NSMutableArray changes to the copy causing changes in the parent NSMutableArray as well

Question

I have a NSMutableArray is my delegate that I am using in one of my view controllers as well.

So in viewDidLoad I make a mutable copy of my NSMutableArray like this

Answer 1

That's because the mutable copy of the array is referencing the same objects as mydelegate.array is referencing, so if you change one object property, it's changed in both arrays, as it's the same object.

You could implement NSCopying protocol in your objects and you can then call initWithArray:copyItems: NSArray method.

Hope that helps.