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...

The join_all() function:

  • Collects results from several futures and returns a new future with the futures::future::JoinAll<F: Future> trait
  • The new future will perform commands for all of the aggregated futures within the futures::future::join_all call, returning a vector of Vec<T: Future::Item> in FIFO ordering
  • An error will return itself immediately and cancel the other related futures

And the shared() function:

  • futures::FutureExt::shared will create a handle that can be cloned, which resolves to the returning value of <T as futures::future::SharedItem> which can be deferred into T.
  • Useful for polling a future on more than one thread
  • This method is enabled only when Rust's std option is enabled (which it is by default)
  • The underlying result is futures::future::Shared<Future::Item>, which implements Send and Sync traits
  • Using futures::future::Shared::peek(&self) will return a value without blocking if any single shared handle has been...