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Observer pattern

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Saifuddin Merchant
Saifuddin Merchant
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Observer Pattern B Observers register with the Subject Subject notify Observers about a change and wait for notification. in state. Observers take action. Def: One-To-Many dependency between objects so that when one object changes state, all of its dependents are notified and updated automatically. Principals: Hollywood

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Observer pattern

  • 1. Observer Pattern B Observers register with the Subject Subject notify Observers about a change and wait for notification. in state. Observers take action. Def: One-To-Many dependency between objects so that when one object changes state, all of its dependents are notified and updated automatically. Principals: Hollywood