Framework
- Core Foundation
Overview
CFMutableCharacterSet manages dynamic character sets. The basic interface for managing character sets is provided by CFCharacterSet. CFMutableCharacterSet adds functions to modify the contents of a character set.
You create a mutable character set object using either the CFCharacter
or CFCharacter
function.
CFMutableCharacterSet is “toll-free bridged” with its Cocoa Foundation counterpart, NSMutable
. This means that the Core Foundation type is interchangeable in function or method calls with the bridged Foundation object. Therefore, in a method where you see an NSMutable
parameter, you can pass in a CFMutable
, and in a function where you see a CFMutable
parameter, you can pass in an NSMutableCharacterSet instance. This capability also applies to concrete subclasses of NSMutableCharacterSet. See Toll-Free Bridged Types for more information on toll-free bridging.