Question

After some research i found a piece of code which shows how to expand NSMutableArray functionality to use 2d arrays easily.

http://www.seattlexcoders.org/shared/Mutable%202D%20Array/

How would my declaration statement of this special NSMutableArray look like?

With the following

#import 'ZNMutable2DArray.h' @interface MainView : UIView {     ZNMutable2DArray *tiles; }  @property(nonatomic,retain) ZNMutable2DArray *tiles; 

It gives me the error ‘syntax error before ZNMutable2DArray..’

Thank you, Chris

Answer 1

ZNMutable2DArray is just a category on NSMutableArray, so you’d declare it as NSMutableArray *. There’s nothing special about it — the methods are available to all NSMutableArrays. What it does is it creates an NSMutableArray filled with NSMutableArrays, and those are your ‘rows.’