Book Image

Rust Quick Start Guide

By : Daniel Arbuckle
Book Image

Rust Quick Start Guide

By: Daniel Arbuckle

Overview of this book

Rust is an emerging programming language applicable to areas such as embedded programming, network programming, system programming, and web development. This book will take you from the basics of Rust to a point where your code compiles and does what you intend it to do! This book starts with an introduction to Rust and how to get set for programming, including the rustup and cargo tools for managing a Rust installation and development work?ow. Then you'll learn about the fundamentals of structuring a Rust program, such as functions, mutability, data structures, implementing behavior for types, and many more. You will also learn about concepts that Rust handles differently from most other languages. After understanding the Basics of Rust programming, you will learn about the core ideas, such as variable ownership, scope, lifetime, and borrowing. After these key ideas, you will explore making decisions in Rust based on data types by learning about match and if let expressions. After that, you'll work with different data types in Rust, and learn about memory management and smart pointers.
Table of Contents (10 chapters)

Traits that can be derived

For some traits, the compiler itself knows how to implement them for a type. If we want them, we only have to tell it that we do, and it will take care of the rest for us.

We still have the option of manually implementing derivable traits, but that would usually just be a waste of time.

Telling the compiler that we want a data type to have a derivable trait is easy.

Here, we're telling it that we want our CopyExample enumeration to implement Copy and Clone:

#[derive(Copy, Clone)]
pub enum CopyExample {

A trait can only be derived if the people who created the trait were able to write a program to generate the trait implementation. When we write #[derive(Copy, Clone)], we're telling the compiler to go find those programs for deriving Copy and Clone in the source code of the packages where the traits were defined, and run those...