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

Benefits and drawbacks of metaprogramming


After our discussion about template metaprogramming, the following are the advantages we derive:

  • Template metaprogramming has no side effect since it is immutable, so we cannot modify an existing type
  • There is better code readability compared to code that does not implement metaprogramming
  • It reduces repetition of the code

Although we can gain benefits from template metaprogramming, there are several disadvantages, which are as follows:

  • The syntax is quite complex.
  • The compilation time takes longer since we now execute code during compile-time.
  • The compiler can optimize the generated code much better and perform inlining, for instance, the C qsort() function and the C++ sort template. In C, the qsort() function takes a pointer to a comparison function, so there will be one copy of the qsort code that is not inlined. It will make a call through the pointer to the comparison routine. In C++, std::sort is a template, and it can take a functor object as a comparator...