({. -: 0&{) y
I believe this holds for any y, except if:
(0 = {.@$) y NB. the first dimension of y is empty
Then, according to the dictionary, this holds for any y whatsoever:
({. -: 0 { 1 {. ]) y
Louis
> On 22 Apr 2016, at 22:30, 'Pascal Jasmin' via Programming
> <[email protected]> wrote:
>
> (1 {. ]) is not the same as {.
>
> $ 1 {. i.3
>
> 1
>
> #@$ {. i.3
> 0
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
