Structural pattern

In software engineering, structural design patterns are design patterns that ease the design by identifying a simple way to realize relationships among entities.

Examples of Structural Patterns include:


 * Adapter pattern: 'adapts' one interface for a class into one that a client expects
 * Adapter pipeline: Use multiple adapters for debugging purposes.
 * Retrofit Interface Pattern: An adapter used as a new interface for multiple classes at the same time.
 * Aggregate pattern: a version of the Composite pattern with methods for aggregation of children
 * Bridge pattern: decouple an abstraction from its implementation so that the two can vary independently
 * Tombstone: An intermediate "lookup" object contains the real location of an object.
 * Composite pattern: a tree structure of objects where every object has the same interface
 * Decorator pattern: add additional functionality to an object at runtime where subclassing would result in an exponential rise of new classes
 * Extensibility pattern: a.k.a. Framework - hide complex code behind a simple interface
 * Facade pattern: create a simplified interface of an existing interface to ease usage for common tasks
 * Flyweight pattern: a large quantity of objects share a common properties object to save space
 * Marker pattern: an empty interface to associate metadata with a class.
 * Pipes and filters: a chain of processes where the output of each process is the input of the next
 * Opaque pointer: a pointer to an undeclared or private type, to hide implementation details
 * Proxy pattern: a class functioning as an interface to another thing