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Observer pattern

In software design and software engineering, the observer pattern is a software design pattern in which an object, called the subject (also known as event source or event stream), maintains a list of its dependents, called observers (also known as event sinks), and automatically notifies them of any state changes, typically by calling one of their…

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Relationship to publish–subscribe

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Observer pattern

Nodes38
Edges37
Triples20
Avg. degree1.95
Density0.052632
Components1

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Observer pattern

Top relations

related to JavaScript · 3
Observer pattern → JavaScript, This, Without
related to overview · 3
Observer pattern → Four, Gang, The
related to Throttling and temporal decoupling · 3
Observer pattern → For, In, Rather
is a · 2
Observer pattern → potential for memory leaks, software design pattern in which an object
related to Relationship to publish–subscribe · 2
Observer pattern → However, The
related to Strong vs. weak references · 2
Observer pattern → Because, This
see also · 1
Observer pattern → Implicit

Important terminology Word statistics

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Important terminology

pattern observer observers subject state changes systems event objects references implement publish subscribe methods may object coupling used model typically

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Observer patternis asoftware design pattern in which an object0.90text
Observer patternis apotential for memory leaks0.90text
unsubscriptioninstance ofdeliberately omits concerns0.80text
notification filteringinstance ofdeliberately omits concerns0.80text
delivery guaranteesinstance ofdeliberately omits concerns0.80text
and message logginginstance ofdeliberately omits concerns0.80text
Observer patternrelated to JavaScriptJavaScript0.60section
Observer patternrelated to JavaScriptThis0.60section
Observer patternrelated to JavaScriptWithout0.60section
Observer patternrelated to overviewThe0.60section
Observer patternrelated to overviewGang0.60section
Observer patternrelated to overviewFour0.60section

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    Min side: 3
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