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

Performing compile-time assertion checks with static_assert

In C++, it is possible to perform both runtime and compile-time assertion checks to ensure that specific conditions in your code are true. Runtime assertions have the disadvantage that they are verified late when the program is running, and only if the control flow reaches them. There is no alternative when the condition depends on runtime data; however, when that is not the case, compile-time assertion checks are to be preferred. With compile-time assertions, the compiler is able to notify you early in the development stage with an error that a particular condition has not been met. These, however, can only be used when the condition can be evaluated at compile time. In C++11, compile-time assertions are performed with static_assert.

Getting ready

The most common use of static assertion checks is with template metaprogramming, where they can be used for validating that preconditions on template types are met (examples...