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Design Patterns in C#

Dmitri Nesteruk

Discover modern implementations of Design Patterns using the C# programming language.

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About

About

About the Book

This book provides a modern, comprehensive overview of design pattern implementations for the .NET ecosystem using the C# programming language. The book covers every single pattern from the Gang of Four and a few extras such as enterprise and functional design patterns.

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Author

About the Author

Dmitri Nesteruk

Dmitri Nesteruk is a developer, speaker, podcaster and a technologist. His interests lie in software development and integration practices in the areas of computation, quantitative finance and algorithmic trading. He is an instructor of an entry-level course in Quantitative Finance. His technological interests include C#, F# and C++ programming as well high-performance computing using technologies such as CUDA. He has been a C# MVP since 2009.

Contents

Table of Contents

Introduction

  1. Who This Book Is For
  2. On Code Examples
  3. Preface to the 2nd Edition

The SOLID Design Principles

  1. Single Responsibility Principle
  2. Open-Closed Principle
  3. Liskov Substitution Principle
  4. Interface Segregation Principle
  5. Dependency Inversion Principle

The Functional Perspective

  1. Function Basics
  2. Functional Literals in C#
  3. Storing Functions in C#
  4. Functional Literals in F#
  5. Composition
  6. Functional-Related Language Features
  7. Creational Patterns

Builder

  1. Scenario
  2. Simple Builder
  3. Fluent Builder
  4. Communicating Intent
  5. Composite Builder
  6. Builder Parameter
  7. Builder Extension with Recursive Generics
  8. Lazy Functional Builder
  9. DSL Construction in F#
  10. Summary

Factories

  1. Scenario
  2. Factory Method
  3. Asynchronous Factory Method
  4. Factory
  5. Inner Factory
  6. Abstract Factory
  7. Delegate Factories in IoC
  8. Functional Factory
  9. Summary

Prototype

  1. Deep vs. Shallow Copying
  2. ICloneable Is Bad
  3. Deep Copying with a Special Interface
  4. Deep Copying Objects
  5. Duplication via Copy Construction
  6. Serialization
  7. Prototype Factory
  8. Summary

Singleton

  1. Singleton by Convention
  2. Classic Implementation
  3. The Trouble with Singleton
  4. Singletons and Inversion of Control
  5. Monostate
  6. Multiton
  7. Summary
  8. Structural Patterns

Adapter

  1. Scenario
  2. Adapter
  3. Adapter Temporaries
  4. The Problem with Hashing
  5. Property Adapter (Surrogate)
  6. Generic Value Adapter
  7. Adapter in Dependency Injection
  8. Adapters in the .NET Framework
  9. Summary

Bridge

  1. Conventional Bridge
  2. Dynamic Prototyping Bridge
  3. Summary

Composite

  1. Grouping Graphic Objects
  2. Neural Networks
  3. Shrink Wrapping the Composite
  4. Composite Specification
  5. Summary

Decorator

  1. Custom String Builder
  2. Adapter-Decorator
  3. Multiple Inheritance with Interfaces
  4. Multiple Inheritance with Default Interface Members
  5. Dynamic Decorator Composition
  6. Static Decorator Composition
  7. Functional Decorator
  8. Summary

Façade

  1. Magic Squares
  2. Building a Trading Terminal
  3. An Advanced Terminal
  4. Where’s the Façade?
  5. Summary

Flyweight

  1. User Names
  2. Text Formatting
  3. Summary

Proxy

  1. Protection Proxy
  2. Property Proxy
  3. Value Proxy
  4. Composite Proxy: SoA/AoS
  5. Composite Proxy with Array-Backed Properties
  6. Virtual Proxy
  7. Communication Proxy
  8. Dynamic Proxy for Logging
  9. Summary
  10. Behavioral Patterns

Chain of Responsibility

  1. Scenario
  2. Method Chain
  3. Broker Chain
  4. Summary

Command

  1. Scenario
  2. Implementing the Command Pattern
  3. Undo Operations
  4. Composite Commands (a.k.a. Macros)
  5. Functional Command
  6. Queries and Command Query Separation
  7. Summary

Interpreter

  1. Numeric Expression Evaluator
  2. Interpretation in the Functional Paradigm
  3. Summary

Iterator

  1. Array-Backed Properties
  2. Let’s Make an Iterator
  3. Improved Iteration
  4. Iterator Adapter
  5. Summary

Mediator

  1. Chat Room
  2. Mediator with Events
  3. Introduction to MediatR
  4. Summary

Memento

  1. Bank Account
  2. Undo and Redo
  3. Using Memento for Interop
  4. Summary

Null Object

  1. Scenario
  2. Intrusive Approaches
  3. Null Object
  4. Dynamic Null Object
  5. Summary

Observer

  1. Events
  2. Weak Event Pattern
  3. Event Streams
  4. Property Observers
  5. Observable Collections
  6. Declarative Subscriptions in Autofac
  7. Summary

State

  1. State Driven State Transitions
  2. Handmade State Machine
  3. Switch-Based State Machine
  4. Encoding Transitions with Switch Expressions
  5. State Machines with Stateless
  6. Summary

Strategy

  1. Dynamic Strategy
  2. Static Strategy
  3. Equality and Comparison Strategies
  4. Functional Strategy
  5. Summary

Template Method

  1. Game Simulation
  2. Functional Template Method
  3. Summary

Visitor

  1. Intrusive Visitor
  2. Reflective Printer
  3. What is Dispatch?
  4. Dynamic Visitor
  5. Classic Visitor
  6. Acyclic Visitor
  7. Functional Visitor
  8. Summary

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