I knew a bunch and couldn't remember one! A good story! Thanks, Linda
-----Original Message----- From: programming-boun...@jsoftware.com [mailto:programming-boun...@jsoftware.com] On Behalf Of Roger Hui Sent: Sunday, May 06, 2012 2:53 AM To: Programming forum Subject: Re: [Jprogramming] (no subject) You can do this the same as you do in APL, ''$,34. I remember discussing this with Fred Appleyard when I was a summer student in IPSA Calgary in 1975. I opined that you "can not make a scalar from a vector". He immediately showed me ''$,34, (,34)[0], +/,34, etc. On Sat, May 5, 2012 at 11:46 PM, Linda Alvord <lindaalv...@verizon.net>wrote: > J Vocabulary, Primer, Single atom array > > An array with a single atom is referred to as a singleton. All > singletons with the same atom display the same way. However, the fact > that they have different ranks affects how verbs act on them. This can > be a pitfall for beginners. It is important to remember that if it > displays like an atom, but does not behave like one, then check its > rank. > > Is there somewhere in the vocabulary where it mentions how to change a > single element list to an atom (shape 1 to shape empty) > > $34 > $,34 > 1 > #34 > 1 > #,34 > 1 > > Isn't the problem with shapes rather than rank? > > In any case, I have a mental lapse and can't seem to change ,34 to 34 . > > Thanks in advance. > > Linda > > ---------------------------------------------------------------------- > 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
