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 to do it...

  1. In the folder bin, create a file called

  2. Add the following code and run it with cargo run --bin rwlock:

1 use std::sync::{Arc, RwLock};
2 use std::thread;
4 fn main() {
5 // An RwLock works like the RefCell, but blocks the current
6 // thread if the resource is unavailable
7 let resource = Arc::new(RwLock::new("Hello
9 // The reader_a thread will print the current content of
10 // our resource fourty times
11 let reader_a = {
12 let resource = resource.clone();
13 thread::spawn(move || {
14 for _ in 0..40 {
15 // Lock resource for reading access
16 let resource = resource
17 .read()
18 .expect("Failed to lock resource for reading");
19 println!("Reader A says: {}", resource);
20 }
21 })
22 };
24 // The reader_b thread will print the current content of
25 // our resource fourty times as well. Because RwLock allows
26 // multiple readers, it will execute at the same time as
27 let reader_b = {