Question

I have a project with ARC.

I have an NSArray whit some object inside.
At certain point I need to change the object in the array.

Whit a NSMutableArray I’ll do :

[array removeAllObjects];

and I’m sure that this method release all object contained in the array.
But with an NSArray I can’t do that! So, my question is: if I set array to nil and then re-initialize it, the old object contained in the array are really released from memory ?

array = nil;
array = [[NSArray alloc] initWithArray:newArray];

Or I need to use NSMutableArray ?

Answer 1

You can just do this:

array = newArray;

This will cause array to be released. When this NSArray gets deallocated, all contained objects will be released, too.