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)
13
Bibliography
14
Other Books You May Enjoy
15
Index

Reading and writing raw data from/to binary files

Some of the data programs you work with must be persisted to disk files in various ways, including storing data in a database or to flat files, either as text or binary data. This recipe, and the next one, are focused on persisting and loading both raw data and objects from and to binary files. In this context, raw data means unstructured data, and, in this recipe, we will consider writing and reading the content of a buffer (that is, a contiguous sequence of memory) that can either be an array, an std::vector, or an std::array.

Getting ready

For this recipe, you should be familiar with the standard stream I/O library, although some explanations, to the extent that is required to understand this recipe, are provided next. You should also be familiar with the differences between binary and text files.

In this recipe, we will use the ofstream and ifstream classes, which are available in the namespace std in...