Dominic Steinitz wrote:
I've been trying to re-label nodes in a rose tree without re-inventing
wheels (although I'm beginning to wish I had). I've got as far as this
but haven't yet cracked the general case for Traversable.
Solution 1) Data.Tree is already an instance of Traversable. :)
Solution 1) Data.Tree is already an instance of Traversable. :)
Yes it's all there but I would have missed the fun of trying to do it
myself ;-) Plus the data structure I actually want to re-label isn't
quite a rose tree.
Solution 2) The key observation is that you the instances for rose
