You're reading from Learn C# Programming A guide to building a solid foundation in C# language for writing efficient programs

Product type Paperback

Published in Apr 2020

Publisher Packt

ISBN-13 9781789805864

Length 636 pages

Edition 1st Edition

Languages

Tools

.NET

Concepts

Programming Language

Authors (4):

Raffaele Rialdi

Ankit Sharma

Prakash Tripathi

Marius Bancila

View More author details

Table of Contents (20) Chapters

Preface

1. Chapter 1: Starting with the Building Blocks of C#

2. Chapter 2: Data Types and Operators FREE CHAPTER

3. Chapter 3: Control Statements and Exceptions

4. Chapter 4: Understanding the Various User-Defined Types

5. Chapter 5: Object-Oriented Programming in C#

6. Chapter 6: Generics

7. Chapter 7: Collections

8. Chapter 8: Advanced Topics

9. Chapter 9: Resource Management

10. Chapter 10: Lambdas, LINQ, and Functional Programming

11. Chapter 11: Reflection and Dynamic Programming

12. Chapter 12: Multithreading and Asynchronous Programming

13. Chapter 13: Files, Streams, and Serialization

14. Chapter 14: Error Handling

15. Chapter 15: New Features of C# 8

16. Chapter 16: C# in Action with .NET Core 3

17. Chapter 17: Unit Testing

18. Assessments

19. Other Books You May Enjoy

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Functional programming

C# is a general-purpose and multi-paradigm programming language. Yet, so far in this book, we have only covered the imperative programming paradigm, which uses statements to change the program state and is focused on describing how a program operates. In imperative programming, functions may have side effects, thus changing the program state when they execute. Alternatively, the execution of a function may depend on the program state.

The opposite paradigm is functional programming, which is concerned with describing what a program does and not how it does it. Functional programming treats computation as the evaluation of functions; it uses immutable data and avoids changing states. Functional programming is a declarative programming paradigm where expressions are used instead of statements. Functions no longer have side effects but are idempotent. This means that calling a function with the same arguments produces the same results every time.

Functional...