I wrote:
> When optimizing J, it's good to keep the "special code"
> list handy
I should've taken my own advice, because:
> nub =: ~.@:({. ~ _ , >./@:(i."1&' '))
Is (somewhat) slower than:
nub2 =: ~.@:({."1~ >./@:(i."1&' '))
which is supported by special code.
Still, I prefer the _ , ... formulation (i.e. directly request the rectangle
of the size you want, rather than requesting "take this much from every row",
which feels loopy).
-Dan
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