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)

Handling errors in futures

In a real application, we would not be returning a value instantly from an asynchronous function that directly returns Async::Ready<T> or FutureResult<T, E>. Network requests time out, buffers become full, services become unavailable due to bugs or outages, and many more issues pop up on a daily basis. As much as we like to build order from chaos, usually chaos wins due to naturally-occurring entropy (programmers may know this as scope creep) and decay (software updates, new computer science paradigms, and so on). Luckily for us, the futures library offers us a simple way to implement error handling.