Question

I know that when we add an object obj into a NSMutableArray, it takes the co_ownership of that object. So we can release the object obj just after adding that into the NSMutableArray. And when we release the NSMutableArray, it also calls the release of all the objects in it. So there is no memory leak and every thing is fine.

My doubt is if do like

NSMutableArray myArray = [[NMutableArray alloc] init];
[myArray addObject:[MyClass alloc] init]];
[myArray release];

Will this Cause any memory leak in our program?

Answer 1

Put autorelease for your MyClass. That should fix any memory leaks

NSMutableArray myArray = [[NMutableArray alloc] init];
[myArray addObject:[[[MyClass alloc] init] autorelease];
[myArray release];