Book Image

Modern C++ Programming Cookbook - Third Edition

By : Marius Bancila
Book Image

Modern C++ Programming Cookbook - Third Edition

By: Marius Bancila

Overview of this book

The updated third edition of Modern C++ Programming Cookbook addresses the latest features of C++23, such as the stack library, the expected and mdspan types, span buffers, formatting library improvements, and updates to the ranges library. It also gets into more C++20 topics not previously covered, such as sync output streams and source_location. The book is organized in the form of practical recipes covering a wide range of real-world problems. It gets into the details of all the core concepts of 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. You will cover the performance aspects of programming in depth, and learning to write fast and lean code with the help of best practices. You will explore useful patterns and the implementation of many idioms, including pimpl, named parameter, attorney-client, and the factory pattern. A chapter dedicated to unit testing introduces you to three of the most widely used libraries for C++: Boost.Test, Google Test, and Catch2. By the end of this modern C++ programming book, you will be able to effectively leverage the features and techniques of C++11/14/17/20/23 programming to enhance the performance, scalability, and efficiency of your applications.
Table of Contents (15 chapters)
13
Other Books You May Enjoy
14
Index

Learning Modern Core Language Features

The C++ language has gone through a major transformation in the past decades with the development and release of C++11 and then, later, with its newer versions: C++14, C++17, C++20, and C++23. These new standards have introduced new concepts, simplified and extended existing syntax and semantics, and transformed the way we write code overall. C++11 looks and feels like a new language compared to what we previously knew, and code written using these new standards is called modern C++ code. This introductory chapter will touch on some of the language features introduced, starting with C++11, that help you with many coding routines. However, the core of the language expands way beyond the topics addressed in this chapter, and many other features are discussed in the other chapters of the book.

The recipes included in this chapter are as follows:

  • Using auto whenever possible
  • Creating type aliases and alias templates
  • Understanding uniform initialization
  • Understanding the various forms of non-static member initialization
  • Controlling and querying object alignment
  • Using scoped enumerations
  • Using override and final for virtual methods
  • Using range-based for loops to iterate on a range
  • Enabling range-based for loops for custom types
  • Using explicit constructors and conversion operators to avoid implicit conversion
  • Using unnamed namespaces instead of static globals
  • Using inline namespaces for symbol versioning
  • Using structured bindings to handle multi-return values
  • Simplifying code with class template argument deduction
  • Using the subscript operator to access elements in a collection

Let’s start by learning about automatic type deduction.