N

-name method, Identifying objects and classes

naming collisions and methods, Naming collisions

+new method, Creating, copying, and freeing objects, Creating, copying, and freeing objects

nil value, Special receivers, Constants

sending messages to, Special receivers

Nil value, Constants

NO value, Constants

-notImplemented: method, Enforcing intentions

NSArchiver class, Archiving Descendants of NSObject

NSCoder class, Archiving Descendants of NSObject–Archiving Descendants of NSObject

NSCoding protocol, Archiving Descendants of NSObject–Archiving Descendants of NSObject

NSConstantString class, Using @"string”

NSCopying protocol, Writing copy methods

NSDictionary class, A Cocoa exception handling example

NSDocument class, Archiving Descendants of NSObject

NSInvalidArgument exception, Error handling

NSInvocation class, NSObject Forwarding

NSKeyValueCoding protocol, Key-Value Coding, NSKeyValueCoding Methods–NSKeyValueCoding Methods

methods declared by, NSKeyValueCoding Methods–NSKeyValueCoding Methods

NSKeyValueCodingExceptions protocol, Handling Key Lookup Failures

NSMethodSignature class, NSObject Forwarding

NSMutableCopying protocol, Writing copy methods

NSObject class, Object Lifecycle–Writing deallocation methods, Writing copy methods, The NSObject Class–Reference counting, NSObject Forwarding–NSObject Forwarding, Archiving Descendants of NSObject–Archiving Descendants of NSObject

archiving descendants of, Archiving Descendants of NSObject–Archiving Descendants of NSObject

forwarding messages with, NSObject Forwarding–NSObject Forwarding

methods provided by, The NSObject Class–Reference counting

object life cycle, managing, Object Lifecycle–Writing deallocation methods

writing copy methods, Writing copy methods

NSUnarchiver class, Archiving Descendants of NSObject

NSUncaughtExceptionHandler function, Keywords for handling exceptions

NSZone type, Writing copy methods, Creating, copying, and freeing objects, Reference counting

+allocWithZone: method and, Creating, copying, and freeing objects

-zone method and, Reference counting

NSZoneAlloc(), Writing copy methods

NS_DURING macro, Keywords for handling exceptions

NS_ENDHANDLER macro, Keywords for handling exceptions

NS_HANDLER macro, Keywords for handling exceptions

NS_VALUERETURN macro, Keywords for handling exceptions

NS_VOIDRETURN macro, Keywords for handling exceptions

NXConstantString class, Using @"string”