🚀 go-pugleaf

Hi all,

I am running into some problems that are pretty general, but I'm not sure
how to solve them.  Basically they are like this:  A parent window (or other
generic object) has pointers-to several child windows (or other object).
When a child window is deconstructed (pathway 1), it has to call a function
foo() in the parent.  However, when the parent is deconstructed first, and
subsequenty calls the child's deconstructor (pathway 2), I don't want the
child's deconstructor calling the parent's foo() function, because this is
illegal (but it will compile) and definitely causes a crash.  I tried moving
the parent's function to ITS parent, but the same problem remains, just one
level higher.  I'm sure someone else has solved this problem.  Any ideas?
I'd like the child to know when NOT to call the parent function, i.e., the
child should know when the PARENT is in ITS deconsructor, or better yet,
some general solution to this problem.

thanks
ms