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Template Metaprogramming with C++

You're reading from   Template Metaprogramming with C++ Learn everything about C++ templates and unlock the power of template metaprogramming

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Product type Paperback
Published in Aug 2022
Publisher Packt
ISBN-13 9781803243450
Length 480 pages
Edition 1st Edition
Languages
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Author (1):
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Marius Bancila Marius Bancila
Author Profile Icon Marius Bancila
Marius Bancila
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Toc

Table of Contents (16) Chapters Close

Preface 1. Part 1: Core Template Concepts
2. Chapter 1: An Introduction to Templates FREE CHAPTER 3. Chapter 2: Template Fundamentals 4. Chapter 3: Variadic Templates 5. Part 2: Advanced Template Features
6. Chapter 4: Advanced Template Concepts 7. Chapter 5: Type Traits and Conditional Compilation 8. Chapter 6: Concepts and Constraints 9. Part 3: Applied Templates
10. Chapter 7: Patterns and Idioms 11. Chapter 8: Ranges and Algorithms 12. Chapter 9: The Ranges Library 13. Assignment Answers 14. Other Books You May Enjoy Appendix: Closing Notes

Chapter 2, Template Fundamentals

Question 1

What category of types can be used for non-type template parameters?

Answer

Non-type template parameters can only have structural types. Structure types are integral types, floating-point types (as of C++20), enumeration types, pointer types (either to objects or functions), pointer to member types (either to member objects or member functions), lvalue reference types (either to objects or functions), and literal class types that meet several requirements: all base classes are public and non-mutable, all non-static data members are public and non-mutable, and the types of all the base classes and the non-static data members are also structural types or arrays thereof. const and volatile qualified versions of these types are also allowed.

Question 2

Where are default template arguments not allowed?

Answer

Default template arguments cannot be used for parameter packs, in declarations of friend class templates, and in the...

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