[Haskell-cafe] typeclass and functional dependency problem

I'm writing a Gtk2hs app, and I have several custom widgets that are composite objects represented by records, one field of which is a container widget. I am trying to write a replacement for gtk2hs's boxPackStart boxPackStart :: (BoxClass self, WidgetClass child) = self - child - Packing - Int -

Re: [Haskell-cafe] typeclass and functional dependency problem

From: Martin DeMello martindeme...@gmail.com Subject: [Haskell-cafe] typeclass and functional dependency problem I'm writing a Gtk2hs app, and I have several custom widgets that are composite objects represented by records, one field of which is a container widget. I am trying to write