Book Image

Learning C++ Functional Programming

By : Wisnu Anggoro
5 (1)
Book Image

Learning C++ Functional Programming

5 (1)
By: Wisnu Anggoro

Overview of this book

Functional programming allows developers to divide programs into smaller, reusable components that ease the creation, testing, and maintenance of software as a whole. Combined with the power of C++, you can develop robust and scalable applications that fulfill modern day software requirements. This book will help you discover all the C++ 17 features that can be applied to build software in a functional way. The book is divided into three modules—the first introduces the fundamentals of functional programming and how it is supported by modern C++. The second module explains how to efficiently implement C++ features such as pure functions and immutable states to build robust applications. The last module describes how to achieve concurrency and apply design patterns to enhance your application’s performance. Here, you will also learn to optimize code using metaprogramming in a functional way. By the end of the book, you will be familiar with the functional approach of programming and will be able to use these techniques on a daily basis.
Table of Contents (15 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Refactoring the imperative class to become a functional class


Indeed, the preceding Customer class can work well, and we have successfully invoked its methods. However, the class can still be tweaked by transforming it into a functional class. As we can see in the preceding code, we can implement a pure function, first-class function, higher-order function, and memoization to it to make it become functional. So, in this section, we will refactor the Customer class to become a functional class and use the knowledge we have from the previous chapters. In the upcoming section, we will implement the functional method that we have discussed in the previous chapter, which is the first-class function.

Passing a function as a parameter

As we discussed in Chapter 2, Manipulating Functions in Functional Programming, we can rewrite the function to be a first-class function, which means we can pass a function to another function. We will simplify the definition of all the four methods we have in the Step01...