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)

Deleting from a sorted array with std::remove_if

In all our discussion of standard generic algorithms up to this point, we haven't covered the question of how to remove items from a range. This is because the concept of "a range" is fundamentally read-only: we might change the values of the elements of a given range, but we can never use a standard algorithm to shorten or lengthen the range itself. When, in the Shunting data with std::copy section, we used std::copy to "insert into" a vector named dest, it wasn't the std::copy algorithm that was doing the inserting; it was the std::back_insert_iterator object itself that held a reference to the underlying container and was able to insert into the container. std::copy didn't take dest.begin() and dest.end() as parameters; instead it took the special object std::back_inserter(dest).

So how do we...