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...

Let's start by introducing the structures that participate in this example:

  • PlayerStatus is an enumerator for maintaining a global state on the player's instance. The variants are:
    • Loading, which is the initial state
    • Default, which is applied after we are done loading the player's stats
    • Jumping is a special state that won't allow us to add points to the player's scoreboard due to the rules of the game
  • Player holds our player's main attributes, along with a special attribute called ticks that stores the amount of cycles that we want to run through with poll() before assigning the player's status from Loading to Default.

Now, onto our implementations:

  • Jumping down to the fn set_status(&mut self, status: PlayerStatus) -> FutureResult<&mut Self, Never> function on our Player structure, we will notice a return value of FutureResult, which tells futures that this function will immediately return a computed value...