CoreFoundation

Strings and Text 11

Reference types for immutable and mutable text, attributed text, and the supporting buffers and options that govern string handling.

• Cl
  CFString

  An object that represents an immutable Unicode string.
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  CFMutableString

  An object that represents a Unicode string whose contents you can modify.
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  CFAttributedString

  An object that pairs an immutable string with attributes applied to ranges of its characters.
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  CFMutableAttributedString

  An object representing attributed text whose characters and attributes you can modify.
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  CFStringTokenizer

  An object that divides a string into tokens such as words and sentences.
• St
  CFStringInlineBuffer

  A structure that caches a string's characters for fast sequential access.
• St
  CFStringCompareFlags

  Options that control how strings are compared and searched.
• En
  CFStringBuiltInEncodings

  Constants that identify the string encodings built into Core Foundation.
• En
  CFStringEncodings

  Constants that identify additional string encodings supported by Core Foundation.
• En
  CFStringNormalizationForm

  @typedef CFStringNormalizationForm
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  CFStringTokenizerTokenType

  Token type

Collections 18

Immutable and mutable container types for storing values, along with the callback structures that customize their behavior.

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  CFArray

  @typedef CFArrayRef
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  CFMutableArray

  @typedef CFMutableArrayRef
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  CFBag

  An object that stores an immutable, unordered collection of values, allowing duplicates.
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  CFMutableBag

  An object that stores a mutable, unordered collection of values, allowing duplicates.
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  CFDictionary

  @typedef CFDictionaryRef
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  CFMutableDictionary

  @typedef CFMutableDictionaryRef
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  CFSet

  @typedef CFSetRef
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  CFMutableSet

  @typedef CFMutableSetRef
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  CFBinaryHeap

  @typedef CFBinaryHeapRef
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  CFTree

  @typedef CFTreeRef
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  CFArrayCallBacks

  A structure of callbacks that govern how an array retains, releases, and compares its values.
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  CFBagCallBacks

  A structure of callbacks that govern how a bag retains, releases, and compares its values.
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  CFDictionaryKeyCallBacks

  A structure of callbacks that govern how a dictionary retains, releases, and hashes its keys.
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  CFDictionaryValueCallBacks

  @typedef CFDictionaryValueCallBacks
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  CFSetCallBacks

  @typedef CFSetCallBacks
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  CFBinaryHeapCallBacks

  @typedef CFBinaryHeapCallBacks
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  CFBinaryHeapCompareContext

  A structure that supplies context to a binary heap's comparison callback.
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  CFTreeContext

  @typedef CFTreeContext

Binary Data 5

Types for raw byte buffers, bit vectors, and the search options used when scanning binary data.

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  CFData

  An object that stores an immutable buffer of raw bytes.
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  CFMutableData

  An object that stores a mutable buffer of raw bytes you can append to and modify.
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  CFBitVector

  An object that stores an immutable, ordered sequence of bits.
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  CFMutableBitVector

  An object that stores a mutable, ordered sequence of bits you can set and clear.
• St
  CFDataSearchFlagsiOS 4.0+

  Options that control how a byte range is searched within data.

Numbers and Boxed Values 10

Object wrappers for numeric, boolean, and null values, and the constants describing their representations.

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  CFNumber

  An object that wraps a numeric value of any C scalar type.
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  CFBoolean

  An object that wraps a Boolean value for storage in collections.
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  CFNull

  An object that represents a singleton null value for use in collections.
• En
  CFNumberType

  Constants that identify the C scalar type stored in a number object.
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  CFNumberFormatter

  An object that converts numbers to and from their localized textual representations.
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  CFNumberFormatterKey

  Constants identifying the configurable properties of a number formatter.
• En
  CFNumberFormatterStyle

  Constants that specify the predefined formatting styles for numbers.
• En
  CFNumberFormatterRoundingMode

  Constants that specify how a number formatter rounds values.
• En
  CFNumberFormatterPadPosition

  Constants that specify where a number formatter inserts padding characters.
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  CFNumberFormatterOptionFlags

  Options that control how a number formatter parses input.

Dates, Time, and Calendars 17

Types for representing points in time, calendars, time zones, locales, and the formatters that convert dates to text.

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  CFDate

  An object that represents a single point in time.
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  CFCalendar

  An object that performs calendrical calculations such as date components and ranges.
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  CFTimeZone

  An object that represents a time zone and its offset and daylight rules.
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  CFLocale

  An object that encapsulates conventions for formatting and interpreting region-specific data.
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  CFDateFormatter

  An object that converts dates to and from their textual representations.
• En
  CFDateFormatterStyle

  Constants that specify the predefined formatting styles for dates and times.
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  CFDateFormatterKey

  Constants identifying the configurable properties of a date formatter.
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  CFISO8601DateFormatOptions

  Options that control which components an ISO 8601 date formatter emits.
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  CFCalendarUnit

  Constants that identify calendrical units such as days, months, and years.
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  CFCalendarIdentifier

  A type that identifies a calendar system such as Gregorian or Hebrew.
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  CFGregorianDate

  A structure that represents a date and time in the Gregorian calendar.
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  CFGregorianUnits

  A structure that represents an amount of time as Gregorian calendar units.
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  CFGregorianUnitFlags

  Options that identify which Gregorian units a calculation should include.
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  CFLocaleIdentifier

  A type that identifies a locale by a canonical locale string.
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  CFLocaleKey

  Constants identifying the components of a locale's conventions.
• En
  CFLocaleLanguageDirection

  Constants that specify the writing direction of a language.
• En
  CFTimeZoneNameStyleiOS 2.0+

  Constants that specify the style used to present a time zone's name.

Character Sets 3

Immutable and mutable sets of Unicode characters and the predefined sets available for membership tests.

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  CFCharacterSet

  @typedef CFCharacterSetRef
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  CFMutableCharacterSet

  @typedef CFMutableCharacterSetRef
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  CFCharacterSetPredefinedSet

  @typedef CFCharacterSetPredefinedSet

Run Loop and Event Sources 11

The run loop and its input sources, observers, and timers that drive event processing on a thread.

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  CFRunLoop

  An object that processes input sources and timers dispatched to a thread.
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  CFRunLoopSource

  An object that represents an input source feeding events into a run loop.
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  CFRunLoopObserver

  An object that receives callbacks at specific stages of a run loop's execution.
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  CFRunLoopTimer

  An object that fires a callback at a scheduled time within a run loop.
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  CFRunLoopMode

  A type that names a mode in which a run loop operates.
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  CFRunLoopActivity

  Constants that identify the stages of a run loop reported to observers.
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  CFRunLoopRunResult

  Constants that indicate why a run loop finished running.
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  CFRunLoopSourceContext

  A structure that defines the callbacks and context for a version 0 run loop source.
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  CFRunLoopSourceContext1

  A structure that defines the callbacks and context for a version 1 run loop source.
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  CFRunLoopObserverContext

  A structure that supplies context to a run loop observer's callback.
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  CFRunLoopTimerContext

  A structure that supplies context to a run loop timer's callback.

Ports, Sockets, and Streams 19

Communication primitives for Mach and message ports, sockets, file descriptors, and read and write streams.

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  CFMachPort

  An object that wraps a Mach port as a run loop input source.
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  CFMessagePort

  An object that enables synchronous message passing between threads or processes.
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  CFSocket

  An object that wraps a BSD socket as a run loop input source.
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  CFFileDescriptor

  An object that monitors a file descriptor for read and write availability within a run loop.
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  CFReadStream

  An object that provides a stream of bytes for reading from a source.
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  CFWriteStream

  An object that provides a stream of bytes for writing to a destination.
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  CFMachPortContext

  A structure that supplies context to a Mach port's callback.
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  CFMessagePortContext

  A structure that supplies context to a message port's callback.
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  CFSocketSignature

  A structure that identifies a socket by its protocol family, type, and address.
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  CFSocketCallBackType

  Options that identify the socket activities that trigger a callback.
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  CFSocketContext

  A structure that supplies context to a socket's callback.
• En
  CFSocketError

  Constants that indicate the result of a socket operation.
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  CFFileDescriptorContext

  A structure that supplies context to a file descriptor's callback.
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  CFStreamError

  A structure that describes an error that occurred on a stream.
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  CFStreamPropertyKey

  Constants identifying configurable properties of a stream.
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  CFStreamEventType

  Options that identify the events a stream reports to its client.
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  CFStreamClientContext

  A structure that supplies context to a stream's client callback.
• En
  CFStreamStatus

  Constants that indicate the current status of a stream.
• En
  CFStreamErrorDomain

  Constants that identify the domain of an error reported by a stream.

URLs and Resources 9

Types for locating files and resources by URL, enumerating directory contents, and resolving bookmarks.

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  CFURL

  An object that represents the location of a local or remote resource.
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  CFURLEnumerator

  An object that enumerates the contents of a directory or a sequence of URLs.
• En
  CFURLPathStyle

  Constants that specify the path style used when interpreting a file system path.
• En
  CFURLComponentType

  Constants that identify the individual components of a URL.
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  CFURLError

  Constants that identify errors that occur during URL operations.
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  CFURLEnumeratorOptions

  Options that control how a URL enumerator traverses directory contents.
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  CFURLEnumeratorResult

  Constants that indicate the outcome of advancing a URL enumerator.
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  CFURLBookmarkCreationOptionsiOS 4.0+

  Options that control how a bookmark is created from a URL.
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  CFURLBookmarkResolutionOptionsiOS 4.0+

  Options that control how a bookmark is resolved back into a URL.

Bundles and Plug-ins 3

Types for locating bundled resources, loading executable code, and managing plug-in instances.

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  CFBundle

  An object that locates and loads code and resources stored in a bundle directory.
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  CFPlugIn

  An object that manages a bundle containing loadable executable code as a plug-in.
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  CFPlugInInstance

  An object that represents an instance of a type vended by a plug-in factory.

Property Lists 2

Formats and options governing the serialization and mutability of property list data.

• En
  CFPropertyListFormat

  Constants that specify the serialization format of a property list.
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  CFPropertyListMutabilityOptions

  Options that specify the mutability of objects created when reading a property list.

Notifications and User Interaction 4

Types for distributing notifications and presenting system alert dialogs to the user.

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  CFNotificationCenter

  An object that delivers notifications to registered observers within or across processes.
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  CFNotificationName

  A type that names a notification distributed by a notification center.
• En
  CFNotificationSuspensionBehavior

  Constants that specify how notifications are handled while an application is suspended.
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  CFUserNotification

  An object that presents a system alert dialog and reports the user's response.

Geometry 6

Value types for representing coordinates, dimensions, rectangles, and affine transformations.

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  CGPoint

  A structure that represents a location in a two-dimensional coordinate system.
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  CGSize

  A structure that represents a width and a height.
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  CGVector

  A structure that represents a change in position in two dimensions.
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  CGRect

  A structure that represents a rectangle as an origin point and a size.
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  CGAffineTransform

  A structure that represents an affine transformation matrix for two-dimensional coordinates.
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  CGAffineTransformComponents

  A structure that decomposes an affine transform into scale, rotation, shear, and translation.

Memory, Errors, and Identity 9

Foundational helper types for allocation, error reporting, file security, unique identifiers, and value comparison.

• Cl
  CFAllocator

  An object that allocates, reallocates, and deallocates memory for Core Foundation objects.
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  CFAllocatorContext

  A structure that defines the callbacks and context for a custom allocator.
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  CFError

  @typedef CFErrorRef
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  CFFileSecurity

  An object that encapsulates a file's ownership, permission, and access control information.
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  CFFileSecurityClearOptionsiOS 6.0+

  Options that specify which attributes to clear from a file security object.
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  CFUUID

  An object that represents a universally unique 128-bit identifier.
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  CFUUIDBytes

  A structure that holds the raw 16-byte value of a universally unique identifier.
• St
  CFRange

  A structure that represents a contiguous range as a location and length.
• En
  CFComparisonResult

  Constants that indicate whether a value is ordered before, equal to, or after another.

Byte Order 3

Types describing endianness and the byte-swapped representations of floating-point values.

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  __CFByteOrder

  A type that identifies a platform's byte order as big-endian, little-endian, or unknown.
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  CFSwappedFloat32

  A structure that holds a byte-swapped 32-bit floating-point value.
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  CFSwappedFloat64

  A structure that holds a byte-swapped 64-bit floating-point value.

Structures 1

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  CGFloatiOS 2.0+

Enumerations 1

• En
  CGRectEdge

Type Aliases 70

• Ty
  CFArrayRetainCallBack

  @typedef CFArrayCallBacks
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  CFArrayReleaseCallBack
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  CFArrayCopyDescriptionCallBack
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  CFArrayEqualCallBack
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  CFArrayApplierFunction

  @typedef CFArrayApplierFunction
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  CFBagRetainCallBack
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  CFBagReleaseCallBack
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  CFBagCopyDescriptionCallBack
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  CFBagEqualCallBack
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  CFBagHashCallBack
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  CFBagApplierFunction
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  CFAllocatorTypeID
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  CFTypeID
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  CFOptionFlags
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  CFHashCode
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  CFIndex

Extends 12