At 2001-08-31 09:27, Marcin 'Qrczak' Kowalczyk wrote:

...

How do I define functions that work on all tuples?

You can't, and this is unfortunate.

You can make your own 'tuples' using cons = (,) and nil = (). Then you can use multi-parameter classes to manipulate them. -- Ashley Yakeley, Seattle WA