Inherits from | |
Conforms to | |
Framework | /System/Library/Frameworks/Foundation.framework |
Availability | Available in Mac OS X v10.0 and later. |
Companion guide | |
Declared in | NSNull.h |
Related sample code |
The NSNull
class defines a singleton object used to represent null values in collection objects (which don’t allow nil
values).
Returns the singleton instance of NSNull
.
+ (NSNull *)null
The singleton instance of NSNull
.
NSNull.h
© 2006 Apple Computer, Inc. All Rights Reserved. (Last updated: 2006-05-23)