Book Image

Rust Standard Library Cookbook

By : Jan Hohenheim, Daniel Durante
Book Image

Rust Standard Library Cookbook

By: Jan Hohenheim, Daniel Durante

Overview of this book

Mozilla’s Rust is gaining much attention with amazing features and a powerful library. This book will take you through varied recipes to teach you how to leverage the Standard library to implement efficient solutions. The book begins with a brief look at the basic modules of the Standard library and collections. From here, the recipes will cover packages that support file/directory handling and interaction through parsing. You will learn about packages related to advanced data structures, error handling, and networking. You will also learn to work with futures and experimental nightly features. The book also covers the most relevant external crates in Rust. By the end of the book, you will be proficient at using the Rust Standard library.
Table of Contents (12 chapters)

How it works...

This recipe doesn't introduce any new modules or concepts. It's here to provide you with a general idea of how to combine all the things you've learned in this recipe in a somewhat realistic context. Specifically, our context consists of code that manages clients that connect with us in some way.

Client [8] holds all information relevant to a connection. As a basic example, it currently contains the client's IP address. Other possibilities would be the client's username, location, device, ping, and so on.

The ConnectionHandler [14] itself holds a list, more specifically a HashMap, of the active connections, indexed by a unique ID. Analogous to that, it also stores the ID for the next connection.

We are using unique IDs instead of a Vec<Client> because clients might be able to connect, multiple times, to whatever service we are providing on the same device. The easiest example for this is multiple tabs open in a browser, all accessing the...