In the dark, colour is irrelevant.
Devon McCormick wrote:
If you want to consider an empty list to have all elements equal,
feel free to write your test that way. Maybe at night all cows are black.
I would argue for the correctness of the J interpretation: an empty
list has no members, so how can they all be equal? There's no basis
for comparison.
On 10/12/07, Ricardo Forno <[EMAIL PROTECTED]> wrote:
Thanks to all.
Now I see things more clearly.
Actually, my question was related to this Phrase, section test, 4C:
m11=: >./=<./ NB. Are atoms of numerical list y equal?
This works for lists having not null length.
However, for a null list, the result is 0, indicating that not all the
numbers were equal.
The question, then, boils to: is this last result right? I understand that
minus infinite is not equal to plus infinite; this is not the problem.
What I think is that there sholud be a simple phrase that, applied to a
null
lists, says all its elements are equal, because not two of them are
different.
Thanks.
...
--
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|\/| Randy A MacDonald | APL: If you can say it, it's done.. (ram)
|/\| ramacd <at> nbnet.nb.ca |
|\ | | The only real problem with APL is that
BSc(Math) UNBF'83 | it is "still ahead of its time."
Sapere Aude | - Morten Kromberg
Natural Born APL'er |
-----------------------------------------------------(INTP)----{ gnat }-
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