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Mastering Clojure

You're reading from   Mastering Clojure Understand the philosophy of the Clojure language and dive into its inner workings to unlock its advanced features, methodologies, and constructs

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Product type Paperback
Published in Mar 2016
Last Updated in Feb 2025
Publisher Packt
ISBN-13 9781785889745
Length 266 pages
Edition 1st Edition
Languages
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Author (1):
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 Wali Wali
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Wali
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Toc

Table of Contents (14) Chapters Close

Preface 1. Working with Sequences and Patterns FREE CHAPTER 2. Orchestrating Concurrency and Parallelism 3. Parallelization Using Reducers 4. Metaprogramming with Macros 5. Composing Transducers 6. Exploring Category Theory 7. Programming with Logic 8. Leveraging Asynchronous Tasks 9. Reactive Programming 10. Testing Your Code 11. Troubleshooting and Best Practices A. References
Index

Chapter 3. Parallelization Using Reducers

Reducers are another way of looking at collections in Clojure. In this chapter, we will study this particular abstraction of collections, and how it is quite orthogonal to viewing collections as sequences. The motivation behind reducers is to increase the performance of computations over collections. This performance gain is achieved mainly through parallelization of such computations.

As we have seen in Chapter 1, Working with Sequences and Patterns, sequences and laziness are a great way to handle collections. The Clojure standard library provides several functions to handle and manipulate sequences. However, abstracting a collection as a sequence has an unfortunate consequence; any computation performed over all the elements of a sequence is inherently sequential. Also, all of the standard sequence functions create a new collection that is similar to the collection passed to these functions. Interestingly, performing a computation over...

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