Matthias,
I buried myself in "The Ruby Programming Language" for a week and have not followed the forum. Ik will now study the code and give my comments / additions. Thank you for making this available.
Best regards,
Hans
Matthias,
I have contacted you earlier via email on a cross-section program that I already have. Unfortunately, there are copyright issues with sharing the code. Also, the approach that you propose using booleans is in principle much faster than th…