Book Image

Mastering Rust. - Second Edition

By : Rahul Sharma
Book Image

Mastering Rust. - Second Edition

By: Rahul Sharma

Overview of this book

Rust is an empowering language that provides a rare combination of safety, speed, and zero-cost abstractions. Mastering Rust – Second Edition is filled with clear and simple explanations of the language features along with real-world examples, showing you how you can build robust, scalable, and reliable programs. This second edition of the book improves upon the previous one and touches on all aspects that make Rust a great language. We have included the features from latest Rust 2018 edition such as the new module system, the smarter compiler, helpful error messages, and the stable procedural macros. You’ll learn how Rust can be used for systems programming, network programming, and even on the web. You’ll also learn techniques such as writing memory-safe code, building idiomatic Rust libraries, writing efficient asynchronous networking code, and advanced macros. The book contains a mix of theory and hands-on tasks so you acquire the skills as well as the knowledge, and it also provides exercises to hammer the concepts in. After reading this book, you will be able to implement Rust for your enterprise projects, write better tests and documentation, design for performance, and write idiomatic Rust code.
Table of Contents (19 chapters)

Actix-web basics

The Actix-web framework builds upon the actor model that's implemented by the actix crate, which we already covered in Chapter 7, Advanced Concepts. Actix-web advertises itself as a small, fast, and pragmatic HTTP web framework. It's primarily an asynchronous framework that relies internally on tokio and the futures crate but also provides a synchronous API and both of these APIs can be composed together seamlessly.

The entry point of any web application written using actix-web is the App struct. On an App instance, we can configure various route handlers and middlewares. We can also initialize our App with any state that we need to maintain across a request response. The route handlers that are provided on App implement the Handler trait and are simply functions that map a request to a response. They can also include request filters, which can forbid...