Book Image

C++20 STL Cookbook

By : Bill Weinman
Book Image

C++20 STL Cookbook

By: Bill Weinman

Overview of this book

Fast, efficient, and flexible, the C++ programming language has come a long way and is used in every area of the industry to solve many problems. The latest version C++20 will see programmers change the way they code as it brings a whole array of features enabling the quick deployment of applications. This book will get you up and running with using the STL in the best way possible. Beginning with new language features in C++20, this book will help you understand the language's mechanics and library features and offer insights into how they work. Unlike other books, the C++20 STL Cookbook takes an implementation-specific, problem-solution approach that will help you overcome hurdles quickly. You'll learn core STL concepts, such as containers, algorithms, utility classes, lambda expressions, iterators, and more, while working on real-world recipes. This book is a reference guide for using the C++ STL with its latest capabilities and exploring the cutting-edge features in functional programming and lambda expressions. By the end of the book C++20 book, you'll be able to leverage the latest C++ features and save time and effort while solving tasks elegantly using the STL.
Table of Contents (13 chapters)

Chapter 7: Strings, Streams, and Formatting

The STL string class is a powerful, full-featured tool for storing, manipulating, and displaying character-based data. It has much of the convenience you would find in a high-level scripting language, yet remains as quick and agile as you would expect from C++.

The string class is based on basic_string, a contiguous container class that may be instantiated with any character type. Its class signature looks like this:

template<
    typename CharT,
    typename Traits = std::char_traits<CharT>,
    typename Allocator = std::allocator<CharT>
> class basic_string;

The Traits and Allocator template parameters are usually left to their default values.

The underlying storage of basic_string is a contiguous sequence of CharT, and can be accessed with the data() member function:

const std::basic_string<char> s{"hello...