Book Image

Boost C++ Application Development Cookbook - Second Edition

By : Anton Polukhin Alekseevic
Book Image

Boost C++ Application Development Cookbook - Second Edition

By: Anton Polukhin Alekseevic

Overview of this book

If you want to take advantage of the real power of Boost and C++ and avoid the confusion about which library to use in which situation, then this book is for you. Beginning with the basics of Boost C++, you will move on to learn how the Boost libraries simplify application development. You will learn to convert data such as string to numbers, numbers to string, numbers to numbers and more. Managing resources will become a piece of cake. You’ll see what kind of work can be done at compile time and what Boost containers can do. You will learn everything for the development of high quality fast and portable applications. Write a program once and then you can use it on Linux, Windows, MacOS, Android operating systems. From manipulating images to graphs, directories, timers, files, networking – everyone will find an interesting topic. Be sure that knowledge from this book won’t get outdated, as more and more Boost libraries become part of the C++ Standard.
Table of Contents (19 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Converting all the tuple elements to strings


This recipe and the next one are devoted to a mix of compile time and runtime features. We'll be using the Boost.Fusion library and see what it can do.

Remember that we were talking about tuples and arrays in the first chapter? Now, we want to write a single function that can stream elements of tuples and arrays to strings.

Getting ready

You should be aware of the boost::tuple and boost::array classes and of the boost::lexical_cast function.

How to do it...

We already know almost all the functions and classes that will be used in this recipe. We just need to gather all of them together:

  1. We need to write a functor that converts any type to string:
#include <boost/lexical_cast.hpp>
#include <boost/noncopyable.hpp>

struct stringize_functor: boost::noncopyable {
private:
    std::string& result;

public:
    explicit stringize_functor(std::string& res)
        : result(res)
    {}

    template <class T>
    void operator()(const...