Book Image

Mastering the C++17 STL

By : Arthur O'Dwyer
Book Image

Mastering the C++17 STL

By: Arthur O'Dwyer

Overview of this book

Modern C++ has come a long way since 2011. The latest update, C++17, has just been ratified and several implementations are on the way. This book is your guide to the C++ standard library, including the very latest C++17 features. The book starts by exploring the C++ Standard Template Library in depth. You will learn the key differences between classical polymorphism and generic programming, the foundation of the STL. You will also learn how to use the various algorithms and containers in the STL to suit your programming needs. The next module delves into the tools of modern C++. Here you will learn about algebraic types such as std::optional, vocabulary types such as std::function, smart pointers, and synchronization primitives such as std::atomic and std::mutex. In the final module, you will learn about C++'s support for regular expressions and file I/O. By the end of the book you will be proficient in using the C++17 standard library to implement real programs, and you'll have gained a solid understanding of the library's own internals.
Table of Contents (13 chapters)

Putting it all together

Putting together everything we've learned in this chapter, we can now write code like the following example. In this example, we're implementing our own list_of_ints with our own iterator class (including a const-correct const_iterator version); and we're enabling it to work with the standard library by providing the five all-important member typedefs.

    struct list_node {
int data;
list_node *next;
};

template<bool Const>
class list_of_ints_iterator {
friend class list_of_ints;
friend class list_of_ints_iterator<!Const>;

using node_pointer = std::conditional_t<Const, const list_node*,
list_node*>;
node_pointer ptr_;

explicit list_of_ints_iterator(node_pointer p) : ptr_(p) {}
public:
// Member typedefs required by std::iterator_traits
using difference_type...