Book Image

Functional C#

Book Image

Functional C#

Overview of this book

Functional programming makes your application faster, improves performance, and increases your productivity. C# code is written at a higher level of abstraction, so that code will be closer to business requirements, abstracting away many low-level implementation details. This book bridges the language gap for C# developers by showing you how to create and consume functional constructs in C#. We also bridge the domain gap by showing how functional constructs can be applied in business scenarios. We’ll take you through lambda expressions and extension methods, and help you develop a deep understanding of the concepts and practices of LINQ and recursion in C#. By the end of the book, you will be able to write code using the best approach and will be able to perform unit testing in functional programming, changing how you write your applications and revolutionizing your projects.

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Functional C#
Dec, 2016 | 370 pages
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Table of Contents (19 chapters)
Functional C#
Functional C#
Credits
Credits
About the Author
About the Author
Acknowledgments
Acknowledgments
About the Reviewer
About the Reviewer
www.PacktPub.com
www.PacktPub.com
Customer Feedback
Customer Feedback
Preface
Preface
Free Chapter
1
Tasting Functional Style in C#
Tasting Functional Style in C#
Introducing functional programming
Comparison between functional and imperative programming
Preparing the C# compiler
Concepts of functional programming
Feeling functional in C#
Transforming imperative code to functional code
The advantages and disadvantages of functional programming
Summary
2
Walkthrough Delegates
Walkthrough Delegates
Introducing delegates
Built-in delegates
Distinguishing variance in delegates
Summary
3
Expressing Anonymous Methods with Lambda Expressions
Expressing Anonymous Methods with Lambda Expressions
Getting to know anonymous methods
Lambda expressions
Subscribing for events using lambda expressions
The advantages of using lambda expression in functional programming
Summary
4
Extending Object Functionality with Extension Methods
Extending Object Functionality with Extension Methods
Getting closer to extension methods
Calling extension methods in the other assemblies
Leveraging the interface, collection, and object
Advantages of using extension methods in functional programming
Limitations of the extension method
Summary
5
Querying Any Collection Easily with LINQ
Querying Any Collection Easily with LINQ
Getting started with LINQ
Deferring LINQ execution
Choosing between fluent syntax and query expression syntax
Enumerating standard query operators
Summary
6
Enhancing the Responsiveness of the Functional Program with Asynchronous Programming
Enhancing the Responsiveness of the Functional Program with Asynchronous Programming
Building a responsive application
The asynchronous programming model pattern
The task-based asynchronous pattern
Asynchronous programming with the async and await keywords
Asynchronous functions in functional programming
Summary
7
Learning Recursion
Learning Recursion
Exploring recursion
Using tail recursion
Recursion in a functional approach using LINQ Aggregate
Summary
8
Optimizing the Code using Laziness and Caching Techniques
Optimizing the Code using Laziness and Caching Techniques
Introduction to laziness
Caching expensive resources
Summary
9
Working with Pattern
Working with Pattern
Dissecting pattern matching in functional programming
Introducing Monad as a design pattern
Summary
10
Taking an Action in C# Functional Programming
Taking an Action in C# Functional Programming
Developing functional programming in Windows forms
Summary
11
Coding Best Practice and Testing the Functional Code
Coding Best Practice and Testing the Functional Code
Coding best practices in functional C#
Separating the code from domain logic and mutable shell
Summary

Functional C#

Copyright © 2016 Packt Publishing

All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.

Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.

Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.

First published: January 2017

Production reference: 1281216

Published by Packt Publishing Ltd.

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B3 2PB, UK.

ISBN 978-1-78528-222-5

www.packtpub.com

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