Here's where you're mistaken. Only one *instance* is created: A
'TreeGroup' instance (which is a kind of TreeNode). The reason it's
only showing up in one place reliably is because the add: message is
being sent to *one* controller. Your other controller may not have
been informed that it needs
> I could need some help with a Core Data related problem I am experiencing,
> and I am not entirely sure I understand everything Cocoa does behind my back.
> In more detail :
It'd be best if you'd post specific questions regarding what you
believe and what you're unsure of. This is essential
Dear List.
I could need some help with a Core Data related problem I am experiencing, and
I am not entirely sure I understand everything Cocoa does behind my back. In
more detail :
I created a Core Data document based project from scratch. The Core Data model
consists of an abstract TreeNode e
