Question

Does the release, recursively releases all inner objects? or must it be done manualy?

Can I do just this?

NSMutableArray *list = [[NSArray alloc] init];
// ...
// fill list with elements
//...
[list release];

Or must I release all inner objects one by one before releasing the NSMutableArray? // Suposing there isn’t any other reference to the contained objects, except on the list itself.

Answer 1

Yes it does. It retains them when added, and releases them when dealloc’d. This is actually one of the most common questions I see here.