---Oleg Kobchenko wrote:
>
>    ts=: 1 : '] 1 : m'
>
>    '+/ % #' ts 1 2 3 4
> 2.5
>
>    1 2 3 4 '+&.:*:' ts 1 2 3 4
> 1.41421 2.82843 4.24264 5.65685
>
>     3 4 5 '(* ,: +)' ts 7 2 4
> 21 8 20
> 10 6  9

That form will be very useful. Thanks.
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