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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Conditionally compiling your source code

Conditional compilation is a simple mechanism that enables developers to maintain a single code base, but only consider some parts of the code for compilation to produce different executables, usually in order to run on different platforms or hardware, or depend on different libraries or library versions. Common examples include using or ignoring code based on the compiler, platform (x86, x64, ARM, and so on), configuration (debug or release), or any user-defined specific conditions. In this recipe, we'll take a look at how conditional compilation works.

Getting ready

Conditional compilation is a technique used extensively for many purposes. In this recipe, we will look at several examples and explain how they work. This technique is not in any way limited to these examples. For the scope of this recipe, we will only consider the three major compilers: GCC, Clang, and VC++.

How to do it...

To conditionally compile...