What is the Template Method Pattern? The definition of the Template Method Pattern from both Design Patterns: Elements of Reusable Object-Oriented Software and Head First Design Patterns: A Brain-Friendly Guide is The Template Method Pattern defines a skeleton of an algorithm in a method deferring some steps to subclasses. Template Method lets subclasses redefine certain … [Read more…]
What is the Adapter Pattern? The definition of the Adapter Pattern from both Design Patterns: Elements of Reusable Object-Oriented Software and Head First Design Patterns: A Brain-Friendly Guide is The Adapter Pattern converts the interface of a class into another interface clients expect. Adapter lets classes work together that couldn’t otherwise because of incompatible interfaces. … [Read more…]
What is the Command Pattern? The definition of the Command Pattern from both Design Patterns: Elements of Reusable Object-Oriented Software and Head First Design Patterns: A Brain-Friendly Guide is The Command Pattern encapsulates a request as an object, thereby letting you parameterize other objects with different requests, queue or log requests, and support undoable operations. … [Read more…]
Weighted Random Bracket Generator I am a big fan of the NCAA Men’s Basketball Tournament. I like to fill out online brackets at ESPN.com for fun every year. Well, I noticed there was an option to randomly generate the bracket this year. For each game, each team had a 50/50 chance of winning. This can … [Read more…]
What is the Singleton Pattern? The Singleton Pattern makes sure a class has only one instance and provides a way to access it globally. It’s typically preferred, within the development community, to find alternatives to using global access, if possible. What the Singleton Pattern does better than say, a global variable, is that it’s access … [Read more…]
What is the Abstract Factory Pattern? In a previous post, I described the Factory Method Pattern and provided a C++ code example. In this post I would like to provide information on another factory pattern, the Abstract Factory Pattern. Let’s jump right in and start with the Abstract Factory Pattern’s formal definition from “Head First … [Read more…]
What is the Factory Method Pattern? If you are looking for a way to encapsulate the creation of objects, factory patterns are just what you need. There are multiple factory patterns but in this post I will just be focusing on the Factory Method Pattern. It is a factory pattern so we should expect the … [Read more…]
What is the Decorator Pattern? Ever find yourself creating derived classes to add new or variant behavior from an existing class? I have. It seems like a good idea to start but can quickly become a complex maintenance nightmare. I have learned my lesson and avoid falling into that mindset when I need to add … [Read more…]
What is the Observer Pattern? The Observer Pattern is a design pattern that allows any number of objects to observe state of a single object and be informed of any changes. The single object is typically described as the subject where the objects interested in changes of the subject are known as observers. The observers … [Read more…]
When I first heard about common areas for teams to work I have to admit I wasn’t too keen on the idea. I wanted my own space and privacy which I had come accustom to. I also thought that there would be too many distractions that would negatively affect my productivity. Most engineers I worked … [Read more…]