Book Image

C++20 STL Cookbook

By : Bill Weinman
Book Image

C++20 STL Cookbook

By: Bill Weinman

Overview of this book

Fast, efficient, and flexible, the C++ programming language has come a long way and is used in every area of the industry to solve many problems. The latest version C++20 will see programmers change the way they code as it brings a whole array of features enabling the quick deployment of applications. This book will get you up and running with using the STL in the best way possible. Beginning with new language features in C++20, this book will help you understand the language's mechanics and library features and offer insights into how they work. Unlike other books, the C++20 STL Cookbook takes an implementation-specific, problem-solution approach that will help you overcome hurdles quickly. You'll learn core STL concepts, such as containers, algorithms, utility classes, lambda expressions, iterators, and more, while working on real-world recipes. This book is a reference guide for using the C++ STL with its latest capabilities and exploring the cutting-edge features in functional programming and lambda expressions. By the end of the book C++20 book, you'll be able to leverage the latest C++ features and save time and effort while solving tasks elegantly using the STL.
Table of Contents (13 chapters)

Time events with std::chrono

The std::chrono library provides tools for measuring and reporting time and intervals.

Many of these classes and functions were introduced with C++11. There have been significant changes and updates for C++20, but at the time of writing, many of those updates are not yet implemented on the systems I've tested.

Using the chrono library, this recipe explores techniques for timing events.

How to do it…

The system_clock class is used for reporting the current date and time. The steady_clock and high_resolution_clock classes are used for timing events. Let's look at the differences between these clocks:

  • Because these names can be long and unwieldy, we'll use some type aliases throughout this recipe:
    using std::chrono::system_clock;
    using std::chrono::steady_clock;
    using std::chrono::high_resolution_clock;
    using std::chrono::duration;
    using seconds = duration<double>;
    using milliseconds = duration<double, std...