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)

Building a project with Cargo – imgtool

We now have a fairly good understanding of how to manage projects using Cargo. To drive the concepts in, we will build a command-line application that uses a third-party crate. The whole point of this exercise is to become familiar with the usual workflow of building projects by using third-party crates, so we're going to skip over a lot of details about the code we write here. You are encouraged to check out the documentation of the APIs that are used in the code, though.

We'll use a crate called image from crates.io. This crate provides various image manipulation APIs. Our command-line application will be simple; it will take a path to an image file as its argument, rotate it by 90 degrees, and write back to the same file, every time when run.

We'll cd into the imgtool directory, which we created previously. First...