Book Image

Modern C++ Programming Cookbook

By : Marius Bancila
Book Image

Modern C++ Programming Cookbook

By: Marius Bancila

Overview of this book

C++ is one of the most widely used programming languages. Fast, efficient, and flexible, it is used to solve many problems. The latest versions of C++ have seen programmers change the way they code, giving up on the old-fashioned C-style programming and adopting modern C++ instead. Beginning with the modern language features, each recipe addresses a specific problem, with a discussion that explains the solution and offers insight into how it works. You will learn major concepts about the core programming language as well as common tasks faced while building a wide variety of software. You will learn about concepts such as concurrency, performance, meta-programming, lambda expressions, regular expressions, testing, and many more in the form of recipes. These recipes will ensure you can make your applications robust and fast. By the end of the book, you will understand the newer aspects of C++11/14/17 and will be able to overcome tasks that are time-consuming or would break your stride while developing.
Table of Contents (19 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Implementing parallel map and fold with threads


In the Chapter 3, Exploring Functions, we discussed two higher-order functions: map, which applies a function to the elements of a range by either transforming the range or producing a new range, and fold, which combines the elements of a range into a single value. The various implementations we did were sequential. However, in the context of concurrency, threads, and asynchronous tasks, we can leverage the hardware and run parallel versions of these functions to speed up their execution for large ranges or when the transformation and aggregation are time-consuming. In this recipe, we will see a possible solution for implementing map and fold using threads.

Getting ready

You need to be familiar with the concept of the map and fold functions. It is recommended that you read the Implementing higher-order functions map and fold recipe from the Chapter 3, Exploring Functions. In this recipe, we will use the various thread functionalities presented...