LispWorks Objective-C and Cocoa Interface User Guide and Reference Manual > 3 The Cocoa Interface

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3.3 Observers

Cocoa provides a mechanism called notification centers to register observers for particular events. The helper functions add-observer and remove-observer can be used to add and remove observers.


LispWorks Objective-C and Cocoa Interface User Guide and Reference Manual - 22 Dec 2009

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