public interface Observable
Modifier and Type | Method and Description |
---|---|
boolean |
isRegistered(AstObserver observer)
Was this observer registered?
Note that equals is used to determine if the given observer was registered.
|
void |
register(AstObserver observer)
Register an observer.
|
void |
unregister(AstObserver observer)
Unregister an observer.
|
void register(AstObserver observer)
void unregister(AstObserver observer)
boolean isRegistered(AstObserver observer)
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