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)
13
Bibliography
14
Other Books You May Enjoy
15
Index

Using type traits to query properties of types

Template metaprogramming is a powerful feature of the language that enables us to write and reuse generic code that works with all types. In practice, however, it is often necessary that generic code should work differently, or not at all, with different types, either through intent, or for semantic correctness, performance, or other reasons. For example, you may want a generic algorithm to be implemented differently for POD and non-POD types, or you want a function template to be instantiated only with integral types. C++11 provides a set of type traits to help with this.

Type traits are basically meta-types that provide information about other types. The type traits library contains a long list of traits for querying type properties (such as checking whether a type is an integral type or whether two types are the same), but also for performing type transformation (such as removing the const and volatile qualifiers or adding...