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Observer pattern

Index Observer pattern

The observer pattern is a software design pattern in which an object, called the subject, maintains a list of its dependents, called observers, and notifies them automatically of any state changes, usually by calling one of their methods. [1]

29 relations: Charles Petzold, Class diagram, Client–server model, Design Patterns, Dispose pattern, Entity–component–system, Event (computing), Google Books, Graphical user interface, Implicit invocation, Java (programming language), Lapsed listener problem, Library (computing), Mediator pattern, Memory leak, Method (computer programming), Microsoft Developer Network, Model–view–controller, Multiprocessing, PC Magazine, Polling (computer science), Publish–subscribe pattern, Python (programming language), Scalability, Sequence diagram, Singleton pattern, Software design pattern, Unified Modeling Language, Weak reference.

Charles Petzold

Charles Petzold (born February 2, 1953, New Brunswick, New Jersey) is an American programmer and technical author on Microsoft Windows applications.

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Class diagram

In software engineering, a class diagram in the Unified Modeling Language (UML) is a type of static structure diagram that describes the structure of a system by showing the system's classes, their attributes, operations (or methods), and the relationships among objects.

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Client–server model

The client–server model is a distributed application structure that partitions tasks or workloads between the providers of a resource or service, called servers, and service requesters, called clients.

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Design Patterns

Design Patterns: Elements of Reusable Object-Oriented Software is a software engineering book describing software design patterns.

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Dispose pattern

In object-oriented programming, the dispose pattern is a design pattern for resource management.

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Entity–component–system

Entity–component–system (ECS) is an architectural pattern that is mostly used in game development.

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Event (computing)

In computing, an event is an action or occurrence recognized by software, often originating asynchronously from the external environment, that may be handled by the software.

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Google Books

Google Books (previously known as Google Book Search and Google Print and by its codename Project Ocean) is a service from Google Inc. that searches the full text of books and magazines that Google has scanned, converted to text using optical character recognition (OCR), and stored in its digital database.

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Graphical user interface

The graphical user interface (GUI), is a type of user interface that allows users to interact with electronic devices through graphical icons and visual indicators such as secondary notation, instead of text-based user interfaces, typed command labels or text navigation.

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Implicit invocation

Implicit invocation is a term used by some authors for a style of software architecture in which a system is structured around event handling, using a form of callback.

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Java (programming language)

Java is a general-purpose computer-programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible.

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Lapsed listener problem

The lapsed listener problem is a common source of memory leaks for object-oriented programming languages, among the most common ones for garbage collected languages.

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Library (computing)

In computer science, a library is a collection of non-volatile resources used by computer programs, often for software development.

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Mediator pattern

In software engineering, the mediator pattern defines an object that encapsulates how a set of objects interact.

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Memory leak

In computer science, a memory leak is a type of resource leak that occurs when a computer program incorrectly manages memory allocations in such a way that memory which is no longer needed is not released.

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Method (computer programming)

A method in object-oriented programming (OOP) is a procedure associated with a message and an object.

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Microsoft Developer Network

Microsoft Developer Network (MSDN) is the portion of Microsoft responsible for managing the firm's relationship with developers and testers, such as hardware developers interested in the operating system (OS), and software developers developing on the various OS platforms or using the API or scripting languages of Microsoft's applications.

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Model–view–controller

Model–view–controller is commonly used for developing software that divides an application into three interconnected parts.

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Multiprocessing

Multiprocessing is the use of two or more central processing units (CPUs) within a single computer system.

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PC Magazine

PC Magazine (shortened as PCMag) is an American computer magazine published by Ziff Davis.

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Polling (computer science)

Polling, or polled operation, in computer science, refers to actively sampling the status of an external device by a client program as a synchronous activity.

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Publish–subscribe pattern

In software architecture, publish–subscribe is a messaging pattern where senders of messages, called publishers, do not program the messages to be sent directly to specific receivers, called subscribers, but instead categorize published messages into classes without knowledge of which subscribers, if any, there may be.

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Python (programming language)

Python is an interpreted high-level programming language for general-purpose programming.

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Scalability

Scalability is the capability of a system, network, or process to handle a growing amount of work, or its potential to be enlarged to accommodate that growth.

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Sequence diagram

A sequence diagram shows object interactions arranged in time sequence.

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Singleton pattern

In software engineering, the singleton pattern is a software design pattern that restricts the instantiation of a class to one object.

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Software design pattern

In software engineering, a software design pattern is a general, reusable solution to a commonly occurring problem within a given context in software design.

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Unified Modeling Language

The Unified Modeling Language (UML) is a general-purpose, developmental, modeling language in the field of software engineering, that is intended to provide a standard way to visualize the design of a system.

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Weak reference

In computer programming, a weak reference is a reference that does not protect the referenced object from collection by a garbage collector, unlike a strong reference.

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Event listeners, Observer Pattern, Observer design pattern.

References

[1] https://en.wikipedia.org/wiki/Observer_pattern

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