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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Creating your own range view

The C++20 ranges library simplifies the handling of ranges of elements. The 16 range adaptors (views) defined in the library provide useful operations, as seen in the previous recipe. However, you can create your own view that can be used together with the standard ones. In this recipe, you will learn how to do that. We will create a view called trim that, given a range and a unary predicate, returns a new range without the front and back elements that satisfy the predicate.

Getting ready

In this recipe, we will use the same namespace aliases used in the previous one, with rg as an alias for std::ranges and rv as an alias for std::ranges::views.

How to do it...

To create a view, do the following:

  • Create a class template, called trim_view, derived from std::ranges::view_interface:
    template<rg::input_range R, typename P>
        requires rg::view<R>
    class trim_view :
        public rg::view_interface<trim_view&lt...