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++

Refactoring to and through pure functions

Refactoring is an important and continuous part of software development. The main reason is the continuous change in requirements, driven by the changes in the world around the applications that we build. Our clients keep learning about the ecosystem in which products work, and need us to adapt these products to the new reality they discover. As a result, our code, even when perfectly structured, is almost always behind our current understanding of the problems that we're solving.

Structuring our code perfectly is no easy feat either. Programmers are people, so we make mistakes, lose focus, and sometimes fail to find the best solutions. The only way to deal with this complex situation is by using merciless refactoring; that is, after we make things work, we improve the code structure until the code is as good as it can be under the...