a. I note that the desired result obtains from x #&.|. y and x #!.f&.|. y
1j2 3j4 5j6 #!.'.' 'abc' a..bbb....ccccc...... 1j2 3j4 5j6 #!.'.'&.|. 'abc' ..a....bbb......ccccc b. What happens if fills are wanted before _and_ after the copied items? ----- Original Message ----- From: Dan Bron <[email protected]> Date: Saturday, March 13, 2010 14:20 Subject: [Jprogramming] Request for enhancement to # To: 'Programming forum' <[email protected]> > In the recent Hofstadter-Conway thread, I used complex&# to > expand a vector. > However, the solution was slightly complicated (and slowed) by > the fact that > # only allows me to specify fills *after* an element. > > It would be nice if # were extended such that if the imaginary > component of > a complex argument were negative, then the fills would *precede* the > corresponding element in the output. That is, (m j. n)&# > works as it does > today if n is positive or zero, but if n is negative then the > fills come > before, not after. > > I've needed this before; see, e.g. the bottom of: > > http://www.jsoftware.com/pipermail/programming/2007- > January/004750.html ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
