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Leopard Reference Library
Cocoa is an object-oriented application environment designed for developing Mac OS X native applications. The Cocoa frameworks support rapid development and high productivity. Cocoa provides developers starting new Mac OS X projects the fastest way to full-featured implementations. Applications from other platforms can also be brought to Mac OS X quickly using Cocoa.
A guided introduction and learning path for developers new to Cocoa.   Essential information for developers using Objective-C.   Objective-C API references organized by framework.
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NSCondition Class Reference (HTML) (PDF)
Describes a pthread-style condition variable and associated mutex lock.
 Process Management Reference 2008-09-09
NSConditionLock Class Reference (HTML) (PDF)
Describes an integer-based condition for use in thread locking.
 Process Management Reference 2007-01-15
NSConnection Class Reference (HTML) (PDF)
Describes an object that manages communication between objects in different threads.
 Interapplication Communication Reference 2008-02-08
NSControl Class Reference (HTML) (PDF)
Describes the interface for views that respond to user actions by sending action messages.
 User Experience Reference 2008-10-15
NSController Class Reference (HTML) (PDF)
Describes the interface for controllers used with Cocoa bindings.
 Data Management, Design Guidelines Reference 2007-04-02
NSCopying Protocol Reference (HTML) (PDF)
Describes the interface for providing immutable duplicates of objects.
 Design Guidelines, Objective-C Language Reference 2006-05-23
NSCountCommand Class Reference (HTML) (PDF)
Describes the class used to count the number of objects of a specified class in the specified object container.
 Scripting & Automation Reference 2006-05-23
NSCountedSet Class Reference (HTML) (PDF)
Describes an unordered collection of possibly identical elements.
 Data Management Reference 2009-05-06
NSCreateCommand Class Reference (HTML) (PDF)
Describes the class used to create a specified scriptable object.
 Scripting & Automation Reference 2006-05-23
NSCursor Class Reference (HTML) (PDF)
Describes the appearance of the user interface cursor.
 User Experience Reference 2009-01-06
NSCustomImageRep Class Reference (HTML) (PDF)
Describes an object that supports drawing an image using a custom data format.
 Graphics & Imaging Reference 2007-01-19
NSData Class Reference (HTML) (PDF)
Describes an immutable byte buffer.
 Data Management Reference 2009-05-06
NSDate - Natural language date parsing in early Leopard releases (HTML)
QA1581: Acknowledges a regression in +dateWithNaturalLanguageString: behavior of NSDate which is fixed as of 10.5.2.
 User Experience Technical Q&As 2008-02-27
NSDate Class Reference (HTML) (PDF)
Describes a single point in time.
 Data Management Reference 2008-10-15
NSDateComponents Class Reference (HTML) (PDF)
Describes the components of a date.
 Data Management Reference 2008-10-15
NSDateFormatter Class Reference (HTML) (PDF)
Describes a date formatter.
 Data Management, Internationalization, User Experience Reference 2008-11-19
NSDatePicker Class Reference (HTML) (PDF)
Describes a control for displaying and editing a date.
 User Experience Reference 2008-06-09
NSDatePickerCell Class Reference (HTML) (PDF)
Describes a cell for displaying and editing a date.
 User Experience Reference 2008-06-09
NSDecimalNumber Class Reference (HTML) (PDF)
Describes a decimal number.
 Data Management Reference 2007-10-31
NSDecimalNumberBehaviors Protocol Reference (HTML) (PDF)
Describes the interface for controlling the behavior of NSDecimalNumber objects.
 Data Management Reference 2006-05-23
NSDecimalNumberHandler Class Reference (HTML) (PDF)
Describes an object that specifies decimal number rounding and error handling.
 Data Management Reference 2007-04-30
NSDeleteCommand Class Reference (HTML) (PDF)
Describes the class used to delete a specified scriptable object or objects.
 Scripting & Automation Reference 2006-05-23
NSDeserializer Class Reference (HTML) (PDF)
Describes a deprecated technology replaced by the NSPropertyListSerialization class.
 Objective-C Language Reference 2006-05-23
NSDictionary Class Reference (HTML) (PDF)
Describes an immutable collection of key-value pairs.
 Data Management, Design Guidelines Reference 2009-04-08
NSDictionaryController Class Reference (HTML) (PDF)
Describes a Cocoa bindings-compatible manager of a dictionary.
 Data Management, Design Guidelines Reference 2008-06-05
NSDictionaryControllerKeyValuePair Protocol Reference (HTML) (PDF)
Describes the interface for managing key-value pairs used by a dictionary controller.
 Data Management Reference 2008-06-05
NSDirectoryEnumerator Class Reference (HTML) (PDF)
Describes the facility for enumerating the contents of a directory.
 File Management Reference 2008-10-15
NSDistantObject Class Reference (HTML) (PDF)
Describes the proxy for an object in another application or thread.
 Interapplication Communication Reference 2007-01-19
NSDistantObjectRequest Class Reference (HTML) (PDF)
Describes an object that handles communication requests from other processes.
 Interapplication Communication Reference 2007-01-22
NSDistributedLock Class Reference (HTML) (PDF)
Describes a mutex lock that spans multiple processes.
 Process Management Reference 2007-01-22
NSDistributedNotificationCenter Class Reference (HTML) (PDF)
Describes an object that synchronously broadcasts notifications to other tasks.
 Events & Other Input, Interapplication Communication Reference 2007-04-01
NSDockTile Class Reference (HTML) (PDF)
Describes the interface for customizing an application's dock tiles
 User Experience Reference 2009-03-04
NSDocument Class Reference (HTML) (PDF)
Describes the interface for managing content using Cocoa's document system.
 Design Guidelines Reference 2009-01-06
NSDocumentController Class Reference (HTML) (PDF)
Describes an object for managing documents.
 Design Guidelines Reference 2008-10-15
NSDraggingDestination Protocol Reference (HTML) (PDF)
Describes the interface for objects receiving dragged images.
 Events & Other Input, Interapplication Communication Reference 2007-03-01
NSDraggingInfo Protocol Reference (HTML) (PDF)
Describes the interface for supplying useful information to a dragging destination.
 Events & Other Input, Interapplication Communication Reference 2007-03-01
NSDraggingSource Protocol Reference (HTML) (PDF)
Describes the interface for receiving messages when providing a dragged image.
 Events & Other Input, Interapplication Communication Reference 2007-03-01
NSDrawer Class Reference (HTML) (PDF)
Describes a retractable user interface element that displays view objects.
 User Experience Reference 2006-05-23
NSEditor Protocol Reference (HTML) (PDF)
Describes the interface used to commit or discard edits.
 Data Management Reference 2006-05-23
NSEditorRegistration Protocol Reference (HTML) (PDF)
Describes the interface for receiving uncommitted-change messages from Cocoa bindings-compatible views.
 Data Management Reference 2006-05-23
NSEntityDescription Class Reference (HTML) (PDF)
Describes the class used to specify entities in a Core Data managed object model.
 Objective-C Language Reference 2008-02-08
NSEntityMapping Class Reference (HTML) (PDF)
Describes the mapping of an entity in a Core Data migration.
 Data Management Reference 2007-05-22
NSEntityMigrationPolicy Class Reference (HTML) (PDF)
Describes the Core Data class used to customize the migration process for an entity mapping.
 Data Management Reference 2007-05-22
NSEnumerator Class Reference (HTML) (PDF)
Describes a facility for sequentially returning the elements of a collection.
 Data Management Reference 2007-02-23
NSEPSImageRep Class Reference (HTML) (PDF)
Describes an object that draws an image from encapsulated PostScript data.
 Graphics & Imaging Reference 2007-01-22
NSError Class Reference (HTML) (PDF)
Describes a representation of a runtime error.
 Design Guidelines Reference 2009-05-06
NSErrorRecoveryAttempting Protocol Reference (HTML) (PDF)
Describes the interface for attempting recovery from runtime errors.
 Design Guidelines, User Experience Reference 2007-02-23
NSEvent Class Reference (HTML) (PDF)
Describes an input action such as a mouse click.
 Events & Other Input Reference 2009-02-04
NSException Class Reference (HTML) (PDF)
Describes an exceptional condition.
 Objective-C Language Reference 2007-01-30
NSExceptionHandler Class Reference (HTML) (PDF)
Describes a facility for monitoring and debugging exceptional conditions.
 Objective-C Language Reference 2006-10-03
NSExistsCommand Class Reference (HTML) (PDF)
Describes the class used to determine whether a specified scriptable object exists.
 Scripting & Automation Reference 2006-05-23
NSExpression Class Reference (HTML) (PDF)
Describes a predicate expression.
 Data Management Reference 2008-10-15
NSFastEnumeration Protocol Reference (HTML) (PDF)
Describes the interface for supporting the Objective-C 2.0 fast-enumeration feature.
 Objective-C Language Reference 2007-06-27
NSFetchedPropertyDescription Class Reference (HTML) (PDF)
Describes a fetched property of an entity in a Core Data managed object model.
 Objective-C Language Reference 2006-07-11
NSFetchRequest Class Reference (HTML) (PDF)
Describes the class used to describe search criteria used to retrieve data from a persistent store in Core Data.
 Data Management Reference 2008-02-08
NSFetchRequestExpression Class Reference (HTML) (PDF)
Describes a Core Data fetch request as an expression.
 Data Management Reference 2006-07-16
NSFileHandle Class Reference (HTML) (PDF)
Describes an object for accessing files or communication channels.
 File Management Reference 2008-10-15
NSFileManager Class Reference (HTML) (PDF)
Describes an object that performs file-system operations.
 File Management, Resource Management Reference 2008-10-15
NSFileWrapper Class Reference (HTML) (PDF)
Describes a representation of a file-system node.
 Data Management, File Management, Resource Management Reference 2008-10-15
NSFont Class Reference (HTML) (PDF)
Describes a representation of a font.
 Text & Fonts Reference 2007-06-08
NSFontAttributeExplorer (HTML) (DMG) (ZIP)
Demonstrates how to gather and display various metric information for installed fonts using NSFont.
 Text & Fonts Sample Code 2006-10-26
NSFontDescriptor Class Reference (HTML) (PDF)
Describes a dictionary that fully specifies a font.
 Objective-C Language Reference 2008-03-11
NSFontManager Class Reference (HTML) (PDF)
Describes an object for controlling font conversion.
 Text & Fonts Reference 2007-04-06
NSFontPanel Class Reference (HTML) (PDF)
Describes the panel for font selection.
 User Experience Reference 2007-04-06
NSFontPanelValidation Protocol Reference (HTML) (PDF)
Describes the interface for validating fonts.
 User Experience Reference 2007-04-06
NSForm Class Reference (HTML) (PDF)
Describes a vertical matrix of NSFormCell objects.
 User Experience Reference 2006-05-23
NSFormatter Class Reference (HTML) (PDF)
Describes the interface for formatter objects.
 Data Management, User Experience Reference 2007-07-09
NSFormCell Class Reference (HTML) (PDF)
Describes a title and text entry field in an NSForm object.
 User Experience Reference 2006-05-23
NSGarbageCollector Class Reference (HTML) (PDF)
Describes the garbage collector.
 Objective-C Language Reference 2008-10-15
NSGetCommand Class Reference (HTML) (PDF)
Describes the class used to get the specified value or object from the specified scriptable object.
 Scripting & Automation Reference 2006-05-23
NSGLImage (HTML) (DMG) (ZIP)
Deprecated - Demonstrates how to texture in OpenGL with an NSImage and/or NSBitmapImageRep
 Games, Graphics & Imaging Sample Code 2004-12-01
NSGlyphGenerator Class Reference (HTML) (PDF)
Describes a glyph generator for text layout.
 Text & Fonts Reference 2006-05-23
NSGlyphInfo Class Reference (HTML) (PDF)
Describes a glyph attribute value in an attributed string.
 Text & Fonts Reference 2007-03-01
NSGlyphStorage Protocol Reference (HTML) (PDF)
Describes the interface between a glyph generator and glyph storage.
 Text & Fonts Reference 2009-01-06
NSGradient Class Reference (HTML) (PDF)
Describes a color gradient to use when drawing.
 Graphics & Imaging Reference 2009-01-06
NSGraphicsContext Class Reference (HTML) (PDF)
Describes a destination for drawing operations.
 Graphics & Imaging Reference 2007-03-01
NSHashTable Class Reference (HTML) (PDF)
Describes a mutable unordered collection of distinct elements that may use weak references.
 Data Management Reference 2007-06-26
NSHelpManager Class Reference (HTML) (PDF)
Describes an application-level help system.
 Events & Other Input, Resource Management, User Experience Reference 2009-02-04
NSHost Class Reference (HTML) (PDF)
Describes a representation of a network host.
 Networking, Process Management Reference 2007-03-24
NSHTTPCookie Class Reference (HTML) (PDF)
Describes an opaque set of data that represents state or configuration.
 Internet & Web, Networking Reference 2008-11-13
NSHTTPCookieStorage Class Reference (HTML) (PDF)
Describes a collection of cookies shared across all applications.
 Internet & Web, Networking Reference 2006-05-23
NSHTTPURLResponse Class Reference (HTML) (PDF)
Describes a response to an HTTP request.
 Internet & Web, Networking Reference 2006-05-23
NSIgnoreMisspelledWords Protocol Reference (HTML) (PDF)
Describes the interface for a spelling checker's ignored words list.
 Text & Fonts Reference 2006-05-23
NSImage Class Reference (HTML) (PDF)
Describes a graphical image that includes facilities for drawing and compositing.
 Graphics & Imaging Reference 2009-01-06
NSImageCell Class Reference (HTML) (PDF)
Describes an object that displays an image in a frame, usually in a control.
 User Experience Reference 2009-01-06
NSImageRep Class Reference (HTML) (PDF)
Describes the interface for managing and drawing image data.
 Graphics & Imaging Reference 2009-01-06
NSImageView Class Reference (HTML) (PDF)
Describes a view that displays an image.
 User Experience Reference 2007-01-22
NSIndexPath Class Reference (HTML) (PDF)
Describes a path to a node in a tree.
 Data Management Reference 2008-10-15
NSIndexSet Class Reference (HTML) (PDF)
Describes an immutable collection of unique unsigned integers.
 Data Management Reference 2007-03-24
NSIndexSpecifier Class Reference (HTML) (PDF)
Describes the position of an object in a collection.
 Scripting & Automation Reference 2007-04-01
NSInputManager Class Reference (HTML) (PDF)
Describes the class used by text views to communicate with the text input management system.
 Events & Other Input, Text & Fonts, User Experience Reference 2007-04-01
NSInputServer Class Reference (HTML) (PDF)
Describes the class that interprets text view events and communicates them to the text input management system.
 Events & Other Input, Text & Fonts, User Experience Reference 2007-04-01
NSInputServerMouseTracker Protocol Reference (HTML) (PDF)
Describes the protocol implemented by text input servers to handle mouse events.
 Events & Other Input, Text & Fonts, User Experience Reference 2007-04-02
NSInputServiceProvider Protocol Reference (HTML) (PDF)
Describes the protocol implemented by text input servers to handle application and text field events.
 Events & Other Input, Text & Fonts, User Experience Reference 2007-04-02
NSInputStream Class Reference (HTML) (PDF)
Describes a read-only data stream.
 Data Management, File Management, Networking Reference 2007-04-05
NSInvocation Class Reference (HTML) (PDF)
Describes an Objective-C message for use in store-and-forward operations.
 Interapplication Communication, Objective-C Language Reference 2008-10-15
NSInvocationOperation Class Reference (HTML) (PDF)
Describes a nonconcurrent operation for executing a single encapsulated task.
 Interapplication Communication, Objective-C Language Reference 2007-04-12
NSKeyedArchiver Class Reference (HTML) (PDF)
Describes the facility for encoding objects and scalar values identified by keys.
 Data Management Reference 2008-10-15
NSKeyedUnarchiver Class Reference (HTML) (PDF)
Describes an object that extracts the contents of an archive created by the NSKeyedArchiver class.
 Data Management Reference 2008-10-15
NSKeyValueBindingCreation Protocol Reference (HTML) (PDF)
Describes the interface for managing Cocoa bindings.
 Data Management Reference 2007-04-10
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