As a newb I'd appreciate a word or two of explanation here. I mean, I can see that bracketing the arguments probably has something to do with the rank of $ - I've had this kind of issue before - but why do we have to use , (Ravel) between them?
I should also say that despite the thread of the title, what we have here is more like 'explicit' rather than 'tacit' confusion... I was unable to write the above even "mock-tacitly", i.e. using [ and ] xx =: (], [) $ ( 52 ? 52 ) NB. Don't work - syntax error Further, our old friend "13 : '....' " doesn't seem to help either. In fact, its suggestion of 4 : 'x y $ (52?52)' is downright wrong. On Mon, 2010-03-01 at 11:49 +0100, R.E. Boss wrote: > change := in =: > > xx =: 3 : 'y 2 $ ( 52 ? 52 )' > xx 5 > |syntax error: xx > | y 2$(52?52) > > then > > xx =: 3 : '(y, 2) $ ( 52 ? 52 )' > > xx 5 > 30 19 > 10 43 > 6 13 > 29 27 > 23 7 > > > R.E. Boss > > > > -----Oorspronkelijk bericht----- > > Van: [email protected] [mailto:programming- > > [email protected]] Namens Elmer Fittery > > Verzonden: maandag 1 maart 2010 11:36 > > Aan: [email protected] > > Onderwerp: [Jprogramming] tacit confusion > > > > > > 5 2 $ (52 ? 52) > > 37 17 > > 29 26 > > 18 41 > > 38 33 > > 31 28 > > > > xx := 3 : 'y 2 $ ( 52 ? 52 )' > > xx 5 > > |domain error: xx > > | xx 5 > > > > how do I get the 'y' value? > > how would I get the 'x' value? > > > > thanks > > > > > > > > > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
