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

You've just obtained lambda superpowers! Not only can you write simple lambdas in C++, but you also know the following:

  • How to capture variables from the context
  • How to specify the default capture type—by reference or by value
  • How to write immutable lambdas even when capturing values
  • How to use lambdas in classes

We've also touched on the design principle of low coupling and how lambdas can help with this. We'll keep mentioning this principle in the following chapters.

Would you believe me if I told you that lambdas are even more powerful than what we've seen so far? Well, we'll discover that we can grow from simple to complex lambdas through functional composition.