Can anyone point me to an example of automatically defined loops
that works with tree-based GP? Has anyone implemented loops in ECJ? I am
contemplating beginning to add this feature to my copy of ECJ and it
seems a bit daunting. Could the ADF stack be leveraged somehow to do
this? As an aside, it seems odd that iteration and recursion are not
more popular as a topic of discussion. I expect that I will really need
iteration, at least, in my project, and I would think that many people
would find it very valuable.

George Coles