Book Image

C++ High Performance - Second Edition

By : Björn Andrist, Viktor Sehr
5 (2)
Book Image

C++ High Performance - Second Edition

5 (2)
By: Björn Andrist, Viktor Sehr

Overview of this book

C++ High Performance, Second Edition guides you through optimizing the performance of your C++ apps. This allows them to run faster and consume fewer resources on the device they're running on without compromising the readability of your codebase. The book begins by introducing the C++ language and some of its modern concepts in brief. Once you are familiar with the fundamentals, you will be ready to measure, identify, and eradicate bottlenecks in your C++ codebase. By following this process, you will gradually improve your style of writing code. The book then explores data structure optimization, memory management, and how it can be used efficiently concerning CPU caches. After laying the foundation, the book trains you to leverage algorithms, ranges, and containers from the standard library to achieve faster execution, write readable code, and use customized iterators. It provides hands-on examples of C++ metaprogramming, coroutines, reflection to reduce boilerplate code, proxy objects to perform optimizations under the hood, concurrent programming, and lock-free data structures. The book concludes with an overview of parallel algorithms. By the end of this book, you will have the ability to use every tool as needed to boost the efficiency of your C++ projects.
Table of Contents (17 chapters)
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Creative operator overloading and proxy objects

As you might already know, C++ has the ability to overload several operators, including the standard math operators such as plus and minus. Overloaded math operators can be utilized to create custom math classes that behave as numeric built-in types to make the code more readable. Another example is the stream operator, which in the standard library is overloaded in order to convert the objects to streams, as shown here:

std::cout << "iostream " << "uses " << "overloaded " << "operators.";

Some libraries, however, use overloading in other contexts. The Ranges library, as discussed earlier, uses overloading to compose views like this:

const auto r = {-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5};
auto odd_positive_numbers = r 
  | std::views::filter([](auto v) { return v > 0; }) 
  | std::views::filter([](auto v) { return (v % 2) == 1; });

Next, we will explore...