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Learning Scala Programming

You're reading from   Learning Scala Programming Object-oriented programming meets functional reactive to create Scalable and Concurrent programs

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Product type Paperback
Published in Jan 2018
Publisher Packt
ISBN-13 9781788392822
Length 426 pages
Edition 1st Edition
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Author (1):
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Vikash Sharma Vikash Sharma
Author Profile Icon Vikash Sharma
Vikash Sharma
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Table of Contents (16) Chapters Close

1. Getting Started with Scala Programming FREE CHAPTER 2. Building Blocks of Scala 3. Shaping our Scala Program 4. Giving Meaning to Programs with Functions 5. Getting Familiar with Scala Collections 6. Object-Oriented Scala Basics 7. Next Steps in Object-Oriented Scala 8. More on Functions 9. Using Powerful Functional Constructs 10. Advanced Functional Programming 11. Working with Implicits and Exceptions 12. Introduction to Akka 13. Concurrent Programming in Scala 14. Programming with Reactive Extensions 15. Testing in Scala 16. Other Books You May Enjoy

Parallel collections

Well, before discussing parallel collections in Scala, it's important to have some insight about what parallel computation is. How's it different from concurrent and asynchronous?

Well, we have spent some time understanding that asynchronous computation is non-blocking, hence we know that async computation happens from outside of the main program flow and gives you the value once the computation gets completed. To understand the difference between concurrent and parallel computation, let's look at the following example:

In the example, we are given a collection of numbers where we want to apply a function to each element of the collection to get a new collection. One method is to take a value out from the starting collection, add one to it, and put that value in a new collection, until the first collection is empty. Now, this process...

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