Book Image

Learning Rust

By : Vesa Kaihlavirta
Book Image

Learning Rust

By: Vesa Kaihlavirta

Overview of this book

Rust is a highly concurrent and high performance language that focuses on safety and speed, memory management, and writing clean code. It also guarantees thread safety, and its aim is to improve the performance of existing applications. Its potential is shown by the fact that it has been backed by Mozilla to solve the critical problem of concurrency. Learning Rust will teach you to build concurrent, fast, and robust applications. From learning the basic syntax to writing complex functions, this book will is your one stop guide to get up to speed with the fundamentals of Rust programming. We will cover the essentials of the language, including variables, procedures, output, compiling, installing, and memory handling. You will learn how to write object-oriented code, work with generics, conduct pattern matching, and build macros. You will get to know how to communicate with users and other services, as well as getting to grips with generics, scoping, and more advanced conditions. You will also discover how to extend the compilation unit in Rust. By the end of this book, you will be able to create a complex application in Rust to move forward with.
Table of Contents (21 chapters)
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Title Page
Preface
Free Chapter
1
Introducing and Installing Rust
4
Conditions, Recursion, and Loops

The three-step program


There are essentially three steps to using a library within your Rust application:

  1. Including the dependency.
  2. Writing code that uses the library.
  3. Building your application to link to the library.

The most difficult stage is the second as it requires writing code, call back code, and other such wrappers to use the library.

Including the dependency

As with using any library not provided by Prelude, the compiler has to know of the existence of the library. As we did in Chapter 8, The Rust Application Lifetime, we let the compiler know to expect an external library by including in the Cargo.toml file, as follows:

[dependency] 
libc = "0.2.0" 

The figure in quotes is the library version. This is useful to have in as it enables the compiled Rust application to only run against a particular version of the library, which guarantees the code required will be in the library. The downside is that in order to always ensure the library is available, the compiled binary will need to ship...