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

Using bitset for fixed-size sequences of bits


It is not uncommon for developers to operate with bit flags; this can be either because they work with operating system APIs, usually written in C, that take various types of arguments (such as options or styles) in the form of bit flags, or because they work with libraries that do similar things, or simply because some types of problems are naturally solved with bit flags. One can think of alternatives to working with bits and bit operations, such as defining arrays having one element for every option/flag, or defining a structure with members and functions to model the bit flags, but these are often more complicated, and in case you need to pass a numerical value representing bit flags to a function you still need to convert the array or the structure to a sequence of bits. For this reason, the C++ standard provides a container called std::bitset for fixed-size sequences of bits.

Getting ready

For this recipe, you must be familiar with bitwise...