perhaps this one
3 (<"1@(,.~i.@{.@$)+:@{`[`]} ])i. 4 5
or this one
3 +:@{`[`]}&.|: i. 4 5
On 19-09-13 18:02, Pascal Jasmin wrote:
6 (3}"1) i.4 5
0 1 2 6 4
5 6 7 6 9
10 11 12 6 14
15 16 17 6 19
+: (3}"1) i.4 5
6 16 26 36
I'd wish for the result to return the full row/table as the first amend. I'd
also like the code to the left of the amend to not know how many rows there
are. There is possibly a gerund approach I don't understand
I've read this page http://www.jsoftware.com/jwiki/JPhrases/MergeAmend
and it recommends making an unravelling adverb, and then applying a known shape
(ur 2_3) to select, but basically the general workaround approach that seems to
be recommended.
IR=: @(i.@$@])
new=. +: 3{"1 ] i.4 5 or to add rows 1 and 2 ((0&{+1&{))"1
sel=. 3&{"1 IR i.4 5
rows =. # i.4 5
then to do the update,
(rows , 5) $ new sel} , i.4 5
to avoid
(rows , 5) $ (+:@(3&{)"1 sel} ,) i. 4 5
4 5 $ (+:@(3&{)"1 sel} ,) i. 4 5
0 1 2 6 4
5 6 7 16 9
10 11 12 26 14
15 16 17 36 19
is there a gerund amend version that avoids the temp assignments? or other code
to get the same result?
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
--
Met vriendelijke groet,
@@i = Arie Groeneveld
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
