional state

PART 2 FUNCTIONAL DESIGN AND COMBINATOR LIBRARIES

7 Purely functional parallelism

8 Property-based testing

9 Parser combinators

PART 3 COMMON STRUCTURES IN FUNCTIONAL DESIGN

10 Monoids

11 Monads and functors

12 Applicative and traversable functors

PART 4 EFFECTS AND I/O

13 External effects and I/O

14 Local effects and mutable state

15 Stream processing and incremental I/O

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