Book Image

Modern C++: Efficient and Scalable Application Development

By : Richard Grimes, Marius Bancila
Book Image

Modern C++: Efficient and Scalable Application Development

By: Richard Grimes, Marius Bancila

Overview of this book

C++ is one of the most widely used programming languages. It is fast, flexible, and used to solve many programming problems. This Learning Path gives you an in-depth and hands-on experience of working with C++, using the latest recipes and understanding most recent developments. You will explore C++ programming constructs by learning about language structures, functions, and classes, which will help you identify the execution flow through code. You will also understand the importance of the C++ standard library as well as memory allocation for writing better and faster programs. Modern C++: Efficient and Scalable Application Development deals with the challenges faced with advanced C++ programming. You will work through advanced topics such as multithreading, networking, concurrency, lambda expressions, and many more recipes. By the end of this Learning Path, you will have all the skills to become a master C++ programmer. This Learning Path includes content from the following Packt products: • Beginning C++ Programming by Richard Grimes • Modern C++ Programming Cookbook by Marius Bancila • The Modern C++ Challenge by Marius Bancila
Table of Contents (24 chapters)
Title Page
About Packt
Math Problems
Language Features
Strings and Regular Expressions
Streams and Filesystems
Date and Time
Algorithms and Data Structures


Here are the solutions for the above problem-solving sections.

23. Binary to string conversion

In order to write a general-purpose function that can handle various sorts of ranges, such as an std::array, std::vector, a C-like array, or others, we should write a function template. In the following, there are two overloads; one that takes a container as an argument and a flag indicating the casing style, and one that takes a pair of iterators (to mark the first and then one past the end element of the range) and the flag to indicate casing. The content of the range is written to an std::ostringstream object, with the appropriate I/O manipulators, such as width, filling character, or case flag:

template <typename Iter>
std::string bytes_to_hexstr(Iter begin, Iter end, 
                            bool const uppercase = false)
   std::ostringstream oss;
   if(uppercase) oss.setf(std::ios_base::uppercase);
   for (; begin != end; ++begin)
     oss << std::hex << std...