I may have a solution, as this suggests, but I am unable to use "under" here.
;/1([(1 0 2&|:)@|.(1 0 2&|:)@]) i.5 4 3 On Tue, May 30, 2017 at 7:00 AM, Brian Schott <schott.br...@gmail.com> wrote: > The following expression accomplishes my goal when the array on the right > (i. 5 4 3 here) needs to be rotated by 1, the leftmost 1. But I want that 1 > to be an argument, also. > > ;/(1|."_1]) &. (1 0 2&|:)i.5 4 3 > > But my attempts such as the following, produce errors. > Can you suggest a solution, preferably tacit? > > ;/1(([|."_1]) &. (1 0 2|:]))i.5 4 3 > |index error > | ;/1 (([|."_1])&.(1 0 2|:]))i.5 4 3 > > Thanks, > > > -- > (B=) > -- (B=) <-----my sig Brian Schott ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
