NSArray arrayWithObjects: if nil is meant to mark array end, can I do …nil, nil]?

Question

If nil is meant to mark the end of parameters, then can I use:

[NSArray arrayWithObjects:obj1, obj2, nil, nil, nil];

as the first nil marks

Answer 1

When you put nil when creating NSArray, objects upto that nil get added. The nil and objects after that are ignored. Just to complete, you can't add nil to NSMutableArray also (say using addObject: method) and doing that will raise exception.

you can put [NSNull null]; though when creating NSArray.