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Hands-On Design Patterns with C++

You're reading from   Hands-On Design Patterns with C++ Solve common C++ problems with modern design patterns and build robust applications

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Product type Paperback
Published in Jul 2023
Publisher Packt
ISBN-13 9781804611555
Length 626 pages
Edition 2nd Edition
Languages
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Author (1):
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Fedor G. Pikus Fedor G. Pikus
Author Profile Icon Fedor G. Pikus
Fedor G. Pikus
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Table of Contents (26) Chapters Close

Preface 1. Part 1: Getting Started with C++ Features and Concepts
2. Chapter 1: An Introduction to Inheritance and Polymorphism FREE CHAPTER 3. Chapter 2: Class and Function Templates 4. Chapter 3: Memory and Ownership 5. Part 2: Common C++ Idioms
6. Chapter 4: Swap – from Simple to Subtle 7. Chapter 5: A Comprehensive Look at RAII 8. Chapter 6: Understanding Type Erasure 9. Chapter 7: SFINAE, Concepts, and Overload Resolution Management 10. Part 3: C++ Design Patterns
11. Chapter 8: The Curiously Recurring Template Pattern 12. Chapter 9: Named Arguments, Method Chaining, and the Builder Pattern 13. Chapter 10: Local Buffer Optimization 14. Chapter 11: ScopeGuard 15. Chapter 12: Friend Factory 16. Chapter 13: Virtual Constructors and Factories 17. Chapter 14: The Template Method Pattern and the Non-Virtual Idiom 18. Part 4: Advanced C++ Design Patterns
19. Chapter 15: Policy-Based Design 20. Chapter 16: Adapters and Decorators 21. Chapter 17: The Visitor Pattern and Multiple Dispatch 22. Chapter 18: Patterns for Concurrency 23. Assessments 24. Index 25. Other Books You May Enjoy

SFINAE, Concepts, and Overload Resolution Management

The idiom we study in this chapter, Substitution Failure Is Not An Error (SFINAE), is one of the more complex in terms of the language features it uses. Thus, it tends to get inordinate amounts of attention from C++ programmers. There is something in this feature that appeals to the mindset of a typical C++ programmer - a normal person thinks that, if it isn’t broken, don’t mess with it. A programmer, especially one writing in C++, tends to think that, if it isn’t broken, you’re not using it to its full potential. Let’s just say that SFINAE has a lot of potential.

We will cover the following topics in this chapter:

  • What are function overloading and overload resolution? What are type deduction and substitution?
  • What is SFINAE, and why was it necessary in C++?
  • How can SFINAE be used to write insanely complex, and sometimes useful, programs?
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