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)

Build a zip iterator adapter

Many scripting languages include a function for zipping two sequences together. A typical zip operation will take two input sequences and return a pair of values for each position in both inputs:

Consider the case of two sequences – they can be containers, iterators, or initialization lists:

Figure 4.6 – Containers to be zipped

We want to zip them together to make a new sequence with pairs of elements from the first two sequences:

Figure 4.7 – Zip operation

In this recipe we will accomplish this task with an iterator adapter.

How to do it…

In this recipe we'll build a zip iterator adapter that takes two containers of the same type and zips the values into std::pair objects:

  • In our main() function we want to call our adapter with two vectors:
    int main()
        vector<std::string> vec_a {"Bob", "John", "Joni...