No, Geoff, the ~. applies before the rightmost /
Yet again, I suggest you look at the boxed or parenthesised
displays to see that
~.@,@:(+/)/
is broken down as
( (~.@,) (@:) (+/) ) /
so that Raul's (?) verb does use the nub for each intermediate sum.
Does that help?
Mike
Geoff Canyon wrote:
I was referring to this:
~.@,@:(+/)/ c
which (as far as I can see) doesn't -- yet still seems to function for
large arrays...
On Feb 6, 2008, at 4:27 AM, Raul Miller wrote:
On Feb 6, 2008 2:31 AM, Geoff Canyon <[EMAIL PROTECTED]> wrote:
Raul's solution doesn't seem to be doing intermediate nubs, and it
still works in about the same time and space, so I don't know what's
going on there.
Actually, my solution does the intermediate nubs, which are all
that's necessary.
f=:([: ~. [: , +/)/
f i.3 5
15 16 17 18 19 20 21 22 23 24 25 26 27
--
Raul
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