I believe it is x f/ y. I saw an example of APL2 back in the 1980s, and fell for this specific feature. I forget that it actually looks unnatural to J-only users, just as x f/\ looks unnnatural to me. ----------------------------------------------------------------------- |\/| Randy A MacDonald | you can't pay for it, |/\| [EMAIL PROTECTED] | even if you want to. BSc(Math) UNBF'83 Sapere Aude | APL: If you can say it, it's done.. Natural Born APL'er | Demo website: http://142.166.105.166/ ----------------------------------------------------(INTP)----{ gnat }-
----- Original Message ----- From: "Joey K Tuttle" <[EMAIL PROTECTED]> To: "Programming forum" <[email protected]> Sent: Friday, March 24, 2006 2:52 PM Subject: Re: [Jprogramming] Closest local minimums of data > I'm curious (and not an APL2 user), does APL2 really have > something similar to x f\ y ?? What is the syntax? > > - joey > > At 10:38 +0000 2006/24/3, Mike Day wrote: > >As you noted, John Randall's }: > }. is of interest. 2 >/\ ] is a > >natural J/APL2 way to do it, whereas }: > }. is the J > >form of an ancient APL1 idiom for first differences and the like, > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
