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)

String formatting

String formatting has traditionally been a weak point with the STL. Until recently, we've been left with an imperfect choice between the cumbersome STL iostreams or the archaic legacy printf(). Beginning with C++20 and the format library, STL string formatting has finally grown up. Closely based on Python's str.format() method, the new format library is fast and flexible, providing many of the advantages of both iostreams and printf(), along with good memory management and type safety.

For more about the format library, see the Format text with the new format library recipe in Chaper 1, New C++20 Features.

While we no longer need to use iostreams for string formatting, it is still quite useful for other purposes, including file and stream I/O, and some type conversions.

In this chapter, we will cover these subjects and more in the following recipes:

  • Use string_view as a lightweight string object
  • Concatenate strings
  • Transform strings...