Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying C++ High Performance
  • Table Of Contents Toc
  • Feedback & Rating feedback
C++ High Performance

C++ High Performance

By : Björn Andrist, Sehr
4.4 (24)
close
close
C++ High Performance

C++ High Performance

4.4 (24)
By: Björn Andrist, 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)
close
close
15
Other Books You May Enjoy
16
Index

Representing optional values with std::optional

Although quite a minor feature from C++17, std::optional is a nice addition to the standard library. It simplifies a common case that couldn't be expressed in a clean and straightforward way prior to std::optional. In a nutshell, it is a small wrapper for any type where the wrapped type can be either initialized or uninitialized.

To put it in C++ lingo, std::optional is a stack-allocated container with a max size of one.

Optional return values

Before the introduction of std::optional, there was no clear way to define functions that may not return a defined value, such as the intersection point of two line segments. With the introduction of std::optional, such optional return values can be clearly expressed. What follows is an implementation of a function that returns an optional intersection between two lines:

// Prerequisite
struct Point { /* ......

Unlock full access

Continue reading for free

A Packt free trial gives you instant online access to our library of over 7000 practical eBooks and videos, constantly updated with the latest in tech

Create a Note

Modal Close icon
You need to login to use this feature.
notes
bookmark search playlist download font-size

Change the font size

margin-width

Change margin width

day-mode

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Delete Bookmark

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Delete Note

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Edit Note

Modal Close icon
Write a note (max 255 characters)
Cancel
Update Note

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY