A dictionary containing application-specific data pertaining to the receiver.
- iOS 2.0+
- macOS 10.0+
- UIKit for Mac 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
nil if no application-specific data exists. As an example, if a method’s return value caused the exception to be raised, the return value might be available to the exception handler through this method.
Querying an NSException Object
A string used to uniquely identify the receiver.
A string containing a “human-readable” reason for the receiver.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.Learn more about using Apple's beta software