I have a need to associate objects with an arbitrary unsigned integer, which 
can be pretty much anything. I figured a dictionary with NSNumbers as keys 
would be perfect, where the NSNumber is created using 
+numberWithUnsignedInteger:

Trouble is, each time I create the number, it's a new object even if it 
contains a value NSNumber has seen before, so the lookup fails.

So, I thought I'd just create suitable static NSNumbers, but I have the same 
problem in another place, since I then need to know which static NSNumbers I've 
allocated already to a given integer, which means looking them up. While I 
could just add them to an array and conduct a linear search - for the current 
situation efficiency isn't likely to be an issue - this solution wouldn't scale 
very well if it ever needed to.

Is there an obvious alternative I'm overlooking?

--Graham


_______________________________________________

Cocoa-dev mailing list ([email protected])

Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com

Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com

This email sent to [email protected]

Reply via email to