another approach that could be helpful
with respect to that question:
try removing that , and rearranging
)@{:)^:y
to become
)^:y)@{:
in the definition
what does it compute now?
Sierpinski =: {{ (((72#:~8#2){~3#.\0,],0:)^:y)@{: ,: 1 y} (>:+:y) $ 0 }}
' #'{~ Sierpinski"0 i.>:15
This gives a ragged version, each line is computed independently.
So why does (, f) y work?
try it for easily understood functions f, e.g. f=:+: and numeric y
then try (, f@{:) y
and then try both (, f)^:n y and (, f@{:)^:n y for some values n
reference:
(g f) → hook
f^:n → ^: ^:n is ^n for functions
Am 01.02.22 um 19:31 schrieb Andrew P:
what is (,?
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