Classes
Protocols
Constants
Functions
Macros
Types
Variables

### Classes

NSAffineTransform
NSAppleEventDescriptor
NSAppleEventManager
NSAppleScript
NSArchiver
NSArray
NSAssertionHandler
NSAttributedString
NSAutoreleasePool
NSBackgroundActivityScheduler
NSBlockOperation
NSBundle
NSByteCountFormatter
NSCache
NSCachedURLResponse
NSCalendar
NSCalendarDate
NSCharacterSet
NSClassDescription
NSCoder
NSComparisonPredicate
NSCompoundPredicate
NSCondition
NSConditionLock
NSConnection
NSCountedSet
NSData
NSDate
NSDateComponents
NSDateComponentsFormatter
NSDateFormatter
NSDateInterval
NSDateIntervalFormatter
NSDecimalNumber
NSDecimalNumberHandler
NSDeserializer
NSDictionary
NSDimension
NSDirectoryEnumerator
NSDistantObject
NSDistributedLock
NSDistributedNotificationCenter
NSEnergyFormatter
NSEnumerator
NSError
NSException
NSExpression
NSExtensionContext
NSExtensionItem
NSFileAccessIntent
NSFileCoordinator
NSFileHandle
NSFileManager
NSFileVersion
NSFileWrapper
NSFormatter
NSGarbageCollector
NSHTTPCookie
NSHTTPCookieStorage
NSHTTPURLResponse
NSHashTable
NSHost
NSISO8601DateFormatter
NSIndexPath
NSIndexSet
NSInputStream
NSInvocation
NSInvocationOperation
NSItemProvider
NSItemProviderReadingWriting
NSJSONSerialization
NSKeyedArchiver
NSKeyedUnarchiver
NSLengthFormatter
NSLinguisticTagger
NSLocale
NSLock
NSMapTable
NSMassFormatter
NSMeasurement
NSMeasurementFormatter
NSMessagePort
NSMessagePortNameServer
NSMetadataItem
NSMetadataQuery
NSMetadataQueryAttributeValueTuple
NSMetadataQueryResultGroup
NSMethodSignature
NSMutableArray
NSMutableAttributedString
NSMutableCharacterSet
NSMutableData
NSMutableDictionary
NSMutableIndexSet
NSMutableOrderedSet
NSMutableSet
NSMutableString
NSMutableURLRequest
NSNetService
NSNetServiceBrowser
NSNotification
NSNotificationCenter
NSNotificationQueue
NSNull
NSNumber
NSNumberFormatter
NSObject
NSObjectScripting
NSOperation
NSOperationQueue
NSOrderedSet
NSOrthography
NSOutputStream
NSPersonNameComponents
NSPersonNameComponentsFormatter
NSPipe
NSPointerArray
NSPointerFunctions
NSPort
NSPortCoder
NSPortMessage
NSPortNameServer
NSPredicate
NSProcessInfo
NSProgress
NSPropertyListSerialization
NSProtocolChecker
NSProxy
NSRecursiveLock
NSRegularExpression
NSRunLoop
NSScanner
NSScriptClassDescription
NSScriptCoercionHandler
NSScriptCommand
NSScriptCommandDescription
NSScriptExecutionContext
NSScriptKeyValueCoding
NSScriptObjectSpecifiers
NSScriptStandardSuiteCommands
NSScriptSuiteRegistry
NSSerializer
NSSet
NSSocketPort
NSSocketPortNameServer
NSSortDescriptor
NSSpellServer
NSStream
NSString
NSTask
NSTextCheckingResult
NSThread
NSTimeZone
NSTimeZoneDetail
NSTimer
NSURL
NSURLAuthenticationChallenge
NSURLCache
NSURLComponents
NSURLConnection
NSURLCredential
NSURLCredentialStorage
NSURLDownload
NSURLHandle
NSURLProtectionSpace
NSURLProtocol
NSURLQueryItem
NSURLRequest
NSURLResponse
NSURLSession
NSURLSessionConfiguration
NSURLSessionDataTask
NSURLSessionDownloadTask
NSURLSessionStreamTask
NSURLSessionTask
NSURLSessionUploadTask
NSUUID
NSUbiquitousKeyValueStore
NSUnarchiver
NSUndoManager
NSUnit
NSUnitAcceleration
NSUnitAngle
NSUnitArea
NSUnitConcentrationMass
NSUnitConverter
NSUnitConverterLinear
NSUnitDispersion
NSUnitDuration
NSUnitElectricCharge
NSUnitElectricCurrent
NSUnitElectricPotentialDifference
NSUnitElectricResistance
NSUnitEnergy
NSUnitFrequency
NSUnitFuelEfficiency
NSUnitIlluminance
NSUnitLength
NSUnitMass
NSUnitPower
NSUnitPressure
NSUnitSpeed
NSUnitTemperature
NSUnitVolume
NSUserActivity
NSUserDefaults
NSUserNotification
NSUserNotificationCenter
NSUserScriptTask
NSValue
NSValueTransformer
NSXMLDTD
NSXMLDTDNode
NSXMLDocument
NSXMLElement
NSXMLNode
NSXMLParser
NSXPCConnection
NSXPCInterface
NSXPCListener
NSXPCListenerEndpoint
NXConstantString

### Protocols

<GSLogDelegate>
<NSCacheDelegate>
<NSCoding>
<NSCopying>
<NSDecimalNumberBehaviors>
<NSDiscardableContent>
<NSExtensionRequestHandling>
<NSFastEnumeration>
<NSFileManagerDelegate>
<NSFilePresenter>
<NSItemProviderReading>
<NSItemProviderWriting>
<NSLocking>
<NSMetadataQueryDelegate>
<NSMutableCopying>
<NSNetServiceBrowserDelegate>
<NSNetServiceDelegate>
<NSObjCTypeSerializationCallBack>
<NSObject>
<NSProgressReporting>
<NSSecureCoding>
<NSStreamDelegate>
<NSURLAuthenticationChallengeSender>
<NSURLConnectionDataDelegate>
<NSURLHandleClient>
<NSURLProtocolClient>
<NSURLSessionDataDelegate>
<NSURLSessionDelegate>
<NSURLSessionDownloadDelegate>
<NSURLSessionTaskDelegate>
<NSUserNotificationCenterDelegate>
<NSXMLParserDelegate>
<NSXPCListenerDelegate>
<NSXPCProxyCreating>
<RunLoopEvents>
(GSTraceLocks)
(NSComparisonMethods)
(NSConnectionDelegate)
(NSErrorRecoveryAttempting)
(NSFileManagerDelegate)
(NSFileManagerHandler)
(NSFilePresenter)
(NSKeyValueCoding)
(NSMetadataQueryDelegate)
(NSNetServiceBrowserDelegateMethods)
(NSNetServiceDelegateMethods)
(NSSpellServerDelegate)
(NSStreamDelegate)
(NSUserNotificationCenterDelegateMethods)
(RunLoopEvents)
(TimedPerformers)

### Constants

GSCACertificateFilePath
GSConfigDomain
GSFileHandleConnectCompletionNotification
GSFileHandleNotificationError
GSFileHandleWriteCompletionNotification
GSHTTPPropertyCertificateFileKey
GSHTTPPropertyKeyFileKey
GSHTTPPropertyLocalHostKey
GSHTTPPropertyMethodKey
GSHTTPPropertyPasswordKey
GSHTTPPropertyProxyHostKey
GSHTTPPropertyProxyPortKey
GSLocale
GSNetworkNotificationCenterType
GSPublicNotificationCenterType
GSTLSCAFile
GSTLSCertificateFile
GSTLSCertificateKeyFile
GSTLSCertificateKeyPassword
GSTLSDebug
GSTLSIssuers
GSTLSOwners
GSTLSPriority
GSTLSRemoteHosts
GSTLSRevokeFile
GSTLSServerName
GSTLSVerify
NSAMPMDesignation
NSArgumentDomain
NSAssertionHandlerKey
NSBuddhistCalendar
NSBundleDidLoadNotification
NSCalendarIdentifierBuddhist
NSCalendarIdentifierChinese
NSCalendarIdentifierCoptic
NSCalendarIdentifierEthiopicAmeteAlem
NSCalendarIdentifierEthiopicAmeteMihret
NSCalendarIdentifierGregorian
NSCalendarIdentifierHebrew
NSCalendarIdentifierISO8601
NSCalendarIdentifierIndian
NSCalendarIdentifierIslamic
NSCalendarIdentifierIslamicCivil
NSCalendarIdentifierIslamicTabular
NSCalendarIdentifierIslamicUmmAlQura
NSCalendarIdentifierJapanese
NSCalendarIdentifierPersian
NSCalendarIdentifierRepublicOfChina
NSCharacterConversionException
NSChineseCalendar
NSClassDescriptionNeededForClassNotification
NSConnectionDidDieNotification
NSConnectionDidInitializeNotification
NSConnectionLocalCount
NSConnectionProxyCount
NSConnectionRepliesReceived
NSConnectionRepliesSent
NSConnectionReplyMode
NSConnectionRequestsReceived
NSConnectionRequestsSent
NSCurrencyString
NSCurrencySymbol
NSCurrentLocaleDidChangeNotification
NSDateFormatString
NSDateTimeOrdering
NSDecimalDigits
NSDecimalSeparator
NSDestinationInvalidException
NSEarlierTimeDesignations
NSEdgeInsetsZero
NSErrorFailingURLStringKey
NSExtensionHostDidBecomeActiveNotification
NSExtensionHostDidEnterBackgroundNotification
NSExtensionHostWillEnterForegroundNotification
NSExtensionHostWillResignActiveNotification
NSExtensionItemAttachmentsKey
NSExtensionItemAttributedContentTextKey
NSExtensionItemAttributedTitleKey
NSExtensionItemsAndErrorsKey
NSExtensionJavaScriptFinalizeArgumentKey
NSExtensionJavaScriptPreprocessingResultsKey
NSFailedAuthenticationException
NSFileAppendOnly
NSFileCreationDate
NSFileDeviceIdentifier
NSFileExtensionHidden
NSFileGroupOwnerAccountID
NSFileGroupOwnerAccountName
NSFileHFSCreatorCode
NSFileHFSTypeCode
NSFileHandleConnectionAcceptedNotification
NSFileHandleDataAvailableNotification
NSFileHandleNotificationDataItem
NSFileHandleNotificationFileHandleItem
NSFileHandleNotificationMonitorModes
NSFileHandleOperationException
NSFileHandleReadCompletionNotification
NSFileHandleReadToEndOfFileCompletionNotification
NSFileImmutable
NSFileModificationDate
NSFileOwnerAccountID
NSFileOwnerAccountName
NSFilePathErrorKey
NSFilePosixPermissions
NSFileReferenceCount
NSFileSize
NSFileSystemFileNumber
NSFileSystemFreeNodes
NSFileSystemFreeSize
NSFileSystemNodes
NSFileSystemNumber
NSFileSystemSize
NSFileType
NSFileTypeBlockSpecial
NSFileTypeCharacterSpecial
NSFileTypeDirectory
NSFileTypeFifo
NSFileTypeRegular
NSFileTypeSocket
NSFileTypeSymbolicLink
NSFileTypeUnknown
NSFormalName
NSGenericException
NSGlobalDomain
NSGrammarCorrections
NSGrammarRange
NSGrammarUserDescription
NSGregorianCalendar
NSHTTPCookieComment
NSHTTPCookieCommentURL
NSHTTPCookieDiscard
NSHTTPCookieDomain
NSHTTPCookieExpires
NSHTTPCookieManagerAcceptPolicyChangedNotification
NSHTTPCookieManagerCookiesChangedNotification
NSHTTPCookieMaximumAge
NSHTTPCookieName
NSHTTPCookieOriginURL
NSHTTPCookiePath
NSHTTPCookiePort
NSHTTPCookieSecure
NSHTTPCookieValue
NSHTTPCookieVersion
NSHTTPPropertyErrorPageDataKey
NSHTTPPropertyRedirectionHeadersKey
NSHTTPPropertyServerHTTPVersionKey
NSHTTPPropertyStatusCodeKey
NSHTTPPropertyStatusReasonKey
NSHebrewCalendar
NSHourNameDesignations
NSISO8601Calendar
NSInconsistentArchiveException
NSIndianCalendar
NSIntHashCallBacks
NSIntMapKeyCallBacks
NSIntMapValueCallBacks
NSIntegerHashCallBacks
NSIntegerMapKeyCallBacks
NSIntegerMapValueCallBacks
NSInternalInconsistencyException
NSInternationalCurrencyString
NSInvalidArchiveOperationException
NSInvalidArgumentException
NSInvalidReceivePortException
NSInvalidSendPortException
NSInvalidUnarchiveOperationException
NSInvocationOperationCancelledException
NSInvocationOperationVoidResultException
NSIsNilTransformerName
NSIsNotNilTransformerName
NSIslamicCalendar
NSIslamicCivilCalendar
NSItemProviderErrorDomain
NSItemProviderPreferredImageSizeKey
NSJapaneseCalendar
NSKeyValueChangeIndexesKey
NSKeyValueChangeKindKey
NSKeyValueChangeNewKey
NSKeyValueChangeNotificationIsPriorKey
NSKeyValueChangeOldKey
NSLanguageCode
NSLanguageName
NSLaterTimeDesignations
NSLoadedClasses
NSLocalNotificationCenterType
NSLocaleAlternateQuotationBeginDelimiterKey
NSLocaleAlternateQuotationEndDelimiterKey
NSLocaleCalendar
NSLocaleCalendarIdentifier
NSLocaleCollationIdentifier
NSLocaleCollatorIdentifier
NSLocaleCountryCode
NSLocaleCurrencyCode
NSLocaleCurrencySymbol
NSLocaleDecimalSeparator
NSLocaleExemplarCharacterSet
NSLocaleGroupingSeparator
NSLocaleIdentifier
NSLocaleLanguageCode
NSLocaleMeasurementSystem
NSLocaleQuotationBeginDelimiterKey
NSLocaleQuotationEndDelimiterKey
NSLocaleScriptCode
NSLocaleUsesMetricSystem
NSLocaleVariantCode
NSLocalizedDescriptionKey
NSLocalizedFailureReasonErrorKey
NSLocalizedRecoveryOptionsErrorKey
NSLocalizedRecoverySuggestionErrorKey
NSMallocException
NSMatchingAnchored
NSMatchingCompleted
NSMatchingHitEnd
NSMatchingInternalError
NSMatchingProgress
NSMatchingReportCompletion
NSMatchingReportProgress
NSMatchingRequiredEnd
NSMatchingWithTransparentBounds
NSMatchingWithoutAnchoringBounds
NSMetadataItemAcquisitionMakeKey
NSMetadataItemAcquisitionModelKey
NSMetadataItemAlbumKey
NSMetadataItemAltitudeKey
NSMetadataItemApertureKey
NSMetadataItemAppleLoopDescriptorsKey
NSMetadataItemAppleLoopsKeyFilterTypeKey
NSMetadataItemAppleLoopsLoopModeKey
NSMetadataItemAppleLoopsRootKeyKey
NSMetadataItemApplicationCategoriesKey
NSMetadataItemAttributeChangeDateKey
NSMetadataItemAudiencesKey
NSMetadataItemAudioBitRateKey
NSMetadataItemAudioChannelCountKey
NSMetadataItemAudioEncodingApplicationKey
NSMetadataItemAudioSampleRateKey
NSMetadataItemAudioTrackNumberKey
NSMetadataItemAuthorAddressesKey
NSMetadataItemAuthorEmailAddressesKey
NSMetadataItemAuthorsKey
NSMetadataItemBitsPerSampleKey
NSMetadataItemCFBundleIdentifierKey
NSMetadataItemCameraOwnerKey
NSMetadataItemCityKey
NSMetadataItemCodecsKey
NSMetadataItemColorSpaceKey
NSMetadataItemCommentKey
NSMetadataItemComposerKey
NSMetadataItemContactKeywordsKey
NSMetadataItemContentCreationDateKey
NSMetadataItemContentModificationDateKey
NSMetadataItemContentTypeKey
NSMetadataItemContentTypeTreeKey
NSMetadataItemContributorsKey
NSMetadataItemCopyrightKey
NSMetadataItemCountryKey
NSMetadataItemCoverageKey
NSMetadataItemCreatorKey
NSMetadataItemDateAddedKey
NSMetadataItemDeliveryTypeKey
NSMetadataItemDescriptionKey
NSMetadataItemDirectorKey
NSMetadataItemDisplayNameKey
NSMetadataItemDownloadedDateKey
NSMetadataItemDueDateKey
NSMetadataItemDurationSecondsKey
NSMetadataItemEXIFGPSVersionKey
NSMetadataItemEXIFVersionKey
NSMetadataItemEditorsKey
NSMetadataItemEmailAddressesKey
NSMetadataItemEncodingApplicationsKey
NSMetadataItemExecutableArchitecturesKey
NSMetadataItemExecutablePlatformKey
NSMetadataItemExposureModeKey
NSMetadataItemExposureProgramKey
NSMetadataItemExposureTimeSecondsKey
NSMetadataItemExposureTimeStringKey
NSMetadataItemFNumberKey
NSMetadataItemFSContentChangeDateKey
NSMetadataItemFSCreationDateKey
NSMetadataItemFSNameKey
NSMetadataItemFSSizeKey
NSMetadataItemFinderCommentKey
NSMetadataItemFlashOnOffKey
NSMetadataItemFocalLength35mmKey
NSMetadataItemFocalLengthKey
NSMetadataItemFontsKey
NSMetadataItemGPSAreaInformationKey
NSMetadataItemGPSDOPKey
NSMetadataItemGPSDateStampKey
NSMetadataItemGPSDestBearingKey
NSMetadataItemGPSDestDistanceKey
NSMetadataItemGPSDestLatitudeKey
NSMetadataItemGPSDestLongitudeKey
NSMetadataItemGPSDifferentalKey
NSMetadataItemGPSMapDatumKey
NSMetadataItemGPSMeasureModeKey
NSMetadataItemGPSProcessingMethodKey
NSMetadataItemGPSStatusKey
NSMetadataItemGPSTrackKey
NSMetadataItemGenreKey
NSMetadataItemHasAlphaChannelKey
NSMetadataItemHeadlineKey
NSMetadataItemISOSpeedKey
NSMetadataItemIdentifierKey
NSMetadataItemImageDirectionKey
NSMetadataItemInformationKey
NSMetadataItemInstantMessageAddressesKey
NSMetadataItemInstructionsKey
NSMetadataItemIsApplicationManagedKey
NSMetadataItemIsGeneralMIDISequenceKey
NSMetadataItemIsLikelyJunkKey
NSMetadataItemIsUbiquitousKey
NSMetadataItemKeySignatureKey
NSMetadataItemKeywordsKey
NSMetadataItemKindKey
NSMetadataItemLanguagesKey
NSMetadataItemLastUsedDateKey
NSMetadataItemLatitudeKey
NSMetadataItemLayerNamesKey
NSMetadataItemLensModelKey
NSMetadataItemLongitudeKey
NSMetadataItemLyricistKey
NSMetadataItemMaxApertureKey
NSMetadataItemMediaTypesKey
NSMetadataItemMeteringModeKey
NSMetadataItemMusicalGenreKey
NSMetadataItemMusicalInstrumentCategoryKey
NSMetadataItemMusicalInstrumentNameKey
NSMetadataItemNamedLocationKey
NSMetadataItemNumberOfPagesKey
NSMetadataItemOrganizationsKey
NSMetadataItemOrientationKey
NSMetadataItemOriginalFormatKey
NSMetadataItemOriginalSourceKey
NSMetadataItemPageHeightKey
NSMetadataItemPageWidthKey
NSMetadataItemParticipantsKey
NSMetadataItemPathKey
NSMetadataItemPerformersKey
NSMetadataItemPhoneNumbersKey
NSMetadataItemPixelCountKey
NSMetadataItemPixelHeightKey
NSMetadataItemPixelWidthKey
NSMetadataItemProducerKey
NSMetadataItemProfileNameKey
NSMetadataItemProjectsKey
NSMetadataItemPublishersKey
NSMetadataItemRecipientAddressesKey
NSMetadataItemRecipientEmailAddressesKey
NSMetadataItemRecipientsKey
NSMetadataItemRecordingDateKey
NSMetadataItemRecordingYearKey
NSMetadataItemRedEyeOnOffKey
NSMetadataItemResolutionHeightDPIKey
NSMetadataItemResolutionWidthDPIKey
NSMetadataItemRightsKey
NSMetadataItemSecurityMethodKey
NSMetadataItemSpeedKey
NSMetadataItemStarRatingKey
NSMetadataItemStateOrProvinceKey
NSMetadataItemStreamableKey
NSMetadataItemSubjectKey
NSMetadataItemTempoKey
NSMetadataItemTextContentKey
NSMetadataItemThemeKey
NSMetadataItemTimeSignatureKey
NSMetadataItemTimestampKey
NSMetadataItemTitleKey
NSMetadataItemTotalBitRateKey
NSMetadataItemURLKey
NSMetadataItemVersionKey
NSMetadataItemVideoBitRateKey
NSMetadataItemWhereFromsKey
NSMetadataItemWhiteBalanceKey
NSMetadataQueryDidFinishGatheringNotification
NSMetadataQueryDidStartGatheringNotification
NSMetadataQueryDidUpdateNotification
NSMetadataQueryGatheringProgressNotification
NSMetadataQueryLocalComputerScope
NSMetadataQueryNetworkScope
NSMetadataQueryUbiquitousDataScope
NSMetadataQueryUbiquitousDocumentsScope
NSMetadataQueryUserHomeScope
NSMetadataUbiquitousItemContainerDisplayNameKey
NSMetadataUbiquitousItemDownloadRequestedKey
NSMetadataUbiquitousItemDownloadingErrorKey
NSMetadataUbiquitousItemDownloadingStatusCurrent
NSMetadataUbiquitousItemDownloadingStatusDownloaded
NSMetadataUbiquitousItemDownloadingStatusKey
NSMetadataUbiquitousItemDownloadingStatusNotDownloaded
NSMetadataUbiquitousItemHasUnresolvedConflictsKey
NSMetadataUbiquitousItemIsDownloadedKey
NSMetadataUbiquitousItemIsDownloadingKey
NSMetadataUbiquitousItemIsExternalDocumentKey
NSMetadataUbiquitousItemIsSharedKey
NSMetadataUbiquitousItemIsUploadedKey
NSMetadataUbiquitousItemIsUploadingKey
NSMetadataUbiquitousItemPercentDownloadedKey
NSMetadataUbiquitousItemPercentUploadedKey
NSMetadataUbiquitousItemURLInLocalContainerKey
NSMetadataUbiquitousItemUploadingErrorKey
NSMetadataUbiquitousSharedItemCurrentUserPermissionsKey
NSMetadataUbiquitousSharedItemCurrentUserRoleKey
NSMetadataUbiquitousSharedItemMostRecentEditorNameComponentsKey
NSMetadataUbiquitousSharedItemOwnerNameComponentsKey
NSMetadataUbiquitousSharedItemPermissionsReadOnly
NSMetadataUbiquitousSharedItemPermissionsReadWrite
NSMetadataUbiquitousSharedItemRoleOwner
NSMetadataUbiquitousSharedItemRoleParticipant
NSMonthNameArray
NSNegateBooleanTransformerName
NSNetServicesErrorCode
NSNetServicesErrorDomain
NSNextDayDesignations
NSNextNextDayDesignations
NSNonOwnedPointerHashCallBacks
NSNonOwnedPointerMapKeyCallBacks
NSNonOwnedPointerMapValueCallBacks
NSNonOwnedPointerOrNullMapKeyCallBacks
NSNonRetainedObjectHashCallBacks
NSNonRetainedObjectMapKeyCallBacks
NSNonRetainedObjectMapValueCallBacks
NSObjectHashCallBacks
NSObjectInaccessibleException
NSObjectMapKeyCallBacks
NSObjectMapValueCallBacks
NSObjectNotAvailableException
NSOldStyleException
NSOwnedPointerHashCallBacks
NSOwnedPointerMapKeyCallBacks
NSOwnedPointerMapValueCallBacks
NSParseErrorException
NSPersianCalendar
NSPersonNameComponentDelimiter
NSPersonNameComponentFamilyName
NSPersonNameComponentGivenName
NSPersonNameComponentKey
NSPersonNameComponentMiddleName
NSPersonNameComponentNickname
NSPersonNameComponentPrefix
NSPersonNameComponentSuffix
NSPointerToStructHashCallBacks
NSPortDidBecomeInvalidNotification
NSPortReceiveException
NSPortSendException
NSPortTimeoutException
NSPriorDayDesignations
NSRangeException
NSRecoveryAttempterErrorKey
NSRegistrationDomain
NSRegularExpressionAllowCommentsAndWhitespace
NSRegularExpressionAnchorsMatchLines
NSRegularExpressionCaseInsensitive
NSRegularExpressionDotMatchesLineSeparators
NSRegularExpressionIgnoreMetacharacters
NSRegularExpressionUseUnicodeWordBoundaries
NSRegularExpressionUseUnixLineSeparators
NSRepublicOfChinaCalendar
NSShortDateFormatString
NSShortMonthNameArray
NSShortTimeDateFormatString
NSShortWeekDayNameArray
NSShowNonLocalizedStrings
NSStreamDataWrittenToMemoryStreamKey
NSStreamFileCurrentOffsetKey
NSStreamSOCKSErrorDomain
NSStreamSOCKSProxyConfigurationKey
NSStreamSOCKSProxyHostKey
NSStreamSOCKSProxyPasswordKey
NSStreamSOCKSProxyPortKey
NSStreamSOCKSProxyUserKey
NSStreamSOCKSProxyVersion4
NSStreamSOCKSProxyVersion5
NSStreamSOCKSProxyVersionKey
NSStreamSocketSSLErrorDomain
NSStreamSocketSecurityLevelKey
NSStreamSocketSecurityLevelNegotiatedSSL
NSStreamSocketSecurityLevelNone
NSStreamSocketSecurityLevelSSLv2
NSStreamSocketSecurityLevelSSLv3
NSStreamSocketSecurityLevelTLSv1
NSStringEncodingErrorKey
NSSystemClockDidChangeNotification
NSSystemTimeZoneDidChangeNotification
NSTaskDidTerminateNotification
NSThisDayDesignations
NSThousandsSeparator
NSThreadDidStartNotification
NSThreadWillExitNotification
NSThumbnail1024x1024SizeKey
NSTimeDateFormatString
NSTimeFormatString
NSTimeIntervalSince1970
NSURLAddedToDirectoryDateKey
NSURLApplicationIsScriptableKey
NSURLAttributeModificationDateKey
NSURLAuthenticationMethodClientCertificate
NSURLAuthenticationMethodDefault
NSURLAuthenticationMethodHTMLForm
NSURLAuthenticationMethodHTTPBasic
NSURLAuthenticationMethodHTTPDigest
NSURLAuthenticationMethodNTLM
NSURLAuthenticationMethodNegotiate
NSURLAuthenticationMethodServerTrust
NSURLContentAccessDateKey
NSURLContentModificationDateKey
NSURLCreationDateKey
NSURLCredentialStorageChangedNotification
NSURLCustomIconKey
NSURLDocumentIdentifierKey
NSURLEffectiveIconKey
NSURLErrorDomain
NSURLErrorFailingURLErrorKey
NSURLErrorFailingURLStringErrorKey
NSURLErrorKey
NSURLFileAllocatedSizeKey
NSURLFileResourceIdentifierKey
NSURLFileResourceTypeBlockSpecial
NSURLFileResourceTypeCharacterSpecial
NSURLFileResourceTypeDirectory
NSURLFileResourceTypeKey
NSURLFileResourceTypeNamedPipe
NSURLFileResourceTypeRegular
NSURLFileResourceTypeSocket
NSURLFileResourceTypeSymbolicLink
NSURLFileResourceTypeUnknown
NSURLFileScheme
NSURLFileSecurityKey
NSURLFileSizeKey
NSURLGenerationIdentifierKey
NSURLHasHiddenExtensionKey
NSURLIsAliasFileKey
NSURLIsApplicationKey
NSURLIsDirectoryKey
NSURLIsExcludedFromBackupKey
NSURLIsExecutableKey
NSURLIsHiddenKey
NSURLIsMountTriggerKey
NSURLIsPackageKey
NSURLIsReadableKey
NSURLIsRegularFileKey
NSURLIsSymbolicLinkKey
NSURLIsSystemImmutableKey
NSURLIsUbiquitousItemKey
NSURLIsUserImmutableKey
NSURLIsVolumeKey
NSURLIsWritableKey
NSURLLabelColorKey
NSURLLabelNumberKey
NSURLLinkCountKey
NSURLLocalizedLabelKey
NSURLLocalizedNameKey
NSURLLocalizedTypeDescriptionKey
NSURLNameKey
NSURLParentDirectoryURLKey
NSURLPathKey
NSURLPreferredIOBlockSizeKey
NSURLProtectionSpaceFTPProxy
NSURLProtectionSpaceHTTPProxy
NSURLProtectionSpaceHTTPSProxy
NSURLProtectionSpaceSOCKSProxy
NSURLQuarantinePropertiesKey
NSURLSessionTaskPriorityDefault
NSURLSessionTaskPriorityHigh
NSURLSessionTaskPriorityLow
NSURLSessionTransferSizeUnknown
NSURLTagNamesKey
NSURLTotalFileAllocatedSizeKey
NSURLTotalFileSizeKey
NSURLTypeIdentifierKey
NSURLUbiquitousItemContainerDisplayNameKey
NSURLUbiquitousItemDownloadRequestedKey
NSURLUbiquitousItemDownloadingErrorKey
NSURLUbiquitousItemDownloadingStatusCurrent
NSURLUbiquitousItemDownloadingStatusDownloaded
NSURLUbiquitousItemDownloadingStatusKey
NSURLUbiquitousItemDownloadingStatusNotDownloaded
NSURLUbiquitousItemHasUnresolvedConflictsKey
NSURLUbiquitousItemIsDownloadingKey
NSURLUbiquitousItemIsUploadedKey
NSURLUbiquitousItemIsUploadingKey
NSURLUbiquitousItemUploadingErrorKey
NSURLVolumeAvailableCapacityKey
NSURLVolumeCreationDateKey
NSURLVolumeIdentifierKey
NSURLVolumeIsAutomountedKey
NSURLVolumeIsBrowsableKey
NSURLVolumeIsEjectableKey
NSURLVolumeIsInternalKey
NSURLVolumeIsJournalingKey
NSURLVolumeIsLocalKey
NSURLVolumeIsReadOnlyKey
NSURLVolumeIsRemovableKey
NSURLVolumeLocalizedFormatDescriptionKey
NSURLVolumeLocalizedNameKey
NSURLVolumeMaximumFileSizeKey
NSURLVolumeNameKey
NSURLVolumeResourceCountKey
NSURLVolumeSupportsAdvisoryFileLockingKey
NSURLVolumeSupportsCasePreservedNamesKey
NSURLVolumeSupportsCaseSensitiveNamesKey
NSURLVolumeSupportsExtendedSecurityKey
NSURLVolumeSupportsHardLinksKey
NSURLVolumeSupportsJournalingKey
NSURLVolumeSupportsPersistentIDsKey
NSURLVolumeSupportsRenamingKey
NSURLVolumeSupportsRootDirectoryDatesKey
NSURLVolumeSupportsSparseFilesKey
NSURLVolumeSupportsSymbolicLinksKey
NSURLVolumeSupportsVolumeSizesKey
NSURLVolumeSupportsZeroRunsKey
NSURLVolumeTotalCapacityKey
NSURLVolumeURLForRemountingKey
NSURLVolumeURLKey
NSURLVolumeUUIDStringKey
NSUbiquitousKeyValueStoreChangeReasonKey
NSUbiquitousKeyValueStoreDidChangeExternallyNotification
NSUnarchiveFromDataTransformerName
NSUndefinedKeyException
NSUnderlyingErrorKey
NSUndoManagerCheckpointNotification
NSUndoManagerDidOpenUndoGroupNotification
NSUndoManagerDidRedoChangeNotification
NSUndoManagerDidUndoChangeNotification
NSUndoManagerWillCloseUndoGroupNotification
NSUndoManagerWillRedoChangeNotification
NSUndoManagerWillUndoChangeNotification
NSUserDefaultsDidChangeNotification
NSUserNotificationDefaultSoundName
NSWeekDayNameArray
NSWillBecomeMultiThreadedNotification
NSXMLParserErrorDomain
NSYearMonthWeekDesignations
NSZeroPoint
NSZeroRect
NSZeroSize

### Functions

GNUstepConfig
GNUstepUserConfig
GSDebugAllocationActive
GSDebugAllocationAdd
GSDebugAllocationBytes
GSDebugAllocationClassList
GSDebugAllocationCount
GSDebugAllocationList
GSDebugAllocationListAll
GSDebugAllocationListRecordedObjects
GSDebugAllocationPeak
GSDebugAllocationRecordAndTrace
GSDebugAllocationRecordObjects
GSDebugAllocationRemove
GSDebugAllocationTagRecordedObject
GSDebugAllocationTaggedObjects
GSDebugAllocationTotal
GSDebugSet
GSDefaultsRootForUser
GSInitializeProcess
GSInitializeProcessAndroid
GSInitializeProcessAndroidWithArgs
GSLogLock
GSNSURLSessionDataCompletionHandler
GSNSURLSessionDownloadCompletionHandler
GSOutOfMemory
GSRegisterCurrentThread
GSSetDebugAllocationFunctions
GSSetUserName
GSSpellServerName
GSSwapBigI128ToHost
GSSwapBigI16ToHost
GSSwapBigI32ToHost
GSSwapBigI64ToHost
GSSwapHostI128ToBig
GSSwapHostI128ToLittle
GSSwapHostI16ToBig
GSSwapHostI16ToLittle
GSSwapHostI32ToBig
GSSwapHostI32ToLittle
GSSwapHostI64ToBig
GSSwapHostI64ToLittle
GSSwapI128
GSSwapI16
GSSwapI32
GSSwapI64
GSSwapLittleI128ToHost
GSSwapLittleI16ToHost
GSSwapLittleI32ToHost
GSSwapLittleI64ToHost
GSUPurge
GSUSet
GSUnique
GSUniquing
GSUnregisterCurrentThread
NSAllHashTableObjects
NSAllMapTableKeys
NSAllMapTableValues
NSAllocateCollectable
NSAllocateMemoryPages
NSAllocateObject
NSClassFromString
NSCompareHashTables
NSCompareMapTables
NSContainsRect
NSConvertHostDoubleToSwapped
NSConvertHostFloatToSwapped
NSConvertSwappedDoubleToHost
NSConvertSwappedFloatToHost
NSCopyHashTableWithZone
NSCopyMapTableWithZone
NSCopyMemoryPages
NSCopyObject
NSCountFrames
NSCountHashTable
NSCountMapTable
NSCreateHashTable
NSCreateHashTableWithZone
NSCreateMapTable
NSCreateMapTableWithZone
NSCreateZone
NSDeallocateMemoryPages
NSDeallocateObject
NSDecimalAdd
NSDecimalCompact
NSDecimalCompare
NSDecimalCopy
NSDecimalDivide
NSDecimalDouble
NSDecimalFromComponents
NSDecimalFromString
NSDecimalIsNotANumber
NSDecimalMax
NSDecimalMin
NSDecimalMultiply
NSDecimalMultiplyByPowerOf10
NSDecimalNormalize
NSDecimalPower
NSDecimalRound
NSDecimalString
NSDecimalSubtract
NSDecrementExtraRefCountWasZero
NSDefaultMallocZone
NSDivideRect
NSEdgeInsetsEqual
NSEdgeInsetsMake
NSEndHashTableEnumeration
NSEndMapTableEnumeration
NSEnumerateHashTable
NSEnumerateMapTable
NSEqualPoints
NSEqualRanges
NSEqualRects
NSEqualSizes
NSExtraRefCount
NSFileTypeForHFSTypeCode
NSFrameAddress
NSFreeHashTable
NSFreeMapTable
NSFullUserName
NSGetSizeAndAlignment
NSGetUncaughtExceptionHandler
NSHFSTypeCodeFromFileType
NSHFSTypeOfFile
NSHashGet
NSHashInsert
NSHashInsertIfAbsent
NSHashInsertKnownAbsent
NSHashRemove
NSHeight
NSHomeDirectory
NSHomeDirectoryForUser
NSHostByteOrder
NSIncrementExtraRefCount
NSInsetRect
NSIntegralRect
NSIntegralRectWithOptions
NSIntersectionRange
NSIntersectionRect
NSIntersectsRect
NSIsEmptyRect
NSLocationInRange
NSLock_error_handler
NSLog
NSLogPageSize
NSLog_printf_handler
NSLogv
NSMakeCollectable
NSMakePoint
NSMakeRange
NSMakeRect
NSMakeSize
NSMapGet
NSMapInsert
NSMapInsertIfAbsent
NSMapInsertKnownAbsent
NSMapMember
NSMapRemove
NSMaxRange
NSMaxX
NSMaxY
NSMidX
NSMidY
NSMinX
NSMinY
NSMouseInRect
NSNextHashEnumeratorItem
NSNextMapEnumeratorPair
NSOffsetRect
NSOpenStepRootDirectory
NSPageSize
NSPointFromCGPoint
NSPointFromString
NSPointInRect
NSPointToCGPoint
NSProtocolFromString
NSRangeFromString
NSRealMemoryAvailable
NSReallocateCollectable
NSRectFromCGRect
NSRectFromString
NSRectToCGRect
NSRecycleZone
NSResetHashTable
NSResetMapTable
NSReturnAddress
NSRoundDownToMultipleOfPageSize
NSRoundUpToMultipleOfPageSize
NSSearchPathForDirectoriesInDomains
NSSelectorFromString
NSSetUncaughtExceptionHandler
NSSetZoneName
NSShouldRetainWithZone
NSSizeFromCGSize
NSSizeFromString
NSSizeToCGSize
NSStandardApplicationPaths
NSStandardLibraryPaths
NSStringFromClass
NSStringFromHashTable
NSStringFromMapTable
NSStringFromPoint
NSStringFromProtocol
NSStringFromRange
NSStringFromRect
NSStringFromSelector
NSStringFromSize
NSSwapBigDoubleToHost
NSSwapBigFloatToHost
NSSwapBigIntToHost
NSSwapBigLongLongToHost
NSSwapBigLongToHost
NSSwapBigShortToHost
NSSwapDouble
NSSwapFloat
NSSwapHostDoubleToBig
NSSwapHostDoubleToLittle
NSSwapHostFloatToBig
NSSwapHostFloatToLittle
NSSwapHostIntToBig
NSSwapHostIntToLittle
NSSwapHostLongLongToBig
NSSwapHostLongLongToLittle
NSSwapHostLongToBig
NSSwapHostLongToLittle
NSSwapHostShortToBig
NSSwapHostShortToLittle
NSSwapInt
NSSwapLittleDoubleToHost
NSSwapLittleFloatToHost
NSSwapLittleIntToHost
NSSwapLittleLongLongToHost
NSSwapLittleLongToHost
NSSwapLittleShortToHost
NSSwapLong
NSSwapLongLong
NSSwapShort
NSTemporaryDirectory
NSUncaughtExceptionHandler
NSUnionRange
NSUnionRect
NSUserName
NSWidth
NSZoneCalloc
NSZoneCheck
NSZoneFree
NSZoneFromPointer
NSZoneMalloc
NSZoneName
NSZoneRealloc
NSZoneStats
_NSAddHandler
_NSRangeExceptionRaise
_NSRemoveHandler
_gcc3_1_hack
gs_consumed

### Macros

FOUNDATION_EXPORT
GS_API_LATEST
GS_API_MACOSX
GS_API_NONE
GS_API_OPENSTEP
GS_API_OSSPEC
GS_API_VERSION
GS_CLANG_MINREQ
GS_DEPRECATED_FUNC
GS_EXPOSE
GS_GCC_MINREQ
GS_NORETURN_METHOD
GS_UNIMPLEMENTED
GS_UNUSED_ARG
GS_UNUSED_FUNC
GS_UNUSED_IVAR
MAC_OS_X_VERSION_MAX_ALLOWED
NSAssert
NSAssert1
NSAssert2
NSAssert3
NSAssert4
NSAssert5
NSCAssert
NSCAssert1
NSCAssert2
NSCAssert3
NSCAssert4
NSCAssert5
NSCParameterAssert
NSDecimalMaxDigit
NSDecimalMaxSize
NSDecimalNoScale
NSLocalizedString
NSLocalizedStringFromTable
NSLocalizedStringFromTableInBundle
NSParameterAssert
NS_AVAILABLE
NS_AVAILABLE_MAC
NS_CLASS_AVAILABLE
NS_CLASS_AVAILABLE_MAC
NS_CLASS_DEPRECATED
NS_CLASS_DEPRECATED_MAC
NS_CONSUMED
NS_CONSUMES_SELF
NS_DEPRECATED
NS_DEPRECATED_MAC
NS_DESIGNATED_INITIALIZER
NS_ENUM_AVAILABLE
NS_ENUM_AVAILABLE_MAC
NS_ENUM_DEPRECATED
NS_ENUM_DEPRECATED_MAC
NS_INVOCATION
NS_MESSAGE
NS_RETURNS_NOT_RETAINED
NS_RETURNS_RETAINED
NS_ROOT_CLASS
NS_UNAVAILABLE
OS_API_VERSION
__has_feature

### Types

GSDebugAllocationTraceFunction
GSFileWrapperType
GSRegexEnumerationCallback
NSActivityOptions
NSAlignmentOptions
NSAttributedStringKey
NSBackgroundActivityResult
NSBinarySearchingOptions
NSByteCountFormatterCountStyle
NSByteCountFormatterUnits
NSByteOrder
NSCalculationError
NSCalendarOptions
NSCalendarUnit
NSComparisonPredicateModifier
NSComparisonPredicateOptions
NSComparisonResult
NSCompoundPredicateType
NSDataBase64DecodingOptions
NSDataBase64EncodingOptions
NSDataSearchOptions
NSDateComponentsFormatterUnitsStyle
NSDateComponentsFormatterZeroFormattingBehavior
NSDateFormatterBehavior
NSDateFormatterStyle
NSDateIntervalFormatterStyle
NSDirectoryEnumerationOptions
NSEnergyFormatterUnit
NSEnumerationOptions
NSErrorDomain
NSExceptionName
NSExpressionType
NSFileCoordinatorReadingOptions
NSFileCoordinatorWritingOptions
NSFileVersionAddingOptions
NSFileVersionReplacingOptions
NSFileWrapperReadingOptions
NSFileWrapperWritingOptions
NSFormattingContext
NSFormattingUnitStyle
NSHTTPCookieAcceptPolicy
NSHashTableOptions
NSISO8601DateFormatOptions
NSInteger
NSItemProviderErrorCode
NSItemProviderFileOptions
NSItemProviderRepresentationVisibility
NSJSONReadingOptions
NSJSONWritingOptions
NSKeyValueChange
NSKeyValueChangeKey
NSKeyValueObservingOptions
NSKeyValueSetMutationKind
NSLengthFormatterUnit
NSLinguisticTag
NSLinguisticTagScheme
NSLinguisticTaggerOptions
NSLinguisticTaggerUnit
NSLocaleLanguageDirection
NSMapTableOptions
NSMapTableValueCallBacks
NSMassFormatterUnit
NSMatchingFlags
NSMatchingOptions
NSMeasurementFormatterUnitOptions
NSNetServiceOptions
NSNetServicesError
NSNotificationCoalescing
NSNotificationName
NSNotificationSuspensionBehavior
NSNumberFormatterBehavior
NSNumberFormatterPadPosition
NSNumberFormatterRoundingMode
NSNumberFormatterStyle
NSOperationQueuePriority
NSPersonNameComponentsFormatterOptions
NSPersonNameComponentsFormatterStyle
NSPoint
NSPointArray
NSPointPointer
NSPointerFunctionsOptions
NSPostingStyle
NSPredicateOperatorType
NSProgressFileOperationKind
NSProgressKind
NSProgressUserInfoKey
NSPropertyListFormat
NSPropertyListMutabilityOptions
NSPropertyListReadOptions
NSPropertyListWriteOptions
NSQualityOfService
NSRange
NSRangePointer
NSRect
NSRectArray
NSRectEdge
NSRectPointer
NSRegularExpressionOptions
NSRoundingMode
NSRunLoopMode
NSSearchPathDirectory
NSSearchPathDomainMask
NSSize
NSSizeArray
NSSizePointer
NSSocketNativeHandle
NSSortOptions
NSStreamEvent
NSStreamStatus
NSStringCompareOptions
NSStringEncoding
NSStringEncodingConversionOptions
NSStringEnumerationOptions
NSSwappedDouble
NSSwappedFloat
NSTaskTerminationReason
NSTextCheckingType
NSTextCheckingTypes
NSTimeInterval
NSTimeZoneNameStyle
NSUInteger
NSURLBookmarkResolutionOptions
NSURLCacheStoragePolicy
NSURLCredentialPersistence
NSURLHandleStatus
NSURLRequestCachePolicy
NSURLRequestNetworkServiceType
NSURLSessionAuthChallengeDisposition
NSURLSessionResponseDisposition
NSURLSessionTaskState
NSUserNotificationActivationType
NSXMLDTDNodeKind
NSXMLDocumentContentKind
NSXMLNodeKind
NSXMLParserError
NSXPCConnectionOptions
NSZone
OSType
RunLoopEventType
_NSObjCValueType
gid_t
gsuuid_t
pid_t
struct NSEdgeInsets
struct _NSHandler
struct _NSHashTableCallBacks
struct _NSMapTableKeyCallBacks
struct autorelease_array_list
struct autorelease_thread_vars
uid_t
unichar

### Variables

NSCocoaErrorDomain
NSDeallocateZombies
NSDebugEnabled
NSDefaultRunLoopMode
NSLinguisticTagAdjective
NSLinguisticTagAdverb
NSLinguisticTagClassifier
NSLinguisticTagCloseParenthesis
NSLinguisticTagCloseQuote
NSLinguisticTagConjunction
NSLinguisticTagDash
NSLinguisticTagDeterminer
NSLinguisticTagIdiom
NSLinguisticTagInterjection
NSLinguisticTagNoun
NSLinguisticTagNumber
NSLinguisticTagOpenParenthesis
NSLinguisticTagOpenQuote
NSLinguisticTagOrganizationName
NSLinguisticTagOther
NSLinguisticTagOtherPunctuation
NSLinguisticTagOtherWhitespace
NSLinguisticTagOtherWord
NSLinguisticTagParagraphBreak
NSLinguisticTagParticle
NSLinguisticTagPersonalName
NSLinguisticTagPlaceName
NSLinguisticTagPreposition
NSLinguisticTagPronoun
NSLinguisticTagPunctuation
NSLinguisticTagSchemeLanguage
NSLinguisticTagSchemeLemma
NSLinguisticTagSchemeLexicalClass
NSLinguisticTagSchemeNameType
NSLinguisticTagSchemeNameTypeOrLexicalClass
NSLinguisticTagSchemeScript
NSLinguisticTagSchemeTokenType
NSLinguisticTagSentenceTerminator
NSLinguisticTagVerb
NSLinguisticTagWhitespace
NSLinguisticTagWord
NSLinguisticTagWordJoiner
NSMACHErrorDomain
NSOSStatusErrorDomain
NSPOSIXErrorDomain
NSRunLoopCommonModes
NSZombieEnabled
_NSConstantStringClassReference
_NSLock_error_handler
_NSLogDescriptor
_NSLog_printf_handler
enum _NSDirectoryEnumerationOptions
struct NSZoneStats
struct _NSMapTableValueCallBacks
struct _NSNotificationQueueList
struct _NSRange

# GNUstep Base

Copyright: (C) 1993-2023 Free Software Foundation, Inc.

# Base

The GNUstep Base library is a free software package implementing the API of the OpenStep Foundation Kit (tm), including later additions. This documentation package describes the core of the Base library, for documentation on additional classes, see the BaseAdditions documentation package.

Read the Release Notes for the current release.

## Compatibility

GNUstep is generally compatible with the OpenStep specification and with recent developments of the MacOS (cocoa) API. Where MacOS deviates from the OpenStep API, GNUstep generally attempts to support both versions. In some cases the newer MacOS APIs are incompatible with OpenStep, and GNUstep usually supports the richer version. See the OpenStep Compliance section for more information on OpenStep Compliance.

In order to deal with compatibility issues, GNUstep uses two mechanisms - it provides conditionally compiled sections of the library header files, so that software can be built that will conform strictly to a particular API, and it provides user default settings to control the behavior of the library at runtime.

### Conditional compilation

Adding an option to a makefile to define one of the following preprocessor constants will modify the API visible to software being compiled -

GS_GNUSTEP_V
  Specifies the software version of the header being included.
  Features in that header which are declared as having been introduced at or before the specified version, and not being removed until or after the specified version are available.
  The version consists of five or six digits ... a major number (0-99) followed by a minor number (00-99) and a subminor number (00-99).
  Features in the header file are marked as belonging to different version ranges using the GS_API_VERSION macro.
  NB. This is the native versioning of the library being used via the header file. You can use this mechanism in your own libraries and frameworks.
GS_OPENSTEP_V
  Used only for the software version in sequence of OpenStep specification and the NeXT/Apple implementation of that specification and its extensions.
  Features in the header being included which are declared as having been introduced at or before the specified version, and not being removed until or after the specified version are available.
  The version consists of five or six digits ... a major number (1-99) followed by a minor number (00-99) and a subminor number (00-99).
  A major number of 1 indicates the OpenStep specification ... available as the GS_API_OSSPEC preprocessor constant.
  A major number of 4 indicates the OPENSTEP implementation ... available as the GS_API_OPENSTEP preprocessor constant.
  A major number of 10 indicates the MacOS-X implementation ... available as the GS_API_MACOSX preprocessor constant.
  Features in the header file are marked as belonging to different version ranges using the GS_API_VERSION macro.
  For MacOS-X compatibility, if this constant is not defined and MAC_OS_X_VERSION_MAX_ALLOWED is defined, then GS_OPENSTEP_V is defined to be MAC_OS_X_VERSION_MAX_ALLOWED.
  Similarly, for MacOS-X we define MAC_OS_X_VERSION_10_2, MAC_OS_X_VERSION_10_3 etc as the appropriate numeric version numbers.

NB These preprocessor constants are used in developer code (ie the code that users of GNUstep write) rather than by the GNUstep software itself. They permit a developer to ensure that he/she does not write code which depends upon API not present on other implementations (in practice, MacOS-X or some old OPENSTEP systems).
The actual GNUstep libraries are always built with the full GNUstep API in place, so that the feature set is as consistent as possible.

The presence of these macros is also used by autogsdoc to generate information about which version of the API a particular feature belongs to.

### User defaults

GNU-Debug

  An array of strings that lists debug levels to be used within the program. These debug levels are merged with any which were set on the command line or added programmatically to the set given by the [NSProcessInfo-debugSet] method.

GSExceptionStackTrace

  Setting the user default `GSExceptionStackTrace` to `YES` will cause the stack trace at the point when an exception occurs to be included as part of the text returned by the -description method of the exception.
  That effect may also be obtained by setting the GNUSTEP_STACK_TRACE environment variable before starting a program.

GSLogSyslog

  Setting the user default `GSLogSyslog` to `YES` will cause log/debug output to be sent to the syslog facility (on systems which support it), rather than to the standard error stream. This is useful in environments where stderr has been re-used strangely for some reason.
  On mswindows, where syslog does not exist, this flag instead controls whether log/debug output is sent to the windows event log.

GSLogOffset

  Setting the user default `GSLogOffset` to `YES` will cause NSLog and debug output to include the current time zone offset in the timestamp of the logged message.
  This is useful when comparing logs from machines in different countries.

GSLogThread

  Setting the user default `GSLogThread` to `YES` will cause NSLog and debug output to include the current thread name in the logged message.
  This may be useful for debugging multi-threaded applications.

GSMacOSXCompatible

  Setting the user default `GSMacOSXCompatible` to `YES` will cause MacOS compatible behavior to be the default at runtime. This default may however be overridden to provide more fine grained control of system behavior.

GSOldStyleGeometry

  Specifies whether the functions for producing strings describing geometric structures (NSStringFromPoint(), NSStringFromSize(), and NSStringFromRect()) should produce strings conforming to the OpenStep specification or to MacOS-X behavior. The functions for parsing those strings should cope with both cases anyway.

GSSOCKS

  May be used to specify a default SOCKS5 server (and optionally a port separated from the server by a colon) to which tcp/ip connections made using the NSFileHandle extension methods should be directed.
  This default overrides the SOCKS5_SERVER and SOCKS_SERVER environment variables.

GSSortAlgorithm

  May be used to specify the sort algorithm used for sorting arrays etc. The current options are QuickSort, ShellSort, and TimSort, with TimSort being the default.
  NB. The QuickSort and ShellSort are 'unstable' algorithms, which means that the order of equal objects may be changed by a sort. Selecting these may break code which assumes that sorting is stable.

Local Time Zone

  Used to specify the name of the timezone to be used by the NSTimeZone class.

NSWriteOldStylePropertyLists

  Specifies whether text property-list output should be in the default MacOS-X format (XML), or in the more human readable (but less powerful) original OpenStep format.

  Reading of property lists is supported in either format, but only if GNUstep is built with the libxml library (which is needed to handle XML parsing).

  NB. MacOS-X generates illegal XML for some strings - those which contain characters not legal in XML. GNUstep always generates legal XML, at the cost of a certain degree of compatibility. GNUstep XML property lists use a backslash to escape illegal characters, and consequently any string containing either a backslash or an illegal character will be written differently to the same string on MacOS-X.

NSLanguages

  An array of strings that lists the users preferred languages, in order or preference. If not found the default is just English.

### Environment variables

There are some environment variables used by GNUstep base, where there would be problems obtaining data from the defaults system.

CRASH_ON_ABORT

  The default exception handler will either cause the program to simply terminate, or to crash - leaving a core dump. The standard behavior is to leave a core dump if the library was built for debugging, and to simply exit if it was not.

  The CRASH_ON_ABORT environment variable can be used to override this behavior. If this is defined to NO, FALSE, or 0 then the program will simply exit when an exception occurs. Any other value of the variable will cause the program to generate a core dump.

CRASH_ON_ZOMBIE

  When the a message is sent to a zombie object (see the `NSZombieEnabled` environment variable) the base library allows you to specify whether the program should continue after logging the message, or have the program abort.
  By default, the program will attempt to continue.

  The `CRASH_ON_ZOMBIE` variable can be used to override this behavior. If this is defined to YES, TRUE, or 1 then the program will log the message sent to the zombie and then abort, producing a core dump on systems where that is possible.

GNUSTEP_SHOULD_CLEAN_UP

  When this is set to YES, the GNUstep extension method +setShouldCleanUp: is called when the NSObject class is initialised, this turns on recording of some intentionally kept memory (data structures intended to persist for the whole life of the process), and activates cleanup of that memory on process exit.

  Many classes do not yet clean up after themselves when this is enabled. Cleanup is currently problematic and may never work nicely, so this feature may be removed.

GNUSTEP_STACK_TRACE

  When this is set to YES a human readable stack trace (with function names and line numbers) is added to the output of the description method of a raised exception object.
  NB. This behavior may also be enabled by setting the GSExceptionStackTrace user default to YES.
  This only works if gnustep was built with support for it using libbfd, so it may not be available on all systems.

  When this is set to NO the raw stack trace provided by [NSException-callStackReturnAddresses] is disabled.
  The possible reasons for disabling this are:
  1. that the feature is implemented using a function of the gcc compiler to provide stack addresses, and the function is buggy on some systems/compiler versions, and will cause a signal to be sent which would crash your program if not caught. The GNUstep code catches the signal and recovers using a signal handler, but there have been two reports of this not working with no known cause.
  2. that you have code which uses exceptions in a way in which they were not designed to be used ... so that they are routinely and frequently called rather than being called only occasionally when exceptional conditions occur. In this case you may want to disable the stack frame generation implicit in each raised exception, in order to improve performance.

  When this is not set, or is set to a non-boolean value, the stack trace handling on exceptions is MacOS-X compatible ... stack return addresses are available but a human readable trace back is not logged.

GNUSTEP_STRING_ENCODING

  This is used to specify the default encoding for 8-bit strings (those used by 'cstring' methods of NSString).
  It may be any of the 8-bit encodings supported by your system.

  If this environment variable is not set, GNUstep attempts to use the characterset specified by your operating systems, locale information (using the standard nl_langinfo function) if possible.

  If there is no usable operating system defined characterset, GNUstep defaults to NSISOLatin1StringEncoding.

GNUSTEP_HOST_CPU

  Used in place of GNUSTEP_TARGET_CPU if the other is missing. Please do not use this to locate resources; for architecture dependent resources use GNUSTEP_TARGET_DIR.

GNUSTEP_HOST_DIR

  Used in place of GNUSTEP_TARGET_DIR if the other is missing.

GNUSTEP_HOST_OS

  Used in place of GNUSTEP_TARGET_OS if the other is missing. Please do not use this to locate resources; for architecture dependent resources use GNUSTEP_TARGET_DIR.

GNUSTEP_TARGET_CPU

  Overrides the default value of the machine (hardware) name used on this system. Please do not use this to locate resources; for architecture dependent resources use GNUSTEP_TARGET_DIR.

GNUSTEP_TARGET_DIR

  Overrides the default path used to locate subdirectories for GNUstep binaries within bundles and applications. This is normally equivalent to a path made up of the GNUSTEP_TARGET_CPU and GNUSTEP_TARGET_OS

GNUSTEP_TARGET_OS

  Overrides the default value of the operating system name used on this system. Please do not use this to locate resources; for architecture dependent resources use GNUSTEP_TARGET_DIR.

GNUSTEP_TZ

  Used to specify the timezone to be used if there is no timezone specified in the user defaults system. The preferred mechanism is to use the 'Local Time Zone' value from the user defaults system.

GNUSTEP_CONFIG_FILE

  This functionality may have been disabled if the base library was configured/built with the `--disable-environment-config-file` option.
  If it is operational (ie unless you've deliberately disabled it), the environment variable overrides the normal path to the gnustep config file used to determine the locations of paths for the gnustep system (see later).
  This is provided to support situations such as when you install into a sandbox during packaging, or where you may want to simultaneously run applications using different sets of resources but linked to a single copy of the base library, or you want to use an alternative config file for some reason.

GNUSTEP_BEHAVIOR_DEBUG
  A boolean (YES or NO) which can be used to turn on debug logging (to stderr) of the GSObjCRuntime functions to add/override methods in a class using a list of methods from another class.
HOMEDRIVE

  Used on ms-windows to locate the home directory if the HOMEPATH environment variable is also used.

HOMEPATH

  Used on ms-windows to locate the home directoryb in conjunction with HOMEDRIVE. If this is just a backslash then the USERPROFILE variable is used if possible.

LANGUAGES

  If there is no NSLanguages user default set, and there is no language information available in the native system locale mechanism, then this environment variable is used to provide a list of the languages that the user prefers to use. languages listed in this variable must be separated by semicolons.

LOGNAME

  This is used as the default value for the current user (as returned by the NSUserName() functions). If it is not specified, or contains an illegal value, other methods are used to get the user name.

LIBRARY_COMBO

  Used to override the default value of the combination of standard libraries used to build binaries. This value locates the final subdirectory used to locate binaries.

NSDeallocateZombies

  This may be used in conjunction with NSZombieEnabled to specify whether the objects should really be deallocated. If you set this to YES, the zombie logging will only work until the deallocated memory is re-used.
  This feature only works with the classic runtime as the modern runtime can't support both zombies and deallocation.

NSZombieEnabled

  If this is set to YES, then deallocation of an object causes the object to be morphed into a Zombie ... a special object of class NSZombie whose -logZombie: method will call the GNUstep specific GSLogZombie() function to log the method call.
  If GNUstep-base was built for debugging (make debug=yes), you can set a breakpoint in this method or function and examine the process memory when you are running under a debugger.
  As this overrides actual object deallocation, all memory allocated for objects will be leaked (unless using the classic runtime with the NSDeallocateZombies environment variable is also set).
  You can use the `CRASH_ON_ZOMBIE` environment variable to force an abort after the message is logged.

SOCKS5_SERVER

  Specifies the default socks server to be used when making outgoing tcp/ip connections using NSFileHandle. This may also specify a port after the host name (and separated from it by a colon).
  This environment variable is used only if the GSSOCKS user default is not set.

SOCKS_SERVER

  Equivalent to SOCKS5_SERVER, but used only if that is not defined.

TZ

  Used to specify the timezone to be used if there is no timezone specified by any other mechanism. The preferred mechanism is to use the 'Local Time Zone' value from the user defaults system.

USERPROFILE

  Used on windows to identify the home directory of the current used (unless HOMEPATH and HOMEDRIVE are set to point to an individual user's home).

### GNUstep Configuration File

This file is the master configuration file for GNUstep. It can be used to set the base location of all the standard paths that GNUstep programs use or know about. The location of this file depends on how the Base library was configured and/or what operating system it was configured on. On a GNU/Linux system, the default would be /etc/GNUstep/GNUstep.conf for instance, while on mswindows it would be ./GNUstep.conf (the leading './' here indicates that the file is located relative to the base library, on windows this is the location of the base library DLL, which is normally the same location as command line tools).

If setting up GNUstep in a sandbox for packaging it as part of an operating system distribution, you may well want a special configuration for use within the sandbox. The normal way to do that would be to create a GNUstep.conf file in /tmp and set the GNUSTEP_CONFIG_FILE environment variable to point to that while doing the packaging setup.

NB. The gnustep-make package sets up a configuration file to be used when building GNUstep software, and gnustep-base normally uses that same file, but it is important to be aware that the two configuration files are not necessarily the same since one is required to provide environment variables used while building and installing software, but the other is used when gnustep tools and applications are run (ie in a target/deployment environment).
In particular it is normal for the two files to differ on mswindows (where the build environment is an UNIX-like MSYS shell, using the its own paths, but the deployment environment is native-windows using real windows paths).

The location of the GNUstep configuration file can be specified when the base library is configured, using the `--with-config-file=` option of the `configure` script.
This configuration file is not actually required to exist, and if it does not exist, then default values will be used for the standard path locations (these default values may be specified using the `--with-default-config=` option of the `configure` script.
If you want to force the internal defaults to be used, you can use `--with-config-file=` to specify a path with a trailing '/' (ie with no filename) as the base library will refrain from trying to load configuration from a file of no name.
System paths are defined by the following:

GNUSTEP_SYSTEM_APPS
  This is where System GUI Applications get installed.
  Traditionally it is /usr/GNUstep/System/Applications.
GNUSTEP_SYSTEM_ADMIN_APPS
  This is where System GUI Applications that only the Administrator can use get installed.
  Traditionally it is /usr/GNUstep/System/Applications/Admin.
GNUSTEP_SYSTEM_WEB_APPS
  This is where System Web Applications (GSWeb, SOPE) get installed.
  Traditionally it is /usr/GNUstep/System/Library/WebApplications.
GNUSTEP_SYSTEM_TOOLS
  This is where System Command-Line Tools get installed.
  Traditionally it is /usr/GNUstep/System/Tools.
GNUSTEP_SYSTEM_ADMIN_TOOLS
  This is where System Command-Line Tools that only the Administrator can use get installed. Important: this should not be in the PATH of normal users.
  Traditionally it is /usr/GNUstep/System/Tools/Admin.
GNUSTEP_SYSTEM_LIBRARY
  This is where System resources get installed. This directory will contain a lot of executable code since *step traditionally likes to bundle executables and resources together.
  Traditionally it is /usr/GNUstep/System/Library.
GNUSTEP_SYSTEM_HEADERS
  This is where System headers get installed. They are the library .h headers.
  Traditionally it is /usr/GNUstep/System/Library/Headers.
GNUSTEP_SYSTEM_LIBRARIES
  This is where System libraries get installed. By libraries we mean the shared/static object files that you can link into programs.
  Traditionally it is /usr/GNUstep/System/Library/Libraries.
GNUSTEP_SYSTEM_DOC
  This is where System documentation get installed. This is known not to contain any executable, so we keep it separate.
  Traditionally it is /usr/GNUstep/System/Library/Documentation.
GNUSTEP_SYSTEM_DOC_MAN
  This is where System man pages get installed.
  Traditionally it is /usr/GNUstep/System/Library/Documentation/man.
GNUSTEP_SYSTEM_DOC_INFO
  This is where System info pages get installed.
  Traditionally it is /usr/GNUstep/System/Library/Documentation/info.

In addition to the above SYSTEM domain paths, there are corresponding LOCAL, NETWORK, and USER domain paths (with the same names except for replacing 'SYSTEM' with 'LOCAL', 'NETWORK', or 'USER'.
All these paths must be absolute, except for the USER domain paths which, if not absolute, are considered to be with the user's home directory.
NB. as a special case a path may begin with './' or '../' when it is to be resolved to an absolute path relative to the location of the GNUstep configuration file. So while such paths appear to be relative, they actually produce absolute locations at runtime since the location of the configuration file is known.
Finally, for paths in the USER domain only, a limited substitution into the path is performed at runtime as follows:
'%u' is replaced by the user name
'%i' is replaced by the user ID
'%%' is replaced by a single '%'

The GNUSTEP_DEVELOPER_DIR path may be used to specify where the development system is located. On most systems this should be the default value of '/', but on windows it should be the location of the msys/mingw filesystem (so that msys development tools can be found).

Other paths for each user are defined by the following:

GNUSTEP_USER_CONFIG_FILE
  Name of user configuration file (eg. '.GNUstep.conf') relative to the user's home directory.
  Can be specified as an empty string to ensure that no user specific config file is loaded.
GNUSTEP_USER_DEFAULTS_DIR
  Name of directory for user defaults files. Always relative to the user's home directory except:
  On mswindows this may be set to be ':REGISTRY:' to have defaults stored in the windows registry rather than in the standard file format.
  On any system this may be set to ':INTERNAL:' to use only internal defaults domains (NSArgumentDomain, NSRegistrationDomain, and GSConfigDomain).

The user's home directory is taken to be the standard home directory for that user on the system
On unix, that is the user's home directory from the password file, while on windows it's the value given by the HOMEDRIVE and HOMEPATH environment variables (or the USERPROFILE environment variable if the others can't be used).

NB. The presence of a path in the configuration (and therefore its inclusion in the paths provided by the API at runtime) does not guarantee that the directory at that path actually exists in the local filesystem.
However the GNUSTEP_CREATE_LIBRARY_PATH configuration value may be set to YES to tell the library to create the most commonly used per-user directory (GNUSTEP_USER_LIBRARY) on startup if it does not already exist.

All the above values from the configuration file are made available in the NSUserDefaults system at runtime, in the GSConfigDomain (along with any defaults provided in property lists in the GlobalDefaults subdirectory or in the GlobalDefaults.plist file in the same directory as the config file).
The `.plist` files in the GlobalDefaults subdirectory are merged into the defaults system in an unpredictable order, but the values from the GlobalDefaults.plist are merged in after the other values and will take precedence.
The global defaults files allow packagers and system administrators to provide defaults settings for all users of a particular GNUstep installation.
It is recommended that each software package provides its own defaults in the GlobalDefaults subdirectory, while the GlobalDefaults.plist file should be reserved for other system-wide settings.

The exact format of the configuration file is expected to be that of a basic unix "conf" style file, with one key = value per line (the format a unix shell can 'source' in order to define shell variables).
This configuration file uses the escape sequence and quoting conventions of the standard bourne shell.
The only Keys permitted are those listed above, and all consist of uppercase letters, digits, and underscores, and must not begin with a digit.
A value may be any quoted string (or an unquoted string containing no white space).
Lines beginning with a hash '#' are deemed comment lines and ignored.
The backslash character may be used as an escape character anywhere in the file except within a singly quoted string (where it is taken literally).
A backslash followed immediately by a newline (except in a singly quoted string) is removed completely along with the newline ... it thus serves to join lines so that they are treated as a single line.
NB. Since ms-windows uses backslash characters in paths, it is a good idea to specify path values in the config file as singly quoted strings to avoid having to double all occurrences of the backslash.

### Relocatable packages

The configuration files system has two features which make it possible to build standalone packages containing the entire GNUstep system in a form which can be moved anywhere and just run.

Firstly, variables in the configuration file which define paths, are expected to by full path specifications, except for the special case in which they begin with dot-slash (./) or dot-dot-slash (../).
In this case the path from the variable is appended to the path of the directory containing the configuration file (or the path specified to contain the configuration file if no configuration file exists) to form the value used.
So, if you configure other paths relative to the configuration file, you can relocate everything when you move the configuration file.

Secondly, If the value of the path built in to the base library as the location of the config file (or specified by the GNUSTEP_CONFIG_FILE environment variable unless that option was disabled when the base library was configured) begins with a dot-slash (./) or dot-dot-slash (../) then the path used for that file is made relative to the base library.
The base library contains code to determine its own location, so this allows it to locate the configuration file, and by reading the configuration file it determines where all other resources are located.

So you can bundle the whole lot together in one directory, and configure various relative paths in that directory, then move the directory around wherever you like.
However, if your operating system needs to know where to find the libraries it will load, you will have to tell it where they are ... typically you do this by setting an environment variable such as LD_LIBRARY_PATH to contain the full path to the directory you put the libraries in.

### Standalone packages

While the recommended setup for GNUstep is to install the core packages in a standard location on your system, and then install applications which make use of those core libraries, it is sometimes desirable to have standalone applications which don't need the core to be installed.
This is a special case of the relocatable packages described above, in which all your application's dependencies are built as relocatable packages using a filesystem layout which lets them all be stored within your application directory.

As an aide to easy creation of such standalone packages we provide two template gnustep configuration files for a common setup where things are stored in a 'standalone' subdirectory of your application wrapper.
You configure/install gnustep-make with the 'standalone' filesystem layout, then you configure/build/install gnustep-base with the 'standalone.conf' default configuration file, and build/install the other libraries/packages your app depends upon.
This leaves you with a 'standalone' directory containing all the relocatable code, which you can then copy into your app wrapper to provide a complete standalone system.

    cd make
    ./configure --with-layout=standalone
    make install
    . ~/standalone/Makefile/GNUstep.sh
    cd ../base
    ./configure --with-config-file=./GNUstep.conf --with-default-config=standalone.conf
    make install
    cd ../gui
    make install
    cd ../back
    make install

    (cd ~; tar -cf - standalone) | (cd MyApp.app; tar -xpf -)
    export LD_LIBRARY_PATH=`pwd`/MyApp.app/standalone
    MyApp.app/MyApp

### Lock-Down

If you wish to lock down a production system for distribution so that users can't change the config file and mess up paths, you can specify the config file name as a path with a trailing slash so that the base library will not read it, and will use the built in default values.
To do this, you would configure using options like `--disable-environment-config-file` with `--with-config-file=/not-used/` and `--with-default-config=myConfig` where myConfig is a file containing the paths you want to use in the locked down system.
The paths from that file will be built in to the base library as defaults, and library will use them rather than attempting to read a config file at runtime.
You can lock down a relocatable system by using this procedure with './' as the config file path and relative paths in myConfig... a user could then move the entire package around, but would not be able to edit a configuration file to alter the paths within the package.

### .GNUstep.conf files

The user specific configuration file is read after the system configuration file and may generally override values from the main file. To prevent the use specific file from being read, the system manager may define GNUSTEP_USER_CONFIG_FILE in the main file to be an empty string.
In any case, the user specific file is not read if a program is running setuid.

Unless disabled (as specified above) the presence of a `.GNUstep.conf` file in a users home directory permits the user to customize file locations using all the same commands as the system directory, though any attempt to redefine GNUSTEP_USER_CONFIG_FILE is of course ignored.
Attempts to redefine the users home directory at this level are also ignored.

The defaults database for a user is stored in the location given by GNUSTEP_USER_DEFAULTS_DIR in the config file. This is usually a relative path (default, the `GNUstep/Defaults` subdirectory) taken to specify a subdirectory of the user's home directory.
On mswindows this may be set to be ':REGISTRY:' to have defaults stored in the windows registry rather than in the standard file format.
On any system this may be set to ':INTERNAL:' to use only internal defaults domains (NSArgumentDomain, NSRegistrationDomain, and GSConfigDomain).

# API Documentation

- Functions
- Types and Constants

### Class

- NSAffineTransform
- NSAppleEventDescriptor
- NSAppleEventManager
- NSAppleScript
- NSArchiver
- NSArray
- NSAssertionHandler
- NSAttributedString
- NSAutoreleasePool
- NSBackgroundActivityScheduler
- NSBlockOperation
- NSBundle
- NSByteCountFormatter
- NSCache
- NSCachedURLResponse
- NSCalendar
- NSCalendarDate
- NSCharacterSet
- NSClassDescription
- NSCoder
- NSComparisonPredicate
- NSCompoundPredicate
- NSCondition
- NSConditionLock
- NSConnection
- NSCountedSet
- NSData
- NSDate
- NSDateComponents
- NSDateComponentsFormatter
- NSDateFormatter
- NSDateInterval
- NSDateIntervalFormatter
- NSDecimalNumber
- NSDecimalNumberHandler
- NSDeserializer
- NSDictionary
- NSDimension
- NSDirectoryEnumerator
- NSDistantObject
- NSDistributedLock
- NSDistributedNotificationCenter
- NSEnergyFormatter
- NSEnumerator
- NSError
- NSException
- NSExpression
- NSExtensionContext
- NSExtensionItem
- NSFileAccessIntent
- NSFileCoordinator
- NSFileHandle
- NSFileManager
- NSFileVersion
- NSFileWrapper
- NSFormatter
- NSGarbageCollector
- NSHTTPCookie
- NSHTTPCookieStorage
- NSHTTPURLResponse
- NSHashTable
- NSHost
- NSISO8601DateFormatter
- NSIndexPath
- NSIndexSet
- NSInputStream
- NSInvocation
- NSInvocationOperation
- NSItemProvider
- NSItemProviderReadingWriting
- NSJSONSerialization
- NSKeyedArchiver
- NSKeyedUnarchiver
- NSLengthFormatter
- NSLinguisticTagger
- NSLocale
- NSLock
- NSMapTable
- NSMassFormatter
- NSMeasurement
- NSMeasurementFormatter
- NSMessagePort
- NSMessagePortNameServer
- NSMetadataItem
- NSMetadataQuery
- NSMetadataQueryAttributeValueTuple
- NSMetadataQueryResultGroup
- NSMethodSignature
- NSMutableArray
- NSMutableAttributedString
- NSMutableCharacterSet
- NSMutableData
- NSMutableDictionary
- NSMutableIndexSet
- NSMutableOrderedSet
- NSMutableSet
- NSMutableString
- NSMutableURLRequest
- NSNetService
- NSNetServiceBrowser
- NSNotification
- NSNotificationCenter
- NSNotificationQueue
- NSNull
- NSNumber
- NSNumberFormatter
- NSObject
- NSObjectScripting
- NSOperation
- NSOperationQueue
- NSOrderedSet
- NSOrthography
- NSOutputStream
- NSPersonNameComponents
- NSPersonNameComponentsFormatter
- NSPipe
- NSPointerArray
- NSPointerFunctions
- NSPort
- NSPortCoder
- NSPortMessage
- NSPortNameServer
- NSPredicate
- NSProcessInfo
- NSProgress
- NSPropertyListSerialization
- NSProtocolChecker
- NSProxy
- NSRecursiveLock
- NSRegularExpression
- NSRunLoop
- NSScanner
- NSScriptClassDescription
- NSScriptCoercionHandler
- NSScriptCommand
- NSScriptCommandDescription
- NSScriptExecutionContext
- NSScriptKeyValueCoding
- NSScriptObjectSpecifiers
- NSScriptStandardSuiteCommands
- NSScriptSuiteRegistry
- NSSerializer
- NSSet
- NSSocketPort
- NSSocketPortNameServer
- NSSortDescriptor
- NSSpellServer
- NSStream
- NSString
- NSTask
- NSTextCheckingResult
- NSThread
- NSTimeZone
- NSTimeZoneDetail
- NSTimer
- NSURL
- NSURLAuthenticationChallenge
- NSURLCache
- NSURLComponents
- NSURLConnection
- NSURLCredential
- NSURLCredentialStorage
- NSURLDownload
- NSURLHandle
- NSURLProtectionSpace
- NSURLProtocol
- NSURLQueryItem
- NSURLRequest
- NSURLResponse
- NSURLSession
- NSURLSessionConfiguration
- NSURLSessionDataTask
- NSURLSessionDownloadTask
- NSURLSessionStreamTask
- NSURLSessionTask
- NSURLSessionUploadTask
- NSUUID
- NSUbiquitousKeyValueStore
- NSUnarchiver
- NSUndoManager
- NSUnit
- NSUnitAcceleration
- NSUnitAngle
- NSUnitArea
- NSUnitConcentrationMass
- NSUnitConverter
- NSUnitConverterLinear
- NSUnitDispersion
- NSUnitDuration
- NSUnitElectricCharge
- NSUnitElectricCurrent
- NSUnitElectricPotentialDifference
- NSUnitElectricResistance
- NSUnitEnergy
- NSUnitFrequency
- NSUnitFuelEfficiency
- NSUnitIlluminance
- NSUnitLength
- NSUnitMass
- NSUnitPower
- NSUnitPressure
- NSUnitSpeed
- NSUnitTemperature
- NSUnitVolume
- NSUserActivity
- NSUserDefaults
- NSUserNotification
- NSUserNotificationCenter
- NSUserScriptTask
- NSValue
- NSValueTransformer
- NSXMLDTD
- NSXMLDTDNode
- NSXMLDocument
- NSXMLElement
- NSXMLNode
- NSXMLParser
- NSXPCConnection
- NSXPCInterface
- NSXPCListener
- NSXPCListenerEndpoint
- NXConstantString

### Protocol

- <GSLogDelegate>
- <NSCacheDelegate>
- <NSCoding>
- <NSCopying>
- <NSDecimalNumberBehaviors>
- <NSDiscardableContent>
- <NSExtensionRequestHandling>
- <NSFastEnumeration>
- <NSFileManagerDelegate>
- <NSFilePresenter>
- <NSItemProviderReading>
- <NSItemProviderWriting>
- <NSLocking>
- <NSMetadataQueryDelegate>
- <NSMutableCopying>
- <NSNetServiceBrowserDelegate>
- <NSNetServiceDelegate>
- <NSObjCTypeSerializationCallBack>
- <NSObject>
- <NSProgressReporting>
- <NSSecureCoding>
- <NSStreamDelegate>
- <NSURLAuthenticationChallengeSender>
- <NSURLConnectionDataDelegate>
- <NSURLHandleClient>
- <NSURLProtocolClient>
- <NSURLSessionDataDelegate>
- <NSURLSessionDelegate>
- <NSURLSessionDownloadDelegate>
- <NSURLSessionTaskDelegate>
- <NSUserNotificationCenterDelegate>
- <NSXMLParserDelegate>
- <NSXPCListenerDelegate>
- <NSXPCProxyCreating>
- <RunLoopEvents>
- (GSTraceLocks)
- (NSComparisonMethods)
- (NSConnectionDelegate)
- (NSErrorRecoveryAttempting)
- (NSFileManagerDelegate)
- (NSFileManagerHandler)
- (NSFilePresenter)
- (NSKeyValueCoding)
- (NSMetadataQueryDelegate)
- (NSNetServiceBrowserDelegateMethods)
- (NSNetServiceDelegateMethods)
- (NSSpellServerDelegate)
- (NSStreamDelegate)
- (NSUserNotificationCenterDelegateMethods)
- (RunLoopEvents)
- (TimedPerformers)