Book Image

F# High Performance

By : Eriawan Kusumawardhono
Book Image

F# High Performance

By: Eriawan Kusumawardhono

Overview of this book

F# is a functional programming language and is used in enterprise applications that demand high performance. It has its own unique trait: it is a functional programming language and has OOP support at the same time. This book will help you make F# applications run faster with examples you can easily break down and take into your own work. You will be able to assess the performance of the program and identify bottlenecks. Beginning with a gentle overview of concurrency features in F#, you will get to know the advanced topics of concurrency optimizations in F#, such as F# message passing agent of MailboxProcessor and further interoperation with .NET TPL. Based on this knowledge, you will be able to enhance the performance optimizations when implementing and using other F# language features. The book also covers optimization techniques by using F# best practices and F# libraries. You will learn how the concepts of concurrency and parallel programming will help in improving the performance. With this, you would be able to take advantage of multi-core processors and track memory leaks, root causes, and CPU issues. Finally, you will be able to test their applications to achieve scalability.
Table of Contents (15 chapters)
F# High Performance
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Introducing asynchronous workflow


Asynchronous support in F# is implemented nicely using async workflow computations.

The initial release of F# 1.0 did not have it. Asynchronous workflow was introduced in F# 1.9.2.9, and it is categorized as a workflow because it is actually an implementation of a computation expression (builder) that is escalated as a language block of async. It is also a good sample of a best practice in implementing function compositions and in expressively implementing Monad. Monad is one of the functional composition implementations, an idea taken from or inspired by the category theory knowledge domain.

Function composition is actually a composition of computation operations; they can be functions or composite statements such as for loop constructs. It is also quite intuitive, and it's also easier to use as the necessary detailed composition operations are hidden. Usually, there is a bind operator to compose two functions (or computations).

The foundational theory of...