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)

Data structures

Creating a data structure is one of the ways to add a new data type to Rust. A data structure is a group of variables that have been attached to each other, resulting in a single new data type that means all of these, together.

A new structure is defined using the struct keyword:

pub struct Constrained {
pub min: i32,
pub max: i32,
current: i32,
Notice the commas after each contained variable is defined. It can be tempting to use semicolons there, but that would cause a compiler error. The final comma is optional, but recommended, because it means that the lines can be rearranged without having to pay attention to where a comma might be missing, among other reasons.

Here, we've defined a structure called Constrained, which is made up of three different 32-bit unsigned integer variables. The structure itself is public, meaning that it can be used...