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)

Getting ready

In this chapter, we are going to talk about endianness. It is a way of describing how the values in a buffer are ordered. There are two ways to order them:

  • Put the smallest one first (Little Endian)
  • Put the biggest one first (Big Endian)

Let's try an example. Suppose we wanted to save the hexadecimal value 0x90AB12CD. We first have to split it into bits of 0x90, 0xAB, 0x12, and 0xCD. We now can either store them with the biggest value first (Big Endian), 0x90 - 0xAB - 0x12 - 0xCD, or we could write the smallest number first (Little Endian), 0xCD - 0x12 - 0xAB - 0x90.

As you can see, it's the exact same set of values, but flipped. If this short explanation left you confused, I advise you to look at this excellent explanation by the University of Maryland's Department of Computer Science:

There is no better endianness. Both are used...