Serialize an NSMutableArray with Objects inside

I have an NSMutableArray with a bunch of Points(it's a class defined by me) inside. And I want to serialize this NSMutableArray to save to my disk. If I implement in my class Point the NSCoding protocol is it possible to use NSKeyedArchiver directly in my NSMutableArray?

Just like this example:

NSMutableData *data = [NSMutableData new];
NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initForWriti开发者_JAVA技巧ngWithMutableData:data];
[archiver encodeObject:myArray forKey:@"array"];
[data writeToFile:filename attomically:YES];
[archiver release];
[data release];

Yes it is possible, quoting Apple documentation :

The NSArray class adopts the NSCopying, NSMutableCopying, and NSCoding protocols;

Note that if you're working with points, maybe you should use the Apple CGPoint structure, which comes with many handy utilities : CGPointFromString and NSStringFromCGPoint see Apple documentation for more information.

And also these others ones might interest you CGPointEqualToPoint, CGRectContainsPoint, CGRectIntersectsRect or CGRectContainsRect... see Apple documentation for more information