I thought it did this already.
Henry Rich
Zsbán Ambrus wrote:
> Dear Jsoftware,
>
> Is there any chance that a future J version would optimize the monad
> u/\. for any verb u to make only linear number of calls to u instead
> of quadratic?
>
> I know this would break the case when u has side effects, but I still
> believe this would be a useful feature (if documented), for it would
> help in lots of cases but break only little code.
>
> As a model, for any verb u and noun y, (u/\. y) could be executed as
> if it was (>,(];~>@[u>@{...@])/<"_1 y).
>
> Ambrus
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