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)

More about functions

Now, we're going to fill in the blanks left in the earlier discussion of functions by talking about parameters and return types.


Parameters allow us to provide information to a function at the time when we ask it to run.

Asking a function to run is called calling it.

When we define a function, we can tell it the variable names and types we want it to use for receiving parameters, as in the following example:

pub fn set(&mut self, value: i32) {
self.current = value;

We'll talk about self in the Implementing behavior for types section of this chapter. For now, ignore it and take a look at value. Here, we've provided a name and data type, just as we would if we were using...