I like: real=:(]-:+) :: 0:
On Fri, Oct 8, 2010 at 4:22 PM, Dan Bron <j...@bron.us> wrote: > 0 = {:@+. is the obvious test. I'm sure there are more efficient methods > leveragng complex arithmetic. > > Note this is one of the phrases where the difference btwn @ and @: is > relevant, and the former is what we want, as opposed to the more common > latter. > > Check out load 'validat' (no e). Or open the script. > > > -Dan > > > Please excuse typos; composed on a handheld device. > > -----Original Message----- > From: Kip Murray <k...@math.uh.edu> > Sender: programming-boun...@jsoftware.com > Date: Fri, 08 Oct 2010 15:48:12 > To: <programming@jsoftware.com> > Reply-To: Programming forum <programming@jsoftware.com> > Subject: [Jprogramming] Real Array > > Is there a way to test whether an array is real, i.e., numeric and not > imaginary, without using 3!:0 ? Where are such tests found? --Kip Murray > ---------------------------------------------------------------------- > 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