Another approach, letting j define the tacit verb:
train =: 13 : ' (x#y) #: i. y^x'
train
# #: [: i. ^~
3 train 12
or
3 (# #: [: i. ^~) 12
At 14:15 -0500 2009/12/18, David Ward Lambert wrote:
>Kind helpful people;
>
>I evaluate
>
> 12 12 12 #: i. 12^3
>
>and observe that "12" is a common argument. Therefor this can be
>rewritten as a train. What, please, is the train? I suppose it could
>also be dyadic, as in
>
> 3(train)12
>
>Thanks,
>Dave.
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
