Real world examples and practical techniques for functional programming in C# without the jargon and theory. In Functional Programming in C#, Second Edition you will learn how to:     Use higher-order functions to reduce duplication and do more with less code     Use pure functions to write code that is easy to test and optimize     Write pleasant APIs that accurately describe your program's behavior     Use dedicated types to handle nullability, system errors, and validation rules predictably and elegantly     Write composable code without the overhead of an IoC container Functional Programming in C# has helped thousands of developers apply functional thinking to C# code. Its practical examples and spot-on treatment of FP concepts makes it the perfect guide for proficient C# programmers. This second edition is fully revised to cover new functional-inspired features in the most recent releases of C#, including tuples, async streams, pattern matching, and records. Each chapter is packed with awesome perspectives and epiphany moments on how functional programming can change the way you code. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the technology Turbocharge your C# code. Good functional techniques will improve concurrency, state management, event handling, and maintainability of your software. This book gives you practical answers to why, how, and where to add functional programing into your C# coding practice. About the book Functional Programming in C#, Second Edition teaches functional thinking for real-world problems. It reviews the C# language features that allow you to program functionally and through many practical examples shows the power of function composition, data-driven programming, and immutable data structures. All code examples work with .NET 6 and C# 10. What's inside     Higher-order functions reduce duplication and do more with less code     Code based on pure functions is easy to test and optimize     Write pleasant APIs that accurately describe your program’s behavior     Write a Web API in a functional style     Monadic composition with LINQ About the reader For intermediate C# programmers. About the author Enrico Buonanno studied Computer Science at Columbia University and has over 15 years of experience as a developer, architect, and trainer. Table of Contents PART 1 GETTING STARTED 1 Introducing functional programming 2 Thinking in functions 3 Why function purity matters PART 2 CORE TECHNIQUES 4 Designing function signatures and types 5 Modeling the possible absence of data 6 Patterns in functional programming 7 Designing programs with function composition PART 3 FUNCTIONAL DESIGNS 8 Functional error handling 9 Structuring an application with functions 10 Working effectively with multi-argument functions 11 Representing state and change 12 A short introduction to functional data structures 13 Event sourcing: A functional approach to persistence PART 4 ADVANCED TECHNIQUES 14 Lazy computations, continuations, and the beauty of monadic composition 15 Stateful programs and stateful computations 16 Working with asynchronous computations 17 Traversable and stacked monads 18 Data streams and the Reactive Extensions 19 An introduction to message-passing concurrency

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Enrico Buonanno studied computer science at Columbia University and has over 15 years of experience as a developer, architect, and trainer.

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