Software Design Patterns and Practices Tutorials

Software Design Patterns tutorials with recommendations and best practices to design and develop highly performing applications that is easy to change.

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3130 views
Abstract: This tutorial introduces several architectural and design patterns that can be used to implement common scenarios in .NET desktop and mobile applications.
5219 views
Abstract: This article is an introduction to understand application architecture for the Microsoft technology stack.
6220 views
Abstract: In Part 2 of Best Coding Practices, I talk about keeping a clear separation between units of code that model data, and units of code that model behavior. I also talk about making data objects immutable.
10478 views
Abstract: In this Patterns and Practices tutorial, I will talk about the most important coding practices based on my experience. The first part focuses on Automated Testing.
9161 views
Abstract: The Maybe Monad is a container that represents a value that may or may not exist. In this tutorial, I will go through some methods that make working with the Maybe monad easier.
11948 views
Abstract: In this tutorial, I will discuss function parameters in C#. I will talk about how function parameters tend to become unclear as we maintain our programs and how to fix them.

The Maybe Monad (C#)

Authored by: Yacoub Massad , on 9/25/2019 in Category Patterns & Practices
17192 views
Abstract: In this tutorial, I will talk about the Maybe Monad; a container that represents a value that might or might not exist.
14436 views
Abstract: In this tutorial, I will talk about ways to handle state in multi-threaded C# applications, including race conditions.
11231 views
Abstract: The article talks about type expressiveness and how we can use the functional Either monad in C# to implement complex business logic that reads as simply as a description of sequential operations. We’ll also look at a technique that allows us to express a complex scenario involving multiple systems as pseudocode and then convert that pseudocode into something we can actually ship to production.
17245 views
Abstract: In this tutorial, I will discuss about global state in C# applications. I will talk about the problems of global state and discuss a solution.
31351 views
Abstract: This tutorial aims to be a guide for designing and implementing asynchronous and parallel data processing using the TPL Dataflow library from Microsoft. The TPL Dataflow consists of different building "blocks" that you compose in a pipeline fashion to structure your application in a clear way, allowing you to write readable and reusable C# code.
11150 views
Abstract: In this tutorial, I am going to go through some examples of data object design in C# and discuss some issues with them.

Composing Honest Methods in C#

Authored by: Yacoub Massad , on 12/16/2018 in Category Patterns & Practices
11614 views
Abstract: In this tutorial, I will provide a proof of concept in C# for composing honest methods. We will see how to create honest programs out of many honest methods.

Writing Pure Code in C#

Authored by: Yacoub Massad , on 10/14/2018 in Category Patterns & Practices
21076 views
Abstract: In this article, I will work on a C# game that contains impure code and work towards making the code pure. I am going to show you how to use PurityAnalyzer—an experimental Visual Studio extension I wrote—to help you write pure code in C#.
50220 views
Abstract: This tutorial demonstrates how to design software using the Command Query Separation (CQS) pattern. We will create a console application and will use C#, Entity Framework, Autofac and Log4Net for our example.

Writing Honest Methods in C#

Authored by: Yacoub Massad , on 7/22/2018 in Category Patterns & Practices
45419 views
Abstract: This C# tutorial describes approaches for making methods/functions more honest. A more honest method makes it easier for readers to understand what the method does by reading its signature, i.e., without reading its implementation.
22790 views
Abstract: This tutorial looks at a new approach to AOP called AOP via functions (in C#) as an attempt to mitigate the issues of the CQS approach.
17482 views
Abstract: This article highlights that software development is a highly complex process with lots of smaller steps that a Software Craftsman should follow in order to build something of quality.
39864 views
Abstract: Learn how to design multi-threading safe data objects in C# and how to “modify” immutable objects using the DataObjectHelper Visual Studio extension. Also use F# to concisely create our data objects, and use them in C# projects.

The Dataflow Pattern in .NET

Authored by: Yacoub Massad , on 1/18/2018 in Category Patterns & Practices
45331 views
Abstract: This article discusses the dataflow pattern, a variant of the producer-consumer pattern, along with examples of applying this pattern in .NET. Finally, you will also be introduced to ProceduralDataflow, a new library I created to help write clean dataflows.
68425 views
Abstract: This article discusses the producer-consumer pattern in .NET, some reasons why we should use it and demonstrates some examples of how to implement it in .NET.
29137 views
Abstract: Flux is a new application architecture introduced by Facebook in May 2014. This article compares the MVC architecture with Flux from various perspectives.
26079 views
Abstract: This article discusses problems and solutions related to resource management in complex C# applications. It also discusses automatic resource management that exists in the .NET framework.
53248 views
Abstract: This article describes how we can use Generics in C# to make our software more resilient to data-related changes, thereby improving its maintainability.
16084 views
Abstract: Is User Experience (UX) important or is it just a buzzword? This article analyzes the usefulness of UX in an application development process.
48368 views
Abstract: The article explains how Behavior Driven Development (BDD) works and provides a real-world example of how to use it to provide meaningful tests which can act as living documentation.
29737 views
Abstract: This article discusses the treatment of data in large C# software applications. More specifically, it discusses runtime data encapsulation, behavior-only encapsulation, and treatment of state.

Revisiting SOLID principles

Authored by: Craig Berntson , on 5/15/2017 in Category Software Gardening
99899 views
Abstract: This tutorial summarizes SOLID principles and answers some questions our viewers have asked about SOLID.
93933 views
Abstract: Effective error and exception handling in any kind of an application plays an important role in providing a pleasant experience to the user, when unexpected failures occur. This article talks about some effective error handling strategies that you can use in your projects.
21117 views
Abstract: This article describes how to do unit and integration testing using the Composition Root as the source of Systems Under Test (SUTs).
42180 views
Abstract: We will discuss Code Quality in the .Net ecosystem, with a brief look at tools included in Visual Studio and other third-party commercial tools.

Reduce Bad Code with Code Reviews

Authored by: Craig Berntson , on 3/16/2017 in Category Software Gardening
29960 views
Abstract: Do you think code reviews aren’t important? Think again. Code reviews are often recognized as the best way to improve code quality. This article will discuss the importance of code reviews, different types of code reviews, and how to conduct a code review.
58040 views
Abstract: Singleton is one of the basic software design patterns, but if not implemented correctly can introduce complications in your application. This article discusses common use cases where you should avoid the Singleton pattern.
36161 views
Abstract: Coding guidelines are just one of the many tools developers should have available in their toolshed. By using them, you will help ensure that your code is lush, green, and vibrant.
22338 views
Abstract: C# examples on how we can use the Text Template Transformation Toolkit (T4) to create aspects.
137703 views
Abstract: This article focuses on .NET Design Patterns using C# and takes a fresh view of some of the existing ones and see how we can go about using them in real world dilemmas and concerns.
125404 views
Abstract: Aspect Oriented Programming (AOP) in C# using SOLID principles. We will discuss challenges posed by context-independence in SOLID code bases, and provide a solution for them.
20674 views
Abstract: Agility and contractual development against a fixed price are conceptually two ends of a spectrum. In this article, we will see an option for companies to be agile even when they are executing a contractual fixed bid project

Object Composition with SOLID

Authored by: Yacoub Massad , on 7/18/2016 in Category Patterns & Practices
50204 views
Abstract: This article demonstrates how Object Composition with SOLID helps an application evolve.
48403 views
Abstract: Using Pure DI and the single level of abstraction per function rule to create Composition Roots that we can understand and navigate easily
40444 views
Abstract: Using Dependency Injection and SOLID principles to ensure testable and maintainable software.
25059 views
Abstract: This article presents a perspective of Liskov Substitution Principle (LSP) and presents an argument against some interpretation and practices of LSP that some people have/follow.
28787 views
Abstract: The Interface Segregation Principle (ISP) states that interfaces should be small and should contain only those methods or properties that are effectively required. We will explore ISP in this article.
45511 views
Abstract: Liskov Substitution Principle (LSP) is a SOLID principle that says that given a specific base class, any class that inherits from it, can be a substitute for the base class. We will explore LSP in this article.
41679 views
Abstract: The Open-Closed Principle (OCP) in SOLID states that a Software Entity should be open for extension but closed to modification. Learn about this principle in this article.
52439 views
Abstract: The Single Responsibility Principle (SRP) states that a class should do one thing and one thing only. Learn about this principle in this article.

Object Oriented Programming (C#)

Authored by: Craig Berntson , on 5/2/2015 in Category Software Gardening
37741 views
Abstract: This article talks about Object Oriented Programming (OOP), starting with the basics and with examples in C#.
65917 views
Abstract: Code refactoring isn’t code rewriting. Refactoring is the process of restructuring existing computer code without changing its external behaviour. This Software Gardening article talks about what is refactoring, why to refactor your code and the built-in refactorings in Visual Studio.
31003 views
Abstract: What is Agile Software Development? How well is Agile working for you? Where do you need to make changes? This Software Gardening article analyses Agile to see what it really means.

12 Unit Testing Myths and Practices

Authored by: Eli Lopian , on 1/27/2015 in Category Patterns & Practices
35389 views
Abstract: This article presents the most widely misunderstood concepts about unit testing today and provides relevant information about how the practice actually occurs.
27387 views
Abstract: This article talks about applying Continuous Delivery techniques to deliver working software.
73977 views
Abstract: Get started with unit testing using a simple ASP.NET MVC application. You’ll see how to setup the test and remove the database from the testing process.
43803 views
Abstract: Essential IT Admin skills that every .NET developer should have before going Live.

Software Branching Practices

Authored by: Craig Berntson , on 7/9/2014 in Category Software Gardening
30990 views
Abstract: This tutorial explains some best practices to help you improve your Software branching and merging techniques and in turn improve your code.
23149 views
Abstract: This article talks about continuous learning and why software developers must take responsibility for their skills and career. The author also shares some valuable resources to get you started.

Software Craftsmanship

Authored by: Craig Berntson , on 3/19/2014 in Category Software Gardening
31153 views
Abstract: This article talks about who is a Software craftsman, Software Craftsmanship, and what it is all about.
29747 views
Abstract: We begin our discussion of Good Project Management Techniques (Software Gardening) by discussing good soil, which in our case isn’t a software development technique at all, but is dependent on project management.
44174 views
Abstract: Comparing software development to constructing a building is wrong. This article discusses why construction is the wrong metaphor and that software is organic and changes in unpredictable ways
58238 views
Abstract: There are many best practices articles and coding guidelines for BizTalk, that are floating around the net, but they are not very conducive and pragmatic enough to the ‘IT services’ industry (especially in an offshore development model), to leverage them in their turnkey or T&M projects. This article attempts to fill those gaps.

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