Hi all !
Could we avoid doing these peculiar things in the rank operator if we
enabled the handling of arrays of nothing?
The verb injected in Rank would then have to give a valid result for an
array of nothing?
For this to happen J functions have to be defined for handling arrays of
nothing?
Would it be possible to define an algebra for the handling of arrays of
nothing?
Could this be the same as enabling missing data?
Cheers,
Erling
Den 2017-12-20 kl. 09:46, skrev Erling Hellenäs:
This is a mathematical concept:
https://en.wikipedia.org/wiki/Empty_product /Erling
Den 2017-12-20 kl. 09:39, skrev Erling Hellenäs:
*/i.0
1
Here the interpreter automatically adds a 1 to get this peculiar result.
/Erling
Den 2017-12-19 kl. 20:01, skrev Raul Miller:
An empty tank zero array would be inconsistent.
The number of elements in an array is the product of its dimensions,
and
the multiplicative identity is 1, not 0.
Thanks,
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
