Having been doing elementary level development on Pentium PCs for a few years, I had finally felt compelled to get a Mac without investing much on it in a PC World.

The more I looked into and got involved in the Mac world, however, last year I ended up with a MacBook Pro, and doing development both on the Mac OS and the .NET platform on the same notebook, today.

@property(read, retain) NSString carMaker;

somewhere in the main program you need to do this.

NSString* carMaker = [car carMaker];
…
[carMaker release];

From what I understand the ‘retain’ attribute will generate code that will call retain on the returned variable from carMaker.

However, if I change the property attribute to readonly, would this affect the calling code? eg. a simple return would be made without the retain being called.

It doesn’t, unfortunately, include the iPhone SDK libraries as those are propietary and until recently have been very restricted in terms of sharing information openly with other programmers about them.