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)

Functional Data Structures

Data structures are the second most basic building blocks of programming, following control flow. After early languages developed control flow structures, it quickly became apparent that simple variable labels were insufficient for developing complex programs. Data structures have evolved from the basic concept of a sized datum stored at an address to the concept of strings and arrays, followed by mixed structures, and finally collections.

In this chapter, we will revisit the project introduced in Chapter 2, Functional Control Flow. The project requirements have expanded to accommodate feedback from the potential client. There are also specific performance targets that must be met due to competition from a rival developer. To help our business succeed, we must now improve the previous simulation and ensure that it meets customer demand and performance...