Book Image

The Complete Rust Programming Reference Guide

By : Rahul Sharma, Vesa Kaihlavirta, Claus Matzinger
Book Image

The Complete Rust Programming Reference Guide

By: Rahul Sharma, Vesa Kaihlavirta, Claus Matzinger

Overview of this book

Rust is a powerful language with a rare combination of safety, speed, and zero-cost abstractions. This Learning Path is filled with clear and simple explanations of its features along with real-world examples, demonstrating how you can build robust, scalable, and reliable programs. You’ll get started with an introduction to Rust data structures, algorithms, and essential language constructs. Next, you will understand how to store data using linked lists, arrays, stacks, and queues. You’ll also learn to implement sorting and searching algorithms, such as Brute Force algorithms, Greedy algorithms, Dynamic Programming, and Backtracking. As you progress, you’ll pick up on using Rust for systems programming, network programming, and the web. You’ll then move on to discover a variety of techniques, right from writing memory-safe code, to building idiomatic Rust libraries, and even advanced macros. By the end of this Learning Path, you’ll be able to implement Rust for enterprise projects, writing better tests and documentation, designing for performance, and creating idiomatic Rust code. This Learning Path includes content from the following Packt products: • Mastering Rust - Second Edition by Rahul Sharma and Vesa Kaihlavirta • Hands-On Data Structures and Algorithms with Rust by Claus Matzinger
Table of Contents (29 chapters)
Title Page
Copyright
About Packt
Contributors
Preface
Index

Derive macros


We already saw that we can write #[derive(Copy, Debug)] on any struct, enum, or union type to get the Copy and Debug traits implemented for it, but this auto-derive feature is limited only to a few built-in traits in the compiler. With derive macros or macros 1.1, you get the ability to derive your own custom trait on any struct or enum or union type, thereby reducing the amount of boilerplate code that you would have written by hand. This may seem like a niche use case, but it is the most used procedural macro form, which high performance crates such as serde and diesel use. The derive macros only apply to data types such as structs, enums, or unions. Creating a custom derive macro for implementing a trait on a type requires the following steps:

  1. First, you need your type and the trait that you want to implement on the type. These can come from any crate, either locally defined or from a third party, provided that one of them has to be defined by you, because of the orphan rule...