[Jprogramming] [Newbie question] Using # item by item and some other questions

[bill lam]

On Fri, 07 Aug 2009, Sherlock Ric wrote:
> Obviously the best solution is to prevent the 0 fills in the first place using one of the methods described. But if you really want to count the non-zero numbers in each row of an array, then you could do this:
>       q: 453 32
> 3 151 0 0 0
> 2   2 2 2 2
>    #@-.&0"1 q: 453 32
> 2 5
>
> countrows is an explicit verb that would do the same thing:
>    countrows=: 3 : '# y -. 0'"1
>    countrows q: 453 32
> 2 5

I guess the tacit form (ignoring "1) is #@-.&0 is interpreted as
(#@-.)&0 but the explicit form is #@:(-.&0)

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