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

Chapter 13. Troubleshooting Functional Code

In this chapter, I touch on an important aspect of the functional-first programming approach that kicks in when the F# code is in the process of being developed. It so happens that the troubleshooting of the functional-first code differs from the troubleshooting of, say, imperative code. The goal of this chapter is to share with you some of my observations collected while authoring idiomatic F# code. It should leave you equipped with some considerations and a few techniques for effective bug squashing.

In this chapter, we will look into the following topics:

  • Understanding reasons for idiomatic F# having a low defect rate

  • Using REPL and explorative programming style

  • Addressing some compile-time problems

  • Addressing run-time problems