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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 (19 chapters)
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Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Using noexcept for functions that do not throw


Exception specification is a language feature that can enable performance improvements, but on the other hand, when done incorrectly, it can abnormally terminate the program. The exception specification from C++03 which allowed you to indicate what types of exceptions a function could throw has been deprecated and replaced with the new C++11 noexcept specification. This specification only allows you to indicate whether a function may throw or not. This recipe provides information about the modern exception specifications in C++, as well as guidelines on when to use it.

How to do it...

Use the following constructs to specify or query exception specifications:

  • Use nothrow in a function declaration to indicate that the function is not throwing any exception:
        void func_no_throw() noexcept
        {
        }
  • Use nothrow(expr) in a function declaration, such as template metaprogramming, to indicate that the function may or may not throw an exception...

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