objc:objc-exception-name

(objc:objc-exception-name condition)

The name of the exception an objc:objc-exception carries, a string ("NSRangeException"); for a thrown object that is not an NSException, its class name, and "nil" when nil was thrown. objc:objc-exception is signalled by the innermost objc:invoke, C function or block call running when an Objective-C exception is raised inside it. A reader of a condition of the macOS-only objc package; see the macOS GUI guide.

MY-APP> (defvar *e* (handler-case (invoke (invoke "NSArray" "array") "objectAtIndex:" 5)
                      (objc-exception (e) e)))
*E*
MY-APP> (objc-exception-name *e*)
"NSRangeException"