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Modern C++ Programming Cookbook

Modern C++ Programming Cookbook

By : Marius Bancila
4 (7)
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Modern C++ Programming Cookbook

Modern C++ Programming Cookbook

4 (7)
By: Marius Bancila

Overview of this book

C++ is one of the most widely used programming languages. Fast, efficient, and flexible, it is used to solve many problems. The latest versions of C++ have seen programmers change the way they code, giving up on the old-fashioned C-style programming and adopting modern C++ instead. Beginning with the modern language features, each recipe addresses a specific problem, with a discussion that explains the solution and offers insight into how it works. You will learn major concepts about the core programming language as well as common tasks faced while building a wide variety of software. You will learn about concepts such as concurrency, performance, meta-programming, lambda expressions, regular expressions, testing, and many more in the form of recipes. These recipes will ensure you can make your applications robust and fast. By the end of the book, you will understand the newer aspects of C++11/14/17 and will be able to overcome tasks that are time-consuming or would break your stride while developing.
Table of Contents (13 chapters)
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Providing metadata to the compiler with attributes


C++ has been very deficient when it comes to features that enable reflection or introspection on types or data or standard mechanisms to define language extensions. Because of that, compilers have defined their own specific extensions for this purpose. Examples include the VC++ __declspec() specifier or the GCC __attribute__((...)). C++11, however, introduces the concept of attributes that enable compilers to implement extensions in a standard way or even embedded domain-specific languages. The new C++ standards define several attributes all compilers should implement, and that will be the topic of this recipe.

How to do it...

Use standard attributes to provide hints for the compiler about various design goals:

  • To ensure that the return value from a function cannot be ignored, declare the function with the [[nodiscard]] attribute:
        [[nodiscard]] int get_value1() 
        { 
          return 42; 
        } 

        get_value1();
    ...
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