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

Repeating the function invocation recursively


As a programmer, especially in object-oriented programming, we usually use the iteration technique to repeat our process. For now, we will discuss the recursion method to repeat our process and use it in the functional approach. Basically, recursion and iteration perform the same task, which is to solve a complicated task piece by piece then combine the results. However, they have a difference. The iteration process emphasizes that we should keep repeating the process until the task is done, whereas recursion emphasizes that need to break the task up into smaller pieces until we can solve the task, then combine the result. We can use the iteration process when we need to run a certain process until the limit is reached or read a stream until it reaches eof(). Also, recursion can give the best value when we use it, for instance, on the calculation of a factorial.

Performing the iteration procedure to repeat the process

We will start with the iteration...