Yes, performance is an issue as reported earlier
http://www.jsoftware.com/jwiki/System/Interpreter/Requests
for which, I hope, there is potential for improvement.
But you can't beat the notation.
If you can use one token why would you need three?
As shown in the above request, fetch ({::) is also
a great scatter indexer.
--- Brian Schott <[EMAIL PROTECTED]> wrote:
> Oleg has introduced the use of fetch in places that
> pick has been used traditionally. Does the following
> experiment capture a distinction?
>
> (B=) <----------my "sig"
>
> Brian Schott
> Atlanta, GA, USA
> schott DOT bee are eye eh en AT gee em ae eye el DOT com
> http://schott.selfip.net/~brian/
>
> ts =: (6!:2);(7!:2)@]
> y =: i. each;/ ?.500 2$3 10
> 4{.y
> +-----+---+-------------------------+-----------------+
> | |0 1|0 1 2 3 4 5 6 7 8|0 1 2 3 4 5 6|
> | |2 3|9 10 11 12 13 14 15 16 17|7 8 9 10 11 12 13|
> +-----+---+-------------------------+-----------------+
> x =: ?.500$500
> ts 'x pick y'
> +--------+-----+
> |0.002219|87296|
> +--------+-----+
> ts 'x {::"0 _ y'
> +----------+------+
> |0.00743826|391744|
> +----------+------+
> (x pick y)-:(x {::"0 _ y)
> 1
> ----------------------------------------------------------------------
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