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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
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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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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

Advancing from abstract ranges to the ranges library

We have used the term range many times in the previous chapter. A range is an abstraction of a sequence of elements, delimited by two iterators (one to the first element of the sequence, and one to the one-past-the-last element). Containers such as std::vector, std::list, and std::map are concrete implementations of the range abstraction. They have ownership of the elements and they are implemented using various data structures, such as arrays, linked-lists, or trees. The standard algorithms are generic. They are container-agnostic. They know nothing about std::vector, std::list, or std::map. They handle range abstractions with the help of iterators. However, this has a shortcoming: we always need to retrieve a beginning and end iterator from a container. Here are some examples:

// sorts a vector
std::vector<int> v{ 1, 5, 3, 2, 4 };
std::sort(v.begin(), v.end());
// counts even numbers in an array
std::array<int, 5&gt...
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