There was (I think) a very neat solution APL published in the Quote-Quad in the late 1970s - early 1980s. It was a very short one-liner involving */\ and +/\ . I'll see if I can find it or reproduce it.
Perhaps Joey Tuttle (the keeper of all things) would have a copy of it. I am pretty sure it would be in one of the IPSA utility workspaces, such as 880 sauce. The function would be called "accum" or some such. ----- Original Message ----- From: Bill Harris <[email protected]> Date: Saturday, July 18, 2009 8:20 Subject: Re: [Jprogramming] Accumulation, interest, and simulation To: Programming forum <[email protected]> > Thanks, all. I figured \. came into it somehow, but I > didn't get from > there to the end. I'll study your solutions later today. > > Bill > > PS: Thanks for not being misled by my typo in the original Aprime > example, which didn't include the second deposit in the rolling sum. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
