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++

Summary

We had such an interesting journey in this chapter! We managed to link two styles of design that seem disjointed—OOP and functional programming, in a very elegant manner. Pure functions can be grouped into classes based on the principle of cohesion. We just need to exercise our imagination and think of scenarios in which functions might change, and decide which functions to group together. Reversely, we can always move functions from a class into multiple lambdas by making them pure and reversing the partial application.

There is no friction between OOP and functional programming; they are just two different ways of structuring the code that implements features.

Our journey into software design using functions has not finished yet. In the next chapter, we will discuss how to design functions using test-driven development (TDD).

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