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++

Partial Application and Currying

We've already gone far in our quest to understand functional programming! We learned about pure functions and lambdas and dived into lambda calculus with the help of functional composition. We now know how to create functions from other functions.

There's still one more thing to learn about the basis of lambda calculus. Besides functional composition, we can also create functions from other functions through two operations—currying and partial application. This will complete our discussion on functional building blocks and allow you to move forward towards designing with functions.

The following topics will be covered in this chapter:

  • What is partial application?
  • How to use partial application in C++
  • What is currying?
  • How to curry functions in C++
  • The relationship between currying and partial application
  • How to combine currying...