What is the Bridge Pattern? The definition of the Bridge Pattern from both Design Patterns: Elements of Reusable Object-Oriented Software and Head First Design Patterns: A Brain-Friendly Guide is The Bridge Pattern allows you to vary the implementation and the abstraction by placing the two in separate class hierarchies. Bridge Pattern Pattern Class Diagram Explained … [Read more…]
What is the Proxy Pattern? The definition of the Proxy Pattern from both Design Patterns: Elements of Reusable Object-Oriented Software and Head First Design Patterns: A Brain-Friendly Guide is The Proxy Pattern provides a surrogate or placeholder for another object to control access to it. Proxy Pattern Class Diagram Explained The above class diagram represents … [Read more…]
What is the State Pattern? The definition of the State Pattern from both Design Patterns: Elements of Reusable Object-Oriented Software and Head First Design Patterns: A Brain-Friendly Guide is The State Pattern allows an object to alter its behavior when its internal state changes. The object will appear to change its class. State Pattern Class … [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…]