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)

Code Organization and Application Architecture

Previously, we outlined some basic concepts of project planning and code architecture. The strategy we recommended specifically called for gathering and listing requirements before adapting them into pseudocode, stub code, and eventually a completed project. This process is still very applicable to larger projects, but we have not covered the aspect of file and module organization. How should code be grouped into files and modules?

To answer this question, we recommend something called the workshop model. Imagine a physical workshop with pegboards, shelves, jars, toolboxes, and larger equipment on the floor. When speaking about code architecture, experts often talk about different organizational strategies. It is possible to group code by type, by purpose, by project layer, or by convenience. There are infinite possible strategies...