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The observer design pattern is a behavioural pattern listed among the 23 well-known "Gang of Four" design patterns that address recurring design challenges in order to design flexible and reusable object-oriented software, yielding objects that are easier to implement, change, test and reuse.
ReactiveX (Rx, also known as Reactive Extensions) is a software library originally created by Microsoft that allows imperative programming languages to operate on sequences of data regardless of whether the data is synchronous or asynchronous.
The OSGi environment doesn't entirely follow basic programming rules with Java, rather it shows some features of its own over Java. The Listener Pattern puts such programming rules over OSGi environment, which can be considered first drawback. Apart from that, Listener Pattern doesn't suit for dynamic changes, which are expected in the OSGi ...
In 1987, Kent Beck and Ward Cunningham began experimenting with the idea of applying patterns to programming – specifically pattern languages – and presented their results at the OOPSLA conference that year. [3] [4] In the following years, Beck, Cunningham and others followed up on this work.
Design Patterns: Elements of Reusable Object-Oriented Software (1994) is a software engineering book describing software design patterns. The book was written by Erich Gamma , Richard Helm , Ralph Johnson , and John Vlissides , with a foreword by Grady Booch .
In computing, reactive programming is a declarative programming paradigm concerned with data streams and the propagation of change. With this paradigm, it is possible to express static (e.g., arrays) or dynamic (e.g., event emitters) data streams with ease, and also communicate that an inferred dependency within the associated execution model exists, which facilitates the automatic propagation ...
Null object pattern Designed to act as a default value of an object Observer pattern a.k.a. Publish/Subscribe or Event Listener. Objects register to observe an event that may be raised by another object Weak reference pattern De-couple an observer from an observable [2] Protocol stack
React is an OCaml module for functional reactive programming. Sodium is a push FRP implementation independent of a specific user interface (UI) framework for several languages, such as Java, TypeScript, and C#. [16] Dunai is a fast implementation in Haskell using Monadic Stream Functions that supports Classic and Arrowized FRP.