Hi Elias,
you cannot define a niladic function with axis because you could not
call it.
There is no reduction pattern defined for that - not in ISO and not in
IBM APL2.
N[X] computes N and then indexes it with X and does not call N with axis X.
The other problem was a missing check for valid
I'm getting an error declaring a nihilic operator that has an index
parameter using ⎕FX:
* ⎕FX 'Z←(OP F)[V]' "OP V"*
1
When I declare it using the lambda format, the declaration works but trying
to call it gives an error. Trying to call it without the index parameter
(but with a normal param
