Refactoring C++ Code: Improving Architecture and Performance

The book "Refactoring C++ Code" is a practical guide for developers who want to learn how to systematically improve existing C++ code. Unlike abstract theories, the author offers specific techniques and step-by-step scenarios that will help turn tangled, poorly maintainable code into a clean, efficient, and scalable system.

The book is aimed at experienced C++ developers (middle and senior level) who are already familiar with the language syntax but want to deepen their knowledge in architecture and refactoring. It will be useful both for those working with legacy code and for those striving to write higher quality code from the start.

What you will learn from the book:

• Fundamentals of refactoring: when and why to perform it, how to avoid common mistakes, and how to integrate refactoring into the workflow without missing deadlines.
• Working with legacy code: techniques for safely modifying code without tests, extracting logic, adding unit tests, and gradually improving architecture.
• Refactoring patterns for C++: replacing inheritance with composition, extracting interfaces, eliminating duplication, improving memory management and RAII.
• Performance optimization: refactoring with performance in mind — how to improve speed without sacrificing readability and maintainability.
• Anti-patterns and code smells: how to recognize problematic areas in code: god classes, long functions, tight coupling, misuse of smart pointers.
• Tools and practices: using static analyzers, profilers, and version control systems for safe refactoring.

Each chapter contains real code examples before and after refactoring, as well as practical exercises to reinforce the material. The author pays special attention to change safety: how to minimize risks, how to write tests for existing code, and how to gradually introduce improvements.

The book is written in a lively, understandable language, without excessive academicism. All examples are relevant to modern C++ standards (C++17/20) and can be immediately applied in practice. This is not just a collection of tips, but a full-fledged methodology that will help you systematically approach improving your codebase.

"Refactoring C++ Code" will become a desk reference for every C++ developer striving for professional growth and creating high-quality software.