nil and objective-j
Posted On Monday, 17 November 2008 at at 19:55 by Rick WalshSuppose I have an object instance called person, which has an instance method called yelp.
To call this method, in objective-j, I code:
[person yelp];
In most languages if person is null (or in this case nil) calling yelp would result in an exception being thrown.
Not in objective-j. The method* yelp isnt called.
Thats just wierd.
*Note that method calls are referred to as messages in objective-j.
Posts
This is an advantage though -- you don't need to block every access with a nil check or risk your app breaking. If you actually want to do something with nil, you can still check for it.