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# NSExceptionHandlerDelegate

The `NSExceptionHandlerDelegate` informal protocol describes methods that [`NSExceptionHandler`](/documentation/ExceptionHandling/NSExceptionHandler)
objects call on their delegates when exceptions occur. An [`NSExceptionHandler`](/documentation/ExceptionHandling/NSExceptionHandler)
object does not need to have a delegate. When one does, these delegate methods are
asked to approve exception handling and logging for each monitored [`NSExceptionHandler`](/documentation/ExceptionHandling/NSExceptionHandler)
object.

## Topics

### Logging and handling exceptions

  <doc://com.apple.documentation/documentation/ObjectiveC/NSObject-swift.class/exceptionHandler(_:shouldHandle:mask:)>

  <doc://com.apple.documentation/documentation/ObjectiveC/NSObject-swift.class/exceptionHandler(_:shouldLogException:mask:)>


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