Book Image

Hands-On Functional Programming in Rust

By : Andrew Johnson
Book Image

Hands-On Functional Programming in Rust

By: Andrew Johnson

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 Rust, you can develop robust and scalable applications that fulfill modern day software requirements. This book will help you discover all the Rust features that can be used to build software in a functional way. We begin with a brief comparison of the functional and object-oriented approach to different problems and patterns. We then quickly look at the patterns of control flow, data the abstractions of these unique to functional programming. The next part covers how to create functional apps in Rust; mutability and ownership, which are exclusive to Rust, are also discussed. Pure functions are examined next and you'll master closures, their various types, and currying. We also look at implementing concurrency through functional design principles and metaprogramming using macros. Finally, we look at best practices for debugging and optimization. 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 (12 chapters)

Performance, Debugging, and Metaprogramming

Writing fast efficient code can be something to be proud of. It also might be a waste of your employer's resources. In the performance section, we will explore how to tell the difference between the two and give best-practices, processes, and guidelines to keep your application slim.

In the debugging section, we offer tips to help find and resolve bugs faster. We also introduce the concept of defensive coding, which describes techniques and habits to prevent or isolate potential issues.

In the metaprogramming section, we explain macros and other features that are similar to macros. Rust has a fairly sophisticated metaprogramming system that allows the user or libraries to extend the language with automatic code generation or custom syntax forms.

In this chapter, we will learn the following:

  • Recognizing and applying good performant...