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)

Writing and testing a crate – logic gate simulator

Armed with all of this knowledge, let's start things off with our logic gate simulation crate. We'll create a new project by running cargo new logic_gates --lib. Starting with primitive gates implemented as functions such as and, xor, and so on, we will write unit tests for these gates. Following that, we'll write integration tests by implementing a half adder that uses our primitive gates. During this process, we'll also get to write documentation for our crate.

First off, we'll start with some unit tests. Here's the initial crate code in its entirety:

//! This is a logic gates simulation crate built to demonstrate writing unit tests and integration tests

// logic_gates/src/lib.rs

pub fn and(a: u8, b: u8) -> u8 {
unimplemented!()
}

pub fn xor(a: u8, b: u8) -> u8 {
unimplemented!(...