On 12/02/2017 02:17 AM, Roger Hui wrote:
SC =: 3 : '(3 3$4>i.5) ,./^:2@(*/)^:y ,.1'
SC confuses me. I would have thought that
(3 3$4>i.5) (*/)^:y ,.1
The left operand of the power operator ^: is ,./^:2@(*/) .
Oh, I parsed it as
(3 3$4>i.5) (,./^:2) @ ((*/)^:y) ,.1
but it should be
(3 3$4>i.5) (,./^:2 @ */)^:y ,.1
is that right? I'm certainly not au courant in all the exceptions to
right-association.
Btw, does the cut function ;._3 have an inverse that could be used to
solve this problem?
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
