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...

  • First, we need to implement a fake futures::task::Waker for when we create a new context (this is what our FakeWaker structure is for on lines 11 through 14)
  • Since BiLocks require two owners, we will divide the ownership into two different structures, called Reader<T> (on lines 16 through 18) and Writer<T> (on lines 20 through 22)
  • Our split() -> (Reader<u32>, Writer<u32>) function is just to structure/organize our code a bit better, and when calling BiLock::new(t: T) the return type is a tuple of two futures_util::lock::BiLock elements

Now that the preliminary code has been explained, let's dive into our main() function:

  • On lines 30 through 34 we set up a new LocalPool, LocalExecutor, Waker (FakeWaker), and a LocalMap (map storage of local data within tasks) for creating a new Context, since we will be polling our locks manually for demonstration purposes.
  • Lines 38 and 40 use the futures_util::lock::BiLock::poll_lock function, which returns...