Why just get by in F# when you can program in style. This book goes beyond syntax and into design. It provides F# developers with best practices, guidance, and advice to write beautiful, maintainable, and correct code. This second edition, fully updated for .NET 6 and F# 6, includes all new coverage of anonymous records, the task {} computation expression, and the relationship between types and modules.

Stylish F# 6 covers every design decision that a developer makes in constructing F# programs, helping you make the most educated and valuable design choices at every stage of code development. You will learn about the design of types and function signatures, the benefits of immutability, and the uses of partial function application. You will understand best practices for writing APIs to be used by F#, C#, and other languages. Each carefully vetted design choice is supported with compelling examples, illustrations, and rationales.

What You Will Learn

Know why, when, and how to code in immutable style
Use collection functions, piping, and function composition to build working software quickly
Be aware of the techniques available to bring error handling into the mainstream of program logic
Optimize F# code for maximum performance
Identify and implement opportunities to use function injection to improve program design
Appreciate the methods available to handle unknown data values
Understand asynchronous and parallel programming in F#, and how it differs from C# asynchronous programming
Exploit records and anonymous records as low-overhead, easily comparable containers for structured data

Who This Book Is For

Any developer who writes F# code and wants to write it better

About the Author

Kit Eason is a software developer and educator with more than 20 years of experience. He has been programming in F# since 2011 and is employed at Perpetuum Ltd., working on an extensive network of energy-harvesting vibration sensors fitted to railway rolling stock and infrastructure. Kit is an avid F# user who is passionate about teaching others. He has contributed to several publications, including Apress books Beginning F# and F# Deep Dives. He often teaches on the topic of F# and his popular videos appear on Udemy and Pluralsight.

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