I suppose the simplest explanation is that defining fact =: */ >: i. in effect puts parentheses around */ >: i. and
(*/ >: i.) 5 is different from */ >: i. 5 As others have explained, the first of these is interpreted as (*/ 5) >: (i. 5) and the second as */ (>: (i. 5)) You could have defined fact =: 3 : '*/ >: i. y' fact 5 120 or fact =: 13 : '*/ >: i. y' fact 5 120 fact [: */ [: >: i. Kip Murray Sent from my iPad On Nov 15, 2012, at 11:20 PM, Vijay Lulla <vijaylu...@gmail.com> wrote: > Please forgive me for asking a novice question. > > I tried > */>:i.5 NB. results in 120 > > But I define > fact=: */>:i. > fact 5 NB. results in 1 1 1 1 1 > > I remember reading about this somewhere but I cannot seem to find the > relevant pages now. Any pointers as to where I could find these documents > or a brief explanation (which can be easily remembered) will be very > helpful and is highly appreciated. > Thanks, > Vijay Lulla. > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm) ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
