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C++ High Performance

You're reading from   C++ High Performance Master the art of optimizing the functioning of your C++ code

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Product type Paperback
Published in Dec 2020
Publisher Packt
ISBN-13 9781839216541
Length 544 pages
Edition 2nd Edition
Languages
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Authors (2):
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Viktor Sehr Viktor Sehr
Author Profile Icon Viktor Sehr
Viktor Sehr
Björn Andrist Björn Andrist
Author Profile Icon Björn Andrist
Björn Andrist
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Table of Contents (17) Chapters Close

Preface 1. A Brief Introduction to C++ 2. Essential C++ Techniques FREE CHAPTER 3. Analyzing and Measuring Performance 4. Data Structures 5. Algorithms 6. Ranges and Views 7. Memory Management 8. Compile-Time Programming 9. Essential Utilities 10. Proxy Objects and Lazy Evaluation 11. Concurrency 12. Coroutines and Lazy Generators 13. Asynchronous Programming with Coroutines 14. Parallel Algorithms 15. Other Books You May Enjoy
16. Index

Constraints and concepts

So far, we have covered quite a few important techniques for writing C++ metaprograms. You have seen how templates can generate concrete classes and functions for us with excellent support from the type traits library. Furthermore, you have seen how the use of constexpr, consteval, and if constexpr can help us move computations from runtime to compile time. In that way, we can detect programming errors at compile time and write programs with lower runtime costs. This is great, but there is still plenty of room for improvement when it comes to writing and consuming generic code in C++. Some of the issues that we haven't addressed yet include:

  1. Interfaces are too generic. When using a template with some arbitrary type, it's hard to know what the requirements of that type are. This makes the templates hard to use if we only inspect the template interface. Instead, we have to rely on documentation or dig deep into the implementation of a template...
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