Book Image

Hands-On Functional Programming with C++

By : Alexandru Bolboaca
Book Image

Hands-On Functional Programming with C++

By: Alexandru Bolboaca

Overview of this book

Functional programming enables you to divide your software into smaller, reusable components that are easy to write, debug, and maintain. Combined with the power of C++, you can develop scalable and functional applications for modern software requirements. This book will help you discover the functional features in C++ 17 and C++ 20 to build enterprise-level applications. Starting with the fundamental building blocks of functional programming and how to use them in C++, you’ll explore functions, currying, and lambdas. As you advance, you’ll learn how to improve cohesion and delve into test-driven development, which will enable you in designing better software. In addition to this, the book covers architectural patterns such as event sourcing to help you get to grips with the importance of immutability for data storage. You’ll even understand how to “think in functions” and implement design patterns in a functional way. By the end of this book, you’ll be able to write faster and cleaner production code in C++ with the help of functional programming.
Table of Contents (23 chapters)
Free Chapter
1
Section 1: Functional Building Blocks in C++
7
Section 2: Design with Functions
12
Section 3: Reaping the Benefits of Functional Programming
17
Section 4: The Present and Future of Functional Programming in C++

Section 1: Functional Building Blocks in C++

In this section, we will learn about the basic building blocks of functional programming and how to use them in C++. First, we will look at what functional programming is and how it is different from and similar to object-oriented programming (OOP). Then, we will dive into the fundamental idea of immutability and learn how to write pure functions in C++—that is, functions that don't change state. We will then learn how to use lambdas and how to write pure functions using them.

Once we master those building blocks, we can move on to operations with functions. In functional programming, functions are data, so we can pass them around and make operations with them. We will learn about partial application and currying, two fundamental and closely-related operations. We will also see how to compose functions. These operations...