Book Image

Modern C++ Programming Cookbook

By : Marius Bancila
Book Image

Modern C++ Programming Cookbook

By: Marius Bancila

Overview of this book

C++ is one of the most widely used programming languages. Fast, efficient, and flexible, it is used to solve many problems. The latest versions of C++ have seen programmers change the way they code, giving up on the old-fashioned C-style programming and adopting modern C++ instead. Beginning with the modern language features, each recipe addresses a specific problem, with a discussion that explains the solution and offers insight into how it works. You will learn major concepts about the core programming language as well as common tasks faced while building a wide variety of software. You will learn about concepts such as concurrency, performance, meta-programming, lambda expressions, regular expressions, testing, and many more in the form of recipes. These recipes will ensure you can make your applications robust and fast. By the end of the book, you will understand the newer aspects of C++11/14/17 and will be able to overcome tasks that are time-consuming or would break your stride while developing.
Table of Contents (19 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Expressing time intervals with chrono::duration


Working with times and dates is a common operation regardless of the programming language. C++11 provides a flexible date and time library as part of the standard library that enables us to define time points and time intervals. This library, called chrono, is a general purpose utility library designed to work with a timer and clocks that can be different on different systems and, therefore, be precision-neutral. The library is available in the <chrono> header in the std::chrono namespace and defines and implements several components, as follows:

  • Durations that represent time intervals.
  • Time points that present a duration of time since the epoch of a clock.
  • Clocks that define an epoch (that is, start of time) and a tick.

In this recipe, we will see how to work with durations.

Getting ready

This recipe is not intended as a complete reference to the duration class. It is recommended that you consult additional resources for that purpose (the...