Posisbly the only virtue of this offering is that it's different from
Kenneth's!:
va =: - (|."0 1) 1 ,. 0 $~ 9 ,~ # NB. !!!
va 1 2 3
0 1 0 0 0 0 0 0 0 0
0 0 1 0 0 0 0 0 0 0
0 0 0 1 0 0 0 0 0 0
va 0 3 7
1 0 0 0 0 0 0 0 0 0
0 0 0 1 0 0 0 0 0 0
0 0 0 0 0 0 0 1 0 0
Mike
On 29/10/2018 18:03, Kenneth Lettow wrote:
Maybe something like this?
v=: (i.10)&e."_ 0
v 1 2 3
0 1 0 0 0 0 0 0 0 0
0 0 1 0 0 0 0 0 0 0
0 0 0 1 0 0 0 0 0 0
v 0 1 2
1 0 0 0 0 0 0 0 0 0
0 1 0 0 0 0 0 0 0 0
0 0 1 0 0 0 0 0 0 0
On Mon, Oct 29, 2018 at 1:57 PM, Lorenz Köhl <[email protected]> wrote:
Hi,
I need a verb to turn a list of numbers between zero and nine
into a table where each item is 10$0 except at the place indexed
by the input numbers, for example:
v 0 1 2
1 0 0 0 0 0 0 0 0 0
0 1 0 0 0 0 0 0 0 0
0 0 1 0 0 0 0 0 0 0
My approach using ammend leaves me puzzled:
v=:1&(]})&(10$0)
v 1 2 3
1 0 0 0 0 0 0 0 0 0
1 1 0 0 0 0 0 0 0 0
1 1 0 0 0 0 0 0 0 0
Here I have to bind two nouns (1 as x and 10$0 as y) to the verb
(]}) but maybe that doesn't do what I think it does? The rank of v
doesn't seem to matter, it gives the same output, but I know I want
it to use 0-cells of the input list.
I'd be happy to see what the idiomatic way to do this is, and maybe
how to fix my approach.
greetings,
Lorenz
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