Function

CFStringCreateWithSubstring(_:_:_:)

Creates an immutable string from a segment (substring) of an existing string.

Declaration

func CFStringCreateWithSubstring(_ alloc: CFAllocator!, _ str: CFString!, _ range: CFRange) -> CFString!

Parameters

alloc

The allocator to use to allocate memory for the new string. Pass NULL or kCFAllocatorDefault to use the current default allocator.

str

The string from which to create the new string.

range

The range of characters in str to copy. The specified range must not exceed the length of the string.

Return Value

An immutable string, or NULL if there was a problem creating the object. Ownership follows the The Create Rule.

See Also

Creating a CFString

func CFStringCreateArrayBySeparatingStrings(CFAllocator!, CFString!, CFString!) -> CFArray!

Creates an array of CFString objects from a single CFString object.

func CFStringCreateByCombiningStrings(CFAllocator!, CFArray!, CFString!) -> CFString!

Creates a single string from the individual CFString objects that comprise the elements of an array.

func CFStringCreateWithBytes(CFAllocator!, UnsafePointer<UInt8>!, CFIndex, CFStringEncoding, Bool) -> CFString!

Creates a string from a buffer containing characters in a specified encoding.

func CFStringCreateWithBytesNoCopy(CFAllocator!, UnsafePointer<UInt8>!, CFIndex, CFStringEncoding, Bool, CFAllocator!) -> CFString!

Creates a string from a buffer, containing characters in a specified encoding, that might serve as the backing store for the new string.

func CFStringCreateWithCharactersNoCopy(CFAllocator!, UnsafePointer<UniChar>!, CFIndex, CFAllocator!) -> CFString!

Creates a string from a buffer of Unicode characters that might serve as the backing store for the object.

func CFStringCreateWithCStringNoCopy(CFAllocator!, UnsafePointer<Int8>!, CFStringEncoding, CFAllocator!) -> CFString!

Creates a CFString object from an external C string buffer that might serve as the backing store for the object.

func CFStringCreateWithFormatAndArguments(CFAllocator!, CFDictionary!, CFString!, CVaListPointer) -> CFString!

Creates an immutable string from a formatted string and a variable number of arguments (specified in a parameter of type va_list).

func CFStringCreateWithPascalStringNoCopy(CFAllocator!, ConstStr255Param!, CFStringEncoding, CFAllocator!) -> CFString!

Creates a CFString object from an external Pascal string buffer that might serve as the backing store for the object.

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.

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