Question

I have this classA that has a method in it, that is being called from another classB to get the coordinates of a sprite.

when i call that method in the classA, it returns NSMutablearray, but then i want to release that array.
so if i release classA, is that ok? all the allocated array in it are being releaseD ? NO..
or should i release the array in the dealloc of the called classA ?

gameHandler.m
-(NSMutableArray*)stand2_Co
{
...
return myArray
}

and then call it from another class :

theLevel=[[gameHandler alloc] init];
..
..
int theNumber = [   [ [theLevel stand2_Co] objectAtIndex:0] integerValue];

[theLevel release];

if i release the gameHandler , i need to also release that array ?
if so, when should i do that ?

thanks a lot .

Answer 1

• You own any object you create

You create an object using a method whose name begins with “alloc”,
“new”, “copy”, or “mutableCopy” (for example, alloc, newObject, or
mutableCopy).

• When you no longer need it, you must relinquish ownership of an
  object you own

You relinquish ownership of an object by sending it a release message
or an autorelease message. In Cocoa terminology, relinquishing
ownership of an object is therefore typically referred to as
“releasing” an object.

• You must not relinquish ownership of an object you do not own

This is just corollary of the previous policy rules, stated
explicitly.

Memory Management Programming Guide