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ksdp

v1.4.7

Published

Ksike Design Patterns

Downloads

43

Readme

KsDp library

Design Patterns Library or core base library containing elements group of reusable Object-Oriented Design and functional programming. It is an attempt to combine implementations of: GoF, GRASP, IoC, SL, DI, SOLID, DRY, KISS, SoC, etc.

This library belong to the Ksike ecosystem:

  • KsMf - Microframework (WEB, REST API, CLI, Proxy, etc)
  • Ksdp - Design Patterns Library (GoF, GRASP, IoC, DI, etc)
  • KsCryp - Cryptographic Library (RSA, JWT, x509, HEX, Base64, Hash, etc)
  • KsHook - Event Driven Library
  • KsEval - Expression Evaluator Library
  • KsWC - Web API deployment Library
  • KsTpl - Template Engine

Install from npm package

npm install ksdp

This library is divided into four main categories, which are described below

Integration:

  • IoC Inversion of Control inverts the flow of control as compared to traditional control flow.
  • DI Dependency Injection is a technique in which an object receives other objects that it depends on.
  • LS Service Locator pattern is a design pattern used in software development to encapsulate the processes involved in obtaining a service with a strong abstraction layer.
  • Hook The Hooks pattern is a design pattern that facilitates event-driven programming within a software architecture.

Creational: Creational patterns are ones that create objects, rather than having to instantiate objects directly. This gives the program more flexibility in deciding which objects need to be created for a given case.

  • Abstract factory groups object factories that have a common theme.
  • Builder constructs complex objects by separating construction and representation.
  • Factory method creates objects without specifying the exact class to create.
  • Prototype creates objects by cloning an existing object.
  • Singleton restricts object creation for a class to only one instance.

Structural: These concern class and object composition. They use inheritance to compose interfaces and define ways to compose objects to obtain new functionality.

  • Adapter allows classes with incompatible interfaces to work together by wrapping its own interface around that of an already existing class.
  • Bridge decouples an abstraction from its implementation so that the two can vary independently.
  • Composite composes zero-or-more similar objects so that they can be manipulated as one object.
  • Decorator dynamically adds/overrides behaviour in an existing method of an object.
  • Facade provides a simplified interface to a large body of code.
  • Flyweight reduces the cost of creating and manipulating a large number of similar objects.
  • Proxy provides a placeholder for another object to control access, reduce cost, and reduce complexity.

Behavioral: Most of these design patterns are specifically concerned with communication between objects.

  • Chain of responsibility delegates commands to a chain of processing objects.
  • Command creates objects that encapsulate actions and parameters.
  • Interpreter implements a specialized language.
  • Iterator accesses the elements of an object sequentially without exposing its underlying representation.
  • Mediator allows loose coupling between classes by being the only class that has detailed knowledge of their methods.
  • Memento provides the ability to restore an object to its previous state (undo).
  • Observer is a publish/subscribe pattern, which allows a number of observer objects to see an event.
  • State allows an object to alter its behavior when its internal state changes.
  • Strategy allows one of a family of algorithms to be selected on-the-fly at runtime.
  • Template method defines the skeleton of an algorithm as an abstract class, allowing its subclasses to provide concrete behavior.
  • Visitor separates an algorithm from an object structure by moving the hierarchy of methods into one object.