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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Finding elements in a range

One of the most common operations we do in any application is searching through data. Therefore, it is not surprising that the standard library provides many generic algorithms for searching through standard containers, or anything that can represent a range and is defined by a start and a past-the-end iterator. In this recipe, we will see what these standard algorithms are and how they can be used.

Getting ready

For all the examples in this recipe, we will use std::vector, but all the algorithms work with ranges defined by a begin and past-the-end, either input or forward iterators, depending on the algorithm (for more information about the various types of iterators, see the Writing your own random access iterator recipe, later in this chapter). All these algorithms are available in the std namespace in the <algorithm> header.

How to do it...

The following is a list of algorithms that can be used for finding elements in a range: