Book Image

C++17 STL Cookbook

By : Jacek Galowicz
Book Image

C++17 STL Cookbook

By: Jacek Galowicz

Overview of this book

C++ has come a long way and is in use in every area of the industry. Fast, efficient, and flexible, it is used to solve many problems. The upcoming version of C++ will see programmers change the way they code. If you want to grasp the practical usefulness of the C++17 STL in order to write smarter, fully portable code, then this book is for you. Beginning with new language features, this book will help you understand the language’s mechanics and library features, and offers insight into how they work. Unlike other books, ours takes an implementation-specific, problem-solution approach that will help you quickly overcome hurdles. You will learn the core STL concepts, such as containers, algorithms, utility classes, lambda expressions, iterators, and more, while working on practical real-world recipes. These recipes will help you get the most from the STL and show you how to program in a better way. By the end of the book, you will be up to date with the latest C++17 features and save time and effort while solving tasks elegantly using the STL.
Table of Contents (18 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
Index

Chapter 2. STL Containers

We will cover the following recipes in this chapter:

  • Using the erase-remove idiom on std::vector
  • Deleting items from an unsorted std::vector in O(1) time
  • Accessing std::vector instances the fast or the safe way
  • Keeping std::vector instances sorted
  • Inserting items efficiently and conditionally into std::map
  • Knowing the new insertion hint semantics of std::map::insert
  • Efficiently modifying the keys of std::map items
  • Using std::unordered_map with custom types
  • Filtering duplicates from user input and printing them in alphabetical order with std::set
  • Implementing a simple RPN calculator with std::stack
  • Implementing a word frequency counter with std::map
  • Implementing a writing style helper tool for finding very long sentences in texts with std::set
  • Implementing a personal to-do list using std::priority_queue