How many times you got to parse a backend response, and tested if a given value is != nil?. Well, as it turns out, many parsers (such as JSONKit) will parse ‘null’ values into an instance of NSNull. That might cause a crash… unless you write eeeverywhere… ‘!= nil && != [NSNull null]’.
So… a good idea would be to implement an NSDictionary extention, to do that. Right?.
The method would look like this:
id object = [self objectForKey:key];
if (object == [NSNull null])