Book Image

F# 4.0 Design Patterns

By : Gene Belitski
Book Image

F# 4.0 Design Patterns

By: Gene Belitski

Overview of this book

Following design patterns is a well-known approach to writing better programs that captures and reuses high-level abstractions that are common in many applications. This book will encourage you to develop an idiomatic F# coding skillset by fully embracing the functional-first F# paradigm. It will also help you harness this powerful instrument to write succinct, bug-free, and cross-platform code. F# 4.0 Design Patterns will start off by helping you develop a functional way of thinking. We will show you how beneficial the functional-first paradigm is and how to use it to get the optimum results. The book will help you acquire the practical knowledge of the main functional design patterns, the relationship of which with the traditional Gang of Four set is not straightforward. We will take you through pattern matching, immutable data types, and sequences in F#. We will also uncover advanced functional patterns, look at polymorphic functions, typical data crunching techniques, adjusting code through augmentation, and generalization. Lastly, we will take a look at the advanced techniques to equip you with everything you need to write flawless code.
Table of Contents (20 chapters)
F# 4.0 Design Patterns
Credits
About the Author
Acknowledgements
About the Reviewer
www.PacktPub.com
Preface

Intrinsic F# language features


Along with features inherited from F# predecessors, the F# language carries its own set of notable novel facilities. The outline of these facilities is discussed in the upcoming sections.

Indentation-aware syntax

Yes, this is correct; the F# compiler is sensitive to indentation in the source code (https://msdn.microsoft.com/en-us/library/dd233191.aspx), so correct code formatting is not just a matter of aesthetics. Why? Firstly, the improved code readability is enforced by the compiler, and secondly, this design choice dramatically decreases the amount of noise in the F# source code as block markers (such as curly brackets in C#) do not present, overall making the F# source code significantly shorter than the equivalent C# one.

Units of measure

This feature (https://msdn.microsoft.com/en-us/library/dd233243.aspx) allows you to decorate values with associated units and statically validate unit usage correctness by the compiler as well as infer units associated with...