How can I check if an object in an NSArray is NSNull?

Question

I am getting an array with null value. Please check the structure of my array below:

 (
    \"< null>\"
 )

When I\'m trying to access

Answer 1

A lot of good and interesting answers have been given already and (nealry) all of them work.

Just for completion (and the fun of it):

[NSNull null] is documented to return a singleton. Therefore

if (ob == [NSNull null]) {...} 

works fine too.

However, as this is an exception I don't think that using == for comparing objects is a good idea in general. (If I'd review your code, I'd certainly comment on this).