On 05/05/2009, at 4:05 PM, Weydson Lima wrote:
When you add a NSNumber object, how can you quickly reference back
to it?
Let's say you want to find the index in the array of the object you
just
created. If you use indexOfObject:[NSNumber numberWithInt:7] that
wouldn't
work, right?
No it wouldn't, but for the much more obvious reason that
indexOfObject: takes a simple scalar integer as the index parameter.
Because a new pointer is being created...
I'm actually working with a NSDictionary which I am having
troubles referencing back to a key.
Well, what is the trouble? Wrapping integers in an NSNumber ought to
work, as would using a string key based on [NSString
stringWithFormat:@"%d", myInteger"];
If your index keys are continuous and unique, wouldn't an array be a
better fit? (Sparse indexes do fit OK with dictionaries though).
--Graham
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