Sometimes it seems like it would be nice to have a variation on fork where instead of (f g h) we get *f@[ g h@])
And, of course, we can do that manually. (Also, I forget the contexts where I have wanted to use this. Maybe I'll remember later. I also have a vague memory of someone else asking for something like this.) Anyways, it's fairly straightforward to implement, though perhaps a bit tough to read (since mostly we don't mess with this kind of thing): tine=: 1 :0 2 :('u@[ (',(5!:5<'u'),') v@]') ) (i.2 3) $ $tine , p:i.3 2 2 3 5 7 11 13 FYI, -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm