Next: 2.4 arrayWithObjects
Up: 2 NSArray
Previous: 2.2 Comparison with Pure
As in the case of strings, NSArrays are immutable; you can't
change them after creation (this allows the GNUstep NSArray
code to use some optimisations which would be impossible otherwise).
If you need an array that you can modify, you can use a subclass
of NSArray, called NSMutableArray. This happens
quite often, so we'll discuss it in some details later on.