You are right, it doesn't allow trains when v is a verb.
Henry Rich
On 12/6/2019 9:54 PM, ethiejiesa via Programming wrote:
Am I just doing something silly? Or does @. really not support building trains
when the right operand is a verb? Here is an overly minimal example of what I
want:
(1:)`+`(1:)@.(0 1 2) 0
2
(1:)`+`(1:)@.(0 1 2"_) 0
|rank error
| (1:)`+`(1:)@.(0 1 2"_)0
This is an obvious enough feature, that I feel I must be missing some obvious
construction.
For context, I was futzing around with this year's Advent of Code[0], day 2,
and found myself wanting a fork-like that behaves as
x (u v w) y <-> (x u y) (x v y) (x w y).
After sufficient floundering, I decided to just read NuVoc for all modifiers
and discovered that I had somehow not noticed the usefulness of @. However, the
above restriction really surprised me.
Anyway, happy holidays, J birds.
[0]:https://adventofcode.com/2019/
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