Sets the receiver's version number.
SDKs
- iOS 2.0+
- macOS 10.0+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
Framework
- Foundation
Declaration
+ (void)setVersion:(NSInteger)aVersion;
Parameters
aVersionThe version number for the receiver.
Discussion
The version number is helpful when instances of the class are to be archived and reused later. The default version is 0.
Special Considerations
The version number applies to NSArchiver/NSUnarchiver, but not to NSKeyed/NSKeyed. A keyed archiver does not encode class version numbers.