Re: $model->iter_next fix

[Bjarne Steinsbø <bosteins broadpark no>]

muppet,

Could you please put on your teacher's hat and explain something to use 
mere mortals?

Let me explain how I though this was woriking, and then you can point at 
the place where I lost track and dumped core.

GBoxed is DERIVABLE, but it's not DEEP_DERIVABLE, right?  In "perl 
language" this should be equivalent to

 @Any::Boxed::Type::ISA = ('Glib::Boxed');

By definition almost, or at least as long as you are playing by Glib's 
rules.

In GBoxed.xs, a boxed type is wrapped up in a BoxedInfo struct, so that 
a boxed type (from perl's point of view) can know it's own 
gtype/package_name.  There are also hashes being maintained in GBoxed.xs 
to facilitate lookup by gtype or by package name.

I could have understood the need for a recursive lookup routine if 
GBoxed was DEEP_DERIVABLE, especially in the presense of multiple 
inheritance, but Glib doesn't allow multiple inheritance, and any boxed 
type inherits directly from GBoxed.  So why not just look it up in the 
hash and leave it at that?

I guess the part I don't understand has something to do with the 
interplay of @ISA and the Glib inheritance...

Bjarne