David Ward Lambert wrote:
>NB. Write a function to number the rows of its argument.
>NB. Example: `a' is an n-dimensional numerical array.
>NB. I created this pretty length error: (i.*/}:$a),"0 _1 a
Not too bad, but your */ was overdoing it.
(i.}:$a) ,"0 1 a
gives you structured indexes which will then match one-on-one against
the rows.
I recommend to you to work through section II.B "Agreement" in the
Dictionary, walking through these cases each:
2 + 3
2 3 + 4 5
2 + 3 4 5
2 3 + (i. 2 2)
Note: there's no use of the rank conjunction here. You'll need to
understand basic agreement rules before you make them the target
of further "foo voodoo.
Martin
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