In the Lab chapter 3 of 17, the lesson suggests that
a reason for using sparse arrays is that some arrays are too
big to create in dense format providing the following
example as too big, but no such problem seems to appear when
I use the online JUM version. Is that a feature of J7?
In Lab chapter 13 of 17 the following definition of
T is meant to produce "NB. T has non-sparse values of 0",
T=: 0 (<1;1)} S
but I believe that no such values are created by that amend.
Instead, I wonder of the following amend would be correct,
for example?
T=: 0 (<0;1)} S
--
(B=)
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