O

__OBJC__ preprocessor symbol, Preprocessor Symbols

objc_error_handler function, Object Error Handling

objc_open_typed_stream_for_file method, Archiving Descendants of Object

objc_read_types(), Archiving Descendants of Object

objc_verror(), Object Error Handling

objc_write_types(), Archiving Descendants of Object

Object class, Object Lifecycle–Writing deallocation methods, The Object Class–Archiving, Archiving Descendants of Object–Archiving Descendants of Object

archiving descendants of, Archiving Descendants of Object–Archiving Descendants of Object

methods provided by, The Object Class–Archiving

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

object qualifiers, Object Qualifiers

Objective-C, Dynamic Dispatch, Dynamic Typing, Dynamic Typing, Dynamic Loading, How Do I Get Started?, Elements of the Language–Variables, Dynamic typing, Static typing–Static typing, Type qualifiers, Compiler and Preprocessor Directives–Using @"string”, Preprocessor Symbols, Compiler Flags, Remote Messaging–Object Qualifiers, Object Lifecycle–Writing deallocation methods, Runtime Errors, Runtime Environment–Protocol Objects, Class Objects, Key-Value Coding–Handling Key Lookup Failures, Optimizing Method Calls–Optimizing Method Calls, Objective-C++, Objective-C Resources

compiler directives, Compiler and Preprocessor Directives–Using @"string”

compiler flags, Compiler Flags

dynamic loading in, Dynamic Loading

dynamic message-sending in, Dynamic Dispatch, Class Objects

dynamic typing in, Dynamic Typing, Dynamic typing

getting started with, How Do I Get Started?

intermixing C++ with, Objective-C++

key-value coding, Key-Value Coding–Handling Key Lookup Failures

language elements of, Elements of the Language–Variables

object life cycle, Object Lifecycle–Writing deallocation methods

optimizing method calls, Optimizing Method Calls–Optimizing Method Calls

preprocessor directives, Preprocessor Symbols

remote messaging, Type qualifiers, Remote Messaging–Object Qualifiers

resources for, Objective-C Resources

runtime environment, Runtime Environment–Protocol Objects

runtime errors, Runtime Errors (see runtime errors)

static typing in, Dynamic Typing, Static typing–Static typing

objects, Objects, Object Lifecycle–Writing deallocation methods, Creating an Object–Initializing classes, Writing creation methods, Sample code for initialization–Sample code for initialization, Copying an Object–Writing copy methods, Writing copy methods–Writing copy methods, Deallocating an Object, Object Error Handling–Object Error Handling, Creating, copying, and freeing objects, Creating, copying, and freeing objects, Creating, copying, and freeing objects, Identifying objects and classes–Identifying objects and classes, Testing object type, Testing inheritance and conformance, Testing inheritance and conformance, Archiving, Creating, copying, and freeing objects, Creating, copying, and freeing objects, Creating, copying, and freeing objects, Identifying objects and classes–Identifying objects and classes, Testing inheritance and conformance, Testing inheritance and conformance, Archiving, Object Forwarding–NSObject Forwarding, Manual Memory Management, Reference Counting–Retain cycles, Creating a new object, Returning an already-stored object, Replacing an already-stored object, Deallocating an object, Archiving Objects–Archiving Descendants of NSObject

archiving, Archiving, Archiving, Archiving Objects–Archiving Descendants of NSObject

methods for, Archiving, Archiving

attributes of, Objects

conformance, testing, Testing inheritance and conformance, Testing inheritance and conformance

copying, Copying an Object–Writing copy methods, Creating, copying, and freeing objects, Creating, copying, and freeing objects

creating, Creating an Object–Initializing classes, Creating, copying, and freeing objects, Creating, copying, and freeing objects, Creating a new object

reference counting and, Creating a new object

deallocating, Deallocating an Object, Creating, copying, and freeing objects, Creating, copying, and freeing objects, Deallocating an object

reference counting and, Deallocating an object

error handling, Object Error Handling–Object Error Handling

forwarding, Object Forwarding–NSObject Forwarding

identifying, Identifying objects and classes–Identifying objects and classes, Identifying objects and classes–Identifying objects and classes

inheritance, testing, Testing inheritance and conformance, Testing inheritance and conformance

initializing, Writing creation methods, Sample code for initialization–Sample code for initialization

sample code for, Sample code for initialization–Sample code for initialization

life cycle of, Object Lifecycle–Writing deallocation methods

mutable/immutable, Writing copy methods–Writing copy methods

reference counting, Reference Counting–Retain cycles

releasing memory manually, Manual Memory Management

replacing, Replacing an already-stored object

returning, Returning an already-stored object

testing types of, Testing object type

oneway type qualifier, Type qualifiers, Return Value Qualifiers

open_typed_stream_for_file(), Archiving Descendants of Object

optimizing method calls, Optimizing Method Calls–Optimizing Method Calls

OS X platform and gcc compiler, Which Objective-C?

out type qualifier, Type qualifiers, Pointer Parameter Qualifiers

overloading methods not allowed, Inheritance and Subtyping, Naming collisions

overriding methods, Inheritance and Subtyping, Declaring a category, Methods, Object Forwarding

avoid using categories, Declaring a category

implementing forwarding for classes, Object Forwarding

for root classes, Methods