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Design Patterns Library

By Steve Smith, David Starr, John Brown, Scott Allen, Brian Lagunas, Robert Horvick, Keith Sparkjoy, Niraj Bhatt, Glenn Block and Donald Belcham
A reference library for design patterns of all types
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Course info
Rating
(2861)
Level
Intermediate
Updated
Sep 10, 2010
Duration
15h 37m
Table of contents
Introduction to Design Patterns
Introduction 1m What They Are 5m Design Pattern History 3m Pattern Organization and Language 2m Why Patterns Matter 3m Criticisms 1m The PSOD Patterns Library 2m Summary 2m
Adapter Pattern
Introduction 0m Motivating Example 1m Graphic Example 1m Real World Example 1m Intent 0m Applicability 1m Structure 2m How It Gets Used 1m Collaboration 0m Consequences 1m Implementation Example 1m Demo 16m Related Patterns 1m References 1m Summary 1m
Bridge Pattern
Introduction 1m What Is It? 3m Nom Nom Burger 4m Inital Problem 3m Wrong Solution 4m Refactoring to Bridge 4m Standard Formatter 2m Reverse Formatter 2m Fancy Formatter 1m What We Did 3m Common Usages 2m Summary 1m
The Builder Pattern
Introduction 3m Understanding Builder 5m Problem 1 5m Problem 2 9m Problem 3 10m What We Built 7m Variations 3m Summary 3m
Chain of Responsibility
Introduction 2m Traditional Usage 0m Motivating Example 1m Demo: Expense Report 4m Demo: Expense Report w/CoR 6m Demo: Non-Traditional Usage 10m Summary 1m
The Command Pattern
Introduction 0m Motivating Example 4m Intent and Applicability 3m Structure and Consequences 4m Implementation Example 11m Related Patterns 1m Summary 1m
Composite Pattern
Introduction 1m Breaking it Down 2m Email Example 3m Split Gold 4m Refactoring 1 4m Refactoring 2 6m Adding Depth 4m Using a Root 1m Formal Definition 2m When to Use 2m Summary 2m
Decorator Design Pattern
Introduction 1m Motivating Example 2m Intent 2m Applicability 2m Structure 4m How it Works 2m Motivating Example Refactored 1m Demo: Overview of the Project 1m Demo: Create the Decorator 2m Demo: Create the Concrete Decorator 5m Demo: Adding more Concrete Decorators 2m Consequences 1m Related Patterns 1m Summary 1m
Event Aggregator
Introduction 0m Motivating Example 1m Demo: The Order Application 1m Pattern Intent 2m Applicability 1m Demo: Solving With Standard .NET Events 6m Issues with Current Implementation 2m Pattern Structure 0m Demo: Using Event Aggregator 7m Demo: Details of Implementation 5m Consequences of the Pattern 1m Known Variations 2m Related Patterns 1m Summary 1m
Facade Pattern
Introduction 1m Intent 2m Demo: Motivating Example 1 3m Demo: Motivating Example 2 2m Structure 2m Consequences 1m Demo: Facade Pattern Example 3m Common Uses 1m Demo: Real World Example 3m Related Patterns 1m Summary 1m
Factory Patterns
Introduction 1m Motivating Example 1m Demo: Example 4m Intent 2m Simple Factory Pattern 1m Demo: Simple Factory Pattern 4m Simple Factory Pattern Notes 1m Factory Method Pattern 2m Demo: Factory Method Pattern 6m Factory Method Pattern Notes 2m Abstract Factory Pattern 3m Demo: Abstract Factory Pattern 4m Abstract Factory Pattern Notes 1m Real World Examples 3m Summary 2m
Flyweight
Introduction 1m Intent 1m Demo: Motivating Example 6m Structure 3m Consequence 1m Demo: Implementing the Pattern 3m Demo: Real World Example 3m Related Patterns 1m Summary 0m
Interpreter Pattern
Introduction 1m Break Down 2m Bar Codes 2m How Bar Codes Work 2m A Challenge 2m Sandwhich Demo Overview 7m Sandwhich Demo 4m Formal Definition 2m Summary 1m
Iterator Pattern
Introduction 1m Pattern Usage 2m Without Iterators 1m Intent 1m Applicability 2m Iterators in C# 2m Collaboration 1m Consequences 1m Demo 18m Related Patterns 2m Summary 1m
Lazy Load Pattern
Introduction 0m Motivating Example 1m Intent 1m Applicability 2m Lazy Initialization 2m Demo: Lazy Initialization 11m Virtual Proxy 3m Demo: Virtual Proxy 4m Proxy Consequences 1m Value Holder 2m Demo: Value Holder 6m Ghosts 1m Demo: Ghosts 12m How It Is Used 1m Consequences 3m Related Patterns 0m References 1m Summary 1m
Mediator Pattern
Introduction 0m Motivating Example 0m Demo: Motivating Example 3m Definition 3m Demo: Mediator Pattern 6m Advantages and Disadvantages 1m Summary 0m
Memento
Introduction 1m Intent 1m Applicability 1m How It Is Used 1m Undo / Redo 1m Collaboration 1m Consequences 1m Operations 2m Iterative State 1m Demo: WPF Paint 10m Related and Summary 2m
Model View Presenter (MVP) Pattern
Introduction 1m Why You Care 1m Intent 3m A Note on Variations 3m Structure and Organization 6m Demo: Web Form Example 1 10m Demo: Web Form Example 2 8m Demo: Windows Forms Example 3m Collaboration Among Objects 2m Consequences 1m Known Uses 1m Related Patterns 1m Summary 2m
Model View ViewModel (MVVM) Pattern
Introduction 2m History 2m Intent 2m Structure 2m Demo: Creating the Application 2m The Model 1m Demo: Creating the Model 4m The ViewModel 2m Demo: Creating the ViewModel 3m The View 1m Demo: Creating the View 6m Binding the View and ViewModel 3m Communication Between the View and ViewModel 1m Demo: Communicating with Commands 6m Collaboration 2m Consequences 2m Known Uses 1m Related Patterns 1m Summary 1m
Null Object Pattern
Introduction 0m Motivating Example 1m Demo: Example 1 1m Demo: Example 2 3m Intent 1m Applicability 2m Also Known As 1m Structure 1m Demo: Implementation Example 6m Consequences 1m Notes and Related Patterns 2m Summary 1m
Observer Pattern
Introduction 2m Motivating Example 3m Introduction to the Observer 2m Traditional 1m Demo: Traditional 3m Consequences 3m Events and Delegates 2m Demo: Events and Delegates 3m IObserver 3m Demo: IObserver 4m Real World Examples 3m Summary 1m
The Prototype Pattern
Introduction 3m Understanding Prototype 4m Problem 1 6m Problem 2 4m Problem 3 4m The Prototype Design 4m Language Examples 4m Summary 3m
Proxy Pattern
Introduction 0m Intent 0m Motivating Example 1m Applicability 1m Structure 1m How It Is Used 1m Lazy Loading 2m Consequences 2m Demo: Virtual Proxy 12m Demo: Remote Proxy 6m Demo: CachedRepository 6m Related Patterns 1m Summary 1m
Repository
Introduction 2m Intent 2m IEmployeeRepository 7m Generic IRepository 2m Repository at Work 3m Implementing a Repository 5m Tests and Separation 4m Applicability 1m Consequences 2m Related Patterns 2m Summary 1m
Singleton
Introduction 0m Motivating Example 1m Intent 0m Applicability 1m Structure 1m Structure (not thread safe) 1m How It Is Used 1m Structure (thread safe) 2m Collaboration 0m Consequences 1m Single Responsibility 1m Implementation Example 4m Demo: Adding the Singleton 16m Related Patterns 1m References 1m Summary 1m
Service Locator Pattern
Introduction 1m Motivating Example 1m Demo: Simple Version 2m Intent 2m Structure 1m Demo: Improved Version 4m Other Providers 2m Demo: Advanced Version 6m Benefits 2m Consequences 1m Related Patterns 2m Summary 2m
State Pattern
Introduction 1m Motivating Example 2m Demo: Simple Version 2m Demo: Simple Version Code Review 2m Issues with the Simple Approach 1m Intent 1m Structure 2m Demo: Advanced Version Code Review 3m States 3m State Change 1m Demo: Advanced Version 1m Benefits 1m Known Uses 1m Summary 1m
Strategy Pattern
Introduction 1m Demo: Motivating Example 6m Intent and Applicability 3m The Pattern in UML 2m Demo: Implementation Example 3m Consequences 2m Variation Examples 4m Summary 1m
Template Method
Introduction 0m Motivating Example 1m Applicability 0m Structure 1m How It Is Used 1m Consequences 1m Hooks 0m Hollywood Principle 1m Implementation Example 8m Related Patterns 0m References 1m Summary 1m
Unit of Work
Introduction 2m Intent 2m UoW in ADO.NET 2m ObjectContext 3m IUnitOfWork 3m Implementing IUnitOfWork 3m Applicability and Consequences 1m Related Patterns 2m Summary 1m
Visitor Pattern
Introduction 1m Breaking it Down 2m Real Life Example 3m Net Worth Without Visitor 2m Refactoring to Visitor 8m Monthly Income Visitor 3m Formal Definition 2m Summary 2m
Rules Pattern
Introduction 1m Motivating Example 1m Demo: Customer Discounts 5m What's the Problem? 2m Intent 2m Applicability 1m Structure 1m Demo: Using Rules 14m Alternate Structure 1m Considerations 1m Business Rules Engines 1m Practice: Greed Kata 1m Demo: Greed Overview 7m Summary 2m
Specification Pattern
Introduction 1m Intent 2m Implementation 2m Predicates 8m Uses and Validation 3m Specifications and Data 12m Demo: Creating Smart Playlists 8m Summary 1m
Description
Course info
Rating
(2861)
Level
Intermediate
Updated
Sep 10, 2010
Duration
15h 37m
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Description

The Design Patterns Library contains descriptions and examples of software design patterns that you can apply in your daily development. These patterns are time proven techniques for building long-lived, well factored software that are widely used in software development today.

Unlike other courses in our library, this course will continue to grow with new patterns each month, so check back often.

Course FAQ
Course FAQ
What is a software design pattern?

You can think of a design pattern as a template for how to solve a specific problem when designing software.

How strictly do I need to follow software design patterns?

Design patterns do not dictate every line of code because even though we all run into similar problems, each situation is unique. A design pattern will give you a great starting point but is not the end solution, itself.

Is Pluralsight's software design pattern library comprehensive?

No, that's impossible. As the craft of software development continues to expand, there are always new classifications, problems, and software design patterns coming to light. But we are always adding new design patterns to this library so check back often.

What software is required for this course?

These design patterns were built for the .NET Framework.

About the author
Steve Smith
About the author

Steve Smith (@ardalis) is an entrepreneur and software developer with a passion for building quality software as effectively as possible.

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David Starr
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David Starr is a Principal Azure Solutions Architect for Microsoft and has worked in technology leadership positions for over 20 years. He specializes in agile software development practices, patterns and practices, and judicious application of various technologies within development teams. He is a 5 time Microsoft MVP in Visual Studio and a technical instructor with Pluralsight where he focuses on the software development practices and developer tooling curricula. David blogs at ElegantCode.com, is a frequent contributor at conferences and a frequent writer. He has successfully led many product development teams and is a technical learning professional.

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John Brown
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John Brown is a Software Craftsman continually looking for intuitive designs, agile architectures, and streamlined processes. With degrees in Computer Science from Johns Hopkins and Aerospace Engineering from Purdue, John is always up for a challenge, especially in his areas of interest in Artificial Intelligence and Machine Learning.

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Scott Allen
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Scott has over 15 years of experience in commercial software development and is a frequent speaker at national conferences, and local user groups. Scott is a Microsoft MVP and has authored books on several Microsoft technologies, including ASP.NET, C#, and Windows Workflow.

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Brian Lagunas
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Brian Lagunas is a Microsoft MVP, a Microsoft Patterns & Practices Champion, Director of Technology for INETA, co-leader of the Boise .Net Developers User Group (NETDUG), board member of Boise Code Camp, speaker, trainer, author, and original creator of the Extended WPF Toolkit.

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Robert Horvick
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Robert spent nearly 10 years at Microsoft creating software that made it easier for everyone else to write software. Most recently Robert worked on Team Foundation Server on the Administration and Version Control teams. Currently Robert can be found working in the utilities sector on Smart Grid technologies.

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Keith Sparkjoy
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Keith is a co-founder of Pluralsight, serving as CTO through 2014, where he helped build the initial content delivery system for Pluralsight, then focused on hiring an awesome team of developers in Utah to take it to the next level.

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Niraj Bhatt
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Niraj works as an Enterprise Architect for a Fortune 500 company and has an innate passion for building / studying software systems. He is also a manager/speaker at BDOTNET, India’s largest .NET user group.

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Donald Belcham
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Donald Belcham is a senior software developer, independent contractor, and agile development expert who is a strong supporter of fundamental OO patterns and practices. Since 2007, he has been awarded the Microsoft MVP Award in C# and is a member of the JetBrains Academy.

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Course info
Rating
(2861)
Level
Intermediate
Updated
Sep 10, 2010
Duration
15h 37m
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