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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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Checking the properties of an existing file or directory


The filesystem library provides functions and types that enable developers to check for the existence of a filesystem object, such as a file or directory, its properties, such as the type (file, directory, symbolic link, and so on), the last write time, permissions, and others. In this recipe, we will look at what these types and functions are and how they can be used.

Getting ready

Before continuing with this recipe, you should read the Working with filesystem paths recipe.

For the following code samples, we will use the namespace alias fs for the std::filesystem namespace. The filesystem library is available in the header with the same name, <filesystem>. Also, we will use the variables shown here, path for the path of a file and err for receiving potential operating system error codes from the filesystem APIs:

    auto path = fs::current_path() / "main.cpp";
    auto err = std::error_code{};

How to do it...

Use the following library...

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Modern C++ Programming Cookbook
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