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. Create a Rust project to work on during this chapter with cargo new chapter-three.
  2. Navigate into the newly created chapter-three folder. For the rest of this chapter, we will assume that your command line is currently in this directory.
  3. Inside the src folder, create a new folder called bin.
  4. Delete the generated lib.rs file, as we are not creating a library.
  5. In the src/bin folder, create a file called text_files.rs.
  6. Add the following code and run it with cargo run --bin text_files:
1    use std::fs::{File, OpenOptions};
2 use std::io::{self, BufReader, BufWriter, Lines, Write};
3 use std::io::prelude::*;
4
5 fn main() {
6 // Create a file and fill it with data
7 let path = "./foo.txt";
8 println!("Writing some data to '{}'", path);
9 write_file(path, "Hello World!\n").expect("Failed to write to
file");
10 // Read entire file as a string
11 let content = read_file...