You're reading from Practical System Programming for Rust Developers Build fast and secure software for Linux/Unix systems with the help of practical examples

Product type Paperback

Published in Dec 2020

Publisher Packt

ISBN-13 9781800560963

Length 388 pages

Edition 1st Edition

Languages

Rust

Tools

GitHub

Concepts

System Programming

Author (1):

Prabhu Eshwarla

View More author details

Table of Contents (17) Chapters

Preface

1. Section 1: Getting Started with System Programming in Rust

2. Chapter 1: Tools of the Trade – Rust Toolchains and Project Structures FREE CHAPTER

3. Chapter 2: A Tour of the Rust Programming Language

4. Chapter 3: Introduction to the Rust Standard Library

5. Chapter 4: Managing Environment, Command Line, and Time

6. Section 2: Managing and Controlling System Resources in Rust

7. Chapter 5: Memory Management in Rust

8. Chapter 6: Working with Files and Directories in Rust

9. Chapter 7: Implementing Terminal I/O in Rust

10. Chapter 8: Working with Processes and Signals

11. Chapter 9: Managing Concurrency

12. Section 3: Advanced Topics

13. Chapter 10: Working with Device I/O

14. Chapter 11: Learning Network Programming

15. Chapter 12: Writing Unsafe Rust and FFI

16. Other Books You May Enjoy

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Analyzing the problem domain

In this section, we will define the scope of the project and the technical challenges that we need to address.

Understanding and analyzing the problem domain is the first step in building any system. It is important to unambiguously articulate the problem we are trying to solve, and the boundaries of the system. These can be captured in the form of system requirements.

Let's look at the requirements for the CLI tool we are going to build.

The tool should accept an arithmetic expression as input, evaluate it, and provide the numerical output as a floating-point number. For example, the expression 1+2*3.2+(4/2-3/2)-2.11+2^4 should evaluate to 21.79.

The arithmetic operations in scope are addition (+), subtraction (-), multiplication (*), division (/), power (^), the negative prefix (-), and expressions enclosed in parentheses ().