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Hands-On Functional Programming in Rust

You're reading from Hands-On Functional Programming in Rust Build modular and reactive applications with functional programming techniques in Rust 2018

Product type Paperback

Published in May 2018

Publisher Packt

ISBN-13 9781788839358

Length 249 pages

Edition 1st Edition

Languages

Rust

Concepts

Functional Programming

Author (1):

Andrew Johnson

View More author details

Table of Contents (17) Chapters

Title Page

Copyright and Credits

Packt Upsell

Contributors

Preface

1. Functional Programming – a Comparison FREE CHAPTER

2. Functional Control Flow

3. Functional Data Structures

4. Generics and Polymorphism

5. Code Organization and Application Architecture

6. Mutability, Ownership, and Pure Functions

7. Design Patterns

8. Implementing Concurrency

9. Performance, Debugging, and Metaprogramming

1. Assessments

2. Other Books You May Enjoy

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Index

Using functional design for concurrency

Concurrency forces the programmer to be more careful about information sharing. This difficulty coincidentally encourages good functional programming practices, such as immutable data and pure functions; when computation is not context-sensitive, it tends to also be thread-safe.

Functional programming sounds great for concurrency, but are there downsides?

In one example of good intentions with bad effects, during development of a functional language called Haskell, the development team (https://www.infoq.com/interviews/armstrong-peyton-jones-erlang-haskell) wanted to make programs run faster using concurrency. Due to a unique trait of the Haskell language, it was possible to run all expressions and sub-expressions in new threads. The development team thought this sounded great and tested it out.

The result was that more time was spent spawning new threads than doing any computation. The idea still had merit, but it turned out that implementing concurrency...

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Authors (1)

Andrew Johnson

Andrew Johnson

Andrew Johnson is a software developer who has worn many hats. Professionally, he has worked on projects written in C, C++, Java, Python, Ruby, JavaScript, Haskell, OCaml, and now Rust. Most notably, he has worked as an early employee at Topsy Labs (acquired by Apple) and FiscalNote (growing rapidly). Academically, his interests are focused on the intersection between formal language processing (such as programming languages) and existing natural language programming techniques.

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