Book Image

Modern C++ Programming Cookbook - Second Edition

By : Marius Bancila
5 (1)
Book Image

Modern C++ Programming Cookbook - Second Edition

5 (1)
By: Marius Bancila

Overview of this book

C++ has come a long way to be one of the most widely used general-purpose languages that is fast, efficient, and high-performance at its core. The updated second edition of Modern C++ Programming Cookbook addresses the latest features of C++20, such as modules, concepts, coroutines, and the many additions to the standard library, including ranges and text formatting. The book is organized in the form of practical recipes covering a wide range of problems faced by modern developers. The book also delves into the details of all the core concepts in modern C++ programming, such as functions and classes, iterators and algorithms, streams and the file system, threading and concurrency, smart pointers and move semantics, and many others. It goes into the performance aspects of programming in depth, teaching developers how to write fast and lean code with the help of best practices. Furthermore, the book explores useful patterns and delves into the implementation of many idioms, including pimpl, named parameter, and attorney-client, teaching techniques such as avoiding repetition with the factory pattern. There is also a chapter dedicated to unit testing, where you are introduced to three of the most widely used libraries for C++: Boost.Test, Google Test, and Catch2. By the end of the book, you will be able to effectively leverage the features and techniques of C++11/14/17/20 programming to enhance the performance, scalability, and efficiency of your applications.
Table of Contents (16 chapters)
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Iterating over collections with the ranges library

The C++ Standard Library provides three important pillars—containers, iterators, and algorithms—that enable us to work with collections. Because these algorithms are for general purpose and are designed to work with iterators, which define a range, they often require writing explicit and sometimes complex code to achieve simple tasks. The C++20 ranges library has been designed to solve this problem by providing components for handling ranges of elements. These components include range adapters (or views) and constrained algorithms that work with a range instead of iterators. In this recipe, we will look at some of these views and algorithms and see how they can simplify coding.

Getting ready

In the following snippets, we will refer to a function called is_prime(), which takes an integer and returns a Boolean indicating whether the number is prime or not. A simple implementation is shown here:

bool is_prime...