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Software design patterns Online versionby MARIA JOSE VILLALBA LOZANO
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Starts with AIn this pattern, an interface creates sets or families of related objects without specifying the class name.Starts with BAllows to produce different types and representations of an object using the same construction code. It is used for step-by-step creation of a complex object by combining simple objects. The final creation of objects depends on the stages of the creative process, but is independent of other objects.Starts with CIt is used to group objects as a single object. It allows you to compose objects into tree structures and then work with these structures as if they were individual objects.Starts with DThis pattern restricts the alteration of the object structure while adding new functionality. The initial class remains unchanged while a class provides additional capabilities.Contains EIt is used to link two interfaces that are not compatible and use their functionalities. The adapter allows the classes to work together in another way that they could not because they are incompatible interfaces.Starts with FProvides an interface to create objects in a superclass, but allows subclasses to alter the type of objects to be created. Provides implicit object instantiation through common interfaces.Contains GIn this pattern there is a structural alteration in the main and interface implementer classes without having any effect between them. These two classes can be developed independently and are only connected using an interface as a bridge.Contains HIt is used with components that have similarity where a code template can be implemented to test both components. The code can be changed with minor modifications.Starts with IIt is used to evaluate the language or expression by creating an interface that indicates the context for the interpretation.Starts with MThis pattern provides an easy communication through its class that allows communication for several classes.Contains NThe pattern allows to traverse elements of a collection without exposing its underlying representation.Starts with OAllows to define a subscription mechanism to notify several objects about any event that happens to the object being observed.Starts with PAllows you to copy existing objects without making your code dependent on their classes. It is used to restrict memory/database operations by keeping modification to a minimum using object copies.Contains RThe design pattern is a behavioral pattern that avoids coupling the sender of a request to its receiver by giving more than one object the possibility of responding to a request.Starts with SThis design pattern restricts the creation of instances of a class to a single object.Contains TIts utility is to provide sequential access to a number of elements present within a collection object without any exchange of relevant information.Starts with VThe purpose of a Visitor pattern is to define a new operation without introducing modifications to an existing object structure.Contains WThe pattern is used to reduce memory usage and improve performance by reducing object creation. The pattern looks for similar objects that already exist for reuse instead of creating new ones that are similar.Contains XIt is used to create objects that can represent functions of other classes or objects and the interface is used to access these functionalities.Contains YIt allows you to define a family of algorithms, put each of them in a separate class and make their objects interchangeable. |