Design Patterns: Singleton

Ensuring single instance use during instantiation. Every so often in development, a business rule dictates that instantiation of a certain… Read more Design Patterns: Singleton

Design Patterns: Service Locator

Completing the IoC Design Pattern. In my Design Patterns: Inversion of Control article, I illustrated how to decouple classes from… Read more Design Patterns: Service Locator

Design Patterns: Inversion of Control

Providing flexibility into the domain by abstracting implementation. Using abstraction between concrete and class implementation, avoid tightly-coupled classes, which leads… Read more Design Patterns: Inversion of Control

Design Patterns: Factory

Providing flexible object-instantiation. In this example, I’ll illustrate a method by which a SalesAssociate object may be instantiated that is… Read more Design Patterns: Factory

Design Patterns: Adapter

Exposing class behavior from another class. Sometimes you might need to access and use functionality defined from one class from… Read more Design Patterns: Adapter